starting with zmq and flatbuffers

build.gradle

@@ -32,8 +32,10 @@ dependencies {
     compile 'com.github.davidb:metrics-influxdb:0.8.2'
     compile 'com.github.davidb:metrics-influxdb:0.8.2'
     compile 'io.dropwizard.metrics:metrics-graphite:3.1.2'
     compile 'io.dropwizard.metrics:metrics-graphite:3.1.2'
     compile 'io.jsonwebtoken:jjwt:0.6.0'
     compile 'io.jsonwebtoken:jjwt:0.6.0'
+    compile group: 'org.zeromq', name: 'jeromq', version: '0.4.0'
 
 
     testCompile group: 'junit', name: 'junit', version: '4.11'
     testCompile group: 'junit', name: 'junit', version: '4.11'
+    testCompile group: 'org.zeromq', name: 'jeromq', version: '0.4.0'
 }
 }
 
 
 //1. use this install task (under "other" section) to create this jar localy on your machine.
 //1. use this install task (under "other" section) to create this jar localy on your machine.

schema/RestMsg.fbs

+namespace common.context;
+
+enum CrudMethod:byte { Create = 0, Read, Update, Delete }
+
+table RestMsg {
+  rcid:ulong;
+  source:string;
+  crudMethod:CrudMethod = Read;
+  url:string;
+  queryString:string;
+  content:string;
+}
+
+root_type RestMsg;

schema/RestResponse.fbs

+namespace common.context;
+
+
+table RestResponse {
+  rcid:ulong;
+  response:string;
+}
+
+root_type RestResponse;

src/main/java/com/google/flatbuffers/Constants.java

+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.flatbuffers;
+
+/// @cond FLATBUFFERS_INTERNAL
+
+/**
+ * Class that holds shared constants
+ */
+public class Constants {
+    // Java doesn't seem to have these.
+    /** The number of bytes in an `byte`. */
+    static final int SIZEOF_BYTE = 1;
+    /** The number of bytes in a `short`. */
+    static final int SIZEOF_SHORT = 2;
+    /** The number of bytes in an `int`. */
+    static final int SIZEOF_INT = 4;
+    /** The number of bytes in an `float`. */
+    static final int SIZEOF_FLOAT = 4;
+    /** The number of bytes in an `long`. */
+    static final int SIZEOF_LONG = 8;
+    /** The number of bytes in an `double`. */
+    static final int SIZEOF_DOUBLE = 8;
+    /** The number of bytes in a file identifier. */
+    static final int FILE_IDENTIFIER_LENGTH = 4;
+}
+
+/// @endcond

src/main/java/com/google/flatbuffers/FlatBufferBuilder.java

+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.flatbuffers;
+
+import static com.google.flatbuffers.Constants.*;
+
+import java.nio.CharBuffer;
+import java.nio.charset.CharacterCodingException;
+import java.nio.charset.CharsetEncoder;
+import java.nio.charset.CoderResult;
+import java.util.Arrays;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.charset.Charset;
+
+/// @file
+/// @addtogroup flatbuffers_java_api
+/// @{
+
+/**
+ * Class that helps you build a FlatBuffer.  See the section
+ * "Use in Java/C#" in the main FlatBuffers documentation.
+ */
+public class FlatBufferBuilder {
+    /// @cond FLATBUFFERS_INTERNAL
+    ByteBuffer bb;                  // Where we construct the FlatBuffer.
+    int space;                      // Remaining space in the ByteBuffer.
+    static final Charset utf8charset = Charset.forName("UTF-8"); // The UTF-8 character set used by FlatBuffers.
+    int minalign = 1;               // Minimum alignment encountered so far.
+    int[] vtable = null;            // The vtable for the current table.
+    int vtable_in_use = 0;          // The amount of fields we're actually using.
+    boolean nested = false;         // Whether we are currently serializing a table.
+    boolean finished = false;       // Whether the buffer is finished.
+    int object_start;               // Starting offset of the current struct/table.
+    int[] vtables = new int[16];    // List of offsets of all vtables.
+    int num_vtables = 0;            // Number of entries in `vtables` in use.
+    int vector_num_elems = 0;       // For the current vector being built.
+    boolean force_defaults = false; // False omits default values from the serialized data.
+    CharsetEncoder encoder = utf8charset.newEncoder();
+    ByteBuffer dst;
+    /// @endcond
+
+   /**
+    * Start with a buffer of size `initial_size`, then grow as required.
+    *
+    * @param initial_size The initial size of the internal buffer to use.
+    */
+    public FlatBufferBuilder(int initial_size) {
+        if (initial_size <= 0) initial_size = 1;
+        space = initial_size;
+        bb = newByteBuffer(initial_size);
+    }
+
+   /**
+    * Start with a buffer of 1KiB, then grow as required.
+    */
+    public FlatBufferBuilder() {
+        this(1024);
+    }
+
+    /**
+     * Alternative constructor allowing reuse of {@link ByteBuffer}s.  The builder
+     * can still grow the buffer as necessary.  User classes should make sure
+     * to call {@link #dataBuffer()} to obtain the resulting encoded message.
+     *
+     * @param existing_bb The byte buffer to reuse.
+     */
+    public FlatBufferBuilder(ByteBuffer existing_bb) {
+        init(existing_bb);
+    }
+
+    /**
+     * Alternative initializer that allows reusing this object on an existing
+     * `ByteBuffer`. This method resets the builder's internal state, but keeps
+     * objects that have been allocated for temporary storage.
+     *
+     * @param existing_bb The byte buffer to reuse.
+     * @return Returns `this`.
+     */
+    public FlatBufferBuilder init(ByteBuffer existing_bb){
+        bb = existing_bb;
+        bb.clear();
+        bb.order(ByteOrder.LITTLE_ENDIAN);
+        minalign = 1;
+        space = bb.capacity();
+        vtable_in_use = 0;
+        nested = false;
+        finished = false;
+        object_start = 0;
+        num_vtables = 0;
+        vector_num_elems = 0;
+        return this;
+    }
+
+    /// @cond FLATBUFFERS_INTERNAL
+    /**
+     * Create a `ByteBuffer` with a given capacity.
+     *
+     * @param capacity The size of the `ByteBuffer` to allocate.
+     * @return Returns the new `ByteBuffer` that was allocated.
+     */
+    static ByteBuffer newByteBuffer(int capacity) {
+        ByteBuffer newbb = ByteBuffer.allocate(capacity);
+        newbb.order(ByteOrder.LITTLE_ENDIAN);
+        return newbb;
+    }
+
+    /**
+     * Doubles the size of the backing {@link ByteBuffer} and copies the old data towards the
+     * end of the new buffer (since we build the buffer backwards).
+     *
+     * @param bb The current buffer with the existing data.
+     * @return A new byte buffer with the old data copied copied to it.  The data is
+     * located at the end of the buffer.
+     */
+    static ByteBuffer growByteBuffer(ByteBuffer bb) {
+        int old_buf_size = bb.capacity();
+        if ((old_buf_size & 0xC0000000) != 0)  // Ensure we don't grow beyond what fits in an int.
+            throw new AssertionError("FlatBuffers: cannot grow buffer beyond 2 gigabytes.");
+        int new_buf_size = old_buf_size << 1;
+        bb.position(0);
+        ByteBuffer nbb = newByteBuffer(new_buf_size);
+        nbb.position(new_buf_size - old_buf_size);
+        nbb.put(bb);
+        return nbb;
+    }
+
+   /**
+    * Offset relative to the end of the buffer.
+    *
+    * @return Offset relative to the end of the buffer.
+    */
+    public int offset() {
+        return bb.capacity() - space;
+    }
+
+   /**
+    * Add zero valued bytes to prepare a new entry to be added.
+    *
+    * @param byte_size Number of bytes to add.
+    */
+    public void pad(int byte_size) {
+        for (int i = 0; i < byte_size; i++) bb.put(--space, (byte)0);
+    }
+
+   /**
+    * Prepare to write an element of `size` after `additional_bytes`
+    * have been written, e.g. if you write a string, you need to align such
+    * the int length field is aligned to {@link Constants#SIZEOF_INT}, and
+    * the string data follows it directly.  If all you need to do is alignment, `additional_bytes`
+    * will be 0.
+    *
+    * @param size This is the of the new element to write.
+    * @param additional_bytes The padding size.
+    */
+    public void prep(int size, int additional_bytes) {
+        // Track the biggest thing we've ever aligned to.
+        if (size > minalign) minalign = size;
+        // Find the amount of alignment needed such that `size` is properly
+        // aligned after `additional_bytes`
+        int align_size = ((~(bb.capacity() - space + additional_bytes)) + 1) & (size - 1);
+        // Reallocate the buffer if needed.
+        while (space < align_size + size + additional_bytes) {
+            int old_buf_size = bb.capacity();
+            bb = growByteBuffer(bb);
+            space += bb.capacity() - old_buf_size;
+        }
+        pad(align_size);
+    }
+
+    /**
+     * Add a `boolean` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x A `boolean` to put into the buffer.
+     */
+    public void putBoolean(boolean x) { bb.put      (space -= Constants.SIZEOF_BYTE, (byte)(x ? 1 : 0)); }
+
+    /**
+     * Add a `byte` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x A `byte` to put into the buffer.
+     */
+    public void putByte   (byte    x) { bb.put      (space -= Constants.SIZEOF_BYTE, x); }
+
+    /**
+     * Add a `short` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x A `short` to put into the buffer.
+     */
+    public void putShort  (short   x) { bb.putShort (space -= Constants.SIZEOF_SHORT, x); }
+
+    /**
+     * Add an `int` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x An `int` to put into the buffer.
+     */
+    public void putInt    (int     x) { bb.putInt   (space -= Constants.SIZEOF_INT, x); }
+
+    /**
+     * Add a `long` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x A `long` to put into the buffer.
+     */
+    public void putLong   (long    x) { bb.putLong  (space -= Constants.SIZEOF_LONG, x); }
+
+    /**
+     * Add a `float` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x A `float` to put into the buffer.
+     */
+    public void putFloat  (float   x) { bb.putFloat (space -= Constants.SIZEOF_FLOAT, x); }
+
+    /**
+     * Add a `double` to the buffer, backwards from the current location. Doesn't align nor
+     * check for space.
+     *
+     * @param x A `double` to put into the buffer.
+     */
+    public void putDouble (double  x) { bb.putDouble(space -= Constants.SIZEOF_DOUBLE, x); }
+    /// @endcond
+
+    /**
+     * Add a `boolean` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x A `boolean` to put into the buffer.
+     */
+    public void addBoolean(boolean x) { prep(Constants.SIZEOF_BYTE, 0); putBoolean(x); }
+
+    /**
+     * Add a `byte` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x A `byte` to put into the buffer.
+     */
+    public void addByte   (byte    x) { prep(Constants.SIZEOF_BYTE, 0); putByte   (x); }
+
+    /**
+     * Add a `short` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x A `short` to put into the buffer.
+     */
+    public void addShort  (short   x) { prep(Constants.SIZEOF_SHORT, 0); putShort  (x); }
+
+    /**
+     * Add an `int` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x An `int` to put into the buffer.
+     */
+    public void addInt    (int     x) { prep(Constants.SIZEOF_INT, 0); putInt    (x); }
+
+    /**
+     * Add a `long` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x A `long` to put into the buffer.
+     */
+    public void addLong   (long    x) { prep(Constants.SIZEOF_LONG, 0); putLong   (x); }
+
+    /**
+     * Add a `float` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x A `float` to put into the buffer.
+     */
+    public void addFloat  (float   x) { prep(Constants.SIZEOF_FLOAT, 0); putFloat  (x); }
+
+    /**
+     * Add a `double` to the buffer, properly aligned, and grows the buffer (if necessary).
+     *
+     * @param x A `double` to put into the buffer.
+     */
+    public void addDouble (double  x) { prep(Constants.SIZEOF_DOUBLE, 0); putDouble (x); }
+
+   /**
+    * Adds on offset, relative to where it will be written.
+    *
+    * @param off The offset to add.
+    */
+    public void addOffset(int off) {
+        prep(SIZEOF_INT, 0);  // Ensure alignment is already done.
+        assert off <= offset();
+        off = offset() - off + SIZEOF_INT;
+        putInt(off);
+    }
+
+   /// @cond FLATBUFFERS_INTERNAL
+   /**
+    * Start a new array/vector of objects.  Users usually will not call
+    * this directly.  The `FlatBuffers` compiler will create a start/end
+    * method for vector types in generated code.
+    * <p>
+    * The expected sequence of calls is:
+    * <ol>
+    * <li>Start the array using this method.</li>
+    * <li>Call {@link #addOffset(int)} `num_elems` number of times to set
+    * the offset of each element in the array.</li>
+    * <li>Call {@link #endVector()} to retrieve the offset of the array.</li>
+    * </ol>
+    * <p>
+    * For example, to create an array of strings, do:
+    * <pre>{@code
+    * // Need 10 strings
+    * FlatBufferBuilder builder = new FlatBufferBuilder(existingBuffer);
+    * int[] offsets = new int[10];
+    *
+    * for (int i = 0; i < 10; i++) {
+    *   offsets[i] = fbb.createString(" " + i);
+    * }
+    *
+    * // Have the strings in the buffer, but don't have a vector.
+    * // Add a vector that references the newly created strings:
+    * builder.startVector(4, offsets.length, 4);
+    *
+    * // Add each string to the newly created vector
+    * // The strings are added in reverse order since the buffer
+    * // is filled in back to front
+    * for (int i = offsets.length - 1; i >= 0; i--) {
+    *   builder.addOffset(offsets[i]);
+    * }
+    *
+    * // Finish off the vector
+    * int offsetOfTheVector = fbb.endVector();
+    * }</pre>
+    *
+    * @param elem_size The size of each element in the array.
+    * @param num_elems The number of elements in the array.
+    * @param alignment The alignment of the array.
+    */
+    public void startVector(int elem_size, int num_elems, int alignment) {
+        notNested();
+        vector_num_elems = num_elems;
+        prep(SIZEOF_INT, elem_size * num_elems);
+        prep(alignment, elem_size * num_elems); // Just in case alignment > int.
+        nested = true;
+    }
+
+   /**
+    * Finish off the creation of an array and all its elements.  The array
+    * must be created with {@link #startVector(int, int, int)}.
+    *
+    * @return The offset at which the newly created array starts.
+    * @see #startVector(int, int, int)
+    */
+    public int endVector() {
+        if (!nested)
+            throw new AssertionError("FlatBuffers: endVector called without startVector");
+        nested = false;
+        putInt(vector_num_elems);
+        return offset();
+    }
+    /// @endcond
+
+    /**
+     * Create a new array/vector and return a ByteBuffer to be filled later.
+     * Call {@link #endVector} after this method to get an offset to the beginning
+     * of vector.
+     *
+     * @param elem_size the size of each element in bytes.
+     * @param num_elems number of elements in the vector.
+     * @param alignment byte alignment.
+     * @return ByteBuffer with position and limit set to the space allocated for the array.
+     */
+    public ByteBuffer createUnintializedVector(int elem_size, int num_elems, int alignment) {
+        int length = elem_size * num_elems;
+        startVector(elem_size, num_elems, alignment);
+
+        bb.position(space -= length);
+
+        // Slice and limit the copy vector to point to the 'array'
+        ByteBuffer copy = bb.slice().order(ByteOrder.LITTLE_ENDIAN);
+        copy.limit(length);
+        return copy;
+    }
+
+   /**
+     * Create a vector of tables.
+     *
+     * @param offsets Offsets of the tables.
+     * @return Returns offset of the vector.
+     */
+    public int createVectorOfTables(int[] offsets) {
+        notNested();
+        startVector(Constants.SIZEOF_INT, offsets.length, Constants.SIZEOF_INT);
+        for(int i = offsets.length - 1; i >= 0; i--) addOffset(offsets[i]);
+        return endVector();
+    }
+
+    /**
+     * Create a vector of sorted by the key tables.
+     *
+     * @param obj Instance of the table subclass.
+     * @param offsets Offsets of the tables.
+     * @return Returns offset of the sorted vector.
+     */
+    public <T extends Table> int createSortedVectorOfTables(T obj, int[] offsets) {
+        obj.sortTables(offsets, bb);
+        return createVectorOfTables(offsets);
+    }
+	
+   /**
+    * Encode the string `s` in the buffer using UTF-8.  If {@code s} is
+    * already a {@link CharBuffer}, this method is allocation free.
+    *
+    * @param s The string to encode.
+    * @return The offset in the buffer where the encoded string starts.
+    */
+    public int createString(CharSequence s) {
+        int length = s.length();
+        int estimatedDstCapacity = (int) (length * encoder.maxBytesPerChar());
+        if (dst == null || dst.capacity() < estimatedDstCapacity) {
+            dst = ByteBuffer.allocate(Math.max(128, estimatedDstCapacity));
+        }
+
+        dst.clear();
+
+        CharBuffer src = s instanceof CharBuffer ? (CharBuffer) s :
+            CharBuffer.wrap(s);
+        CoderResult result = encoder.encode(src, dst, true);
+        if (result.isError()) {
+            try {
+                result.throwException();
+            } catch (CharacterCodingException x) {
+                throw new Error(x);
+            }
+        }
+
+        dst.flip();
+        return createString(dst);
+    }
+
+   /**
+    * Create a string in the buffer from an already encoded UTF-8 string in a ByteBuffer.
+    *
+    * @param s An already encoded UTF-8 string as a `ByteBuffer`.
+    * @return The offset in the buffer where the encoded string starts.
+    */
+    public int createString(ByteBuffer s) {
+        int length = s.remaining();
+        addByte((byte)0);
+        startVector(1, length, 1);
+        bb.position(space -= length);
+        bb.put(s);
+        return endVector();
+    }
+
+    /**
+     * Create a byte array in the buffer.
+     *
+     * @param arr A source array with data
+     * @return The offset in the buffer where the encoded array starts.
+     */
+    public int createByteVector(byte[] arr) {
+        int length = arr.length;
+        startVector(1, length, 1);
+        bb.position(space -= length);
+        bb.put(arr);
+        return endVector();
+    }
+
+   /// @cond FLATBUFFERS_INTERNAL
+   /**
+    * Should not be accessing the final buffer before it is finished.
+    */
+    public void finished() {
+        if (!finished)
+            throw new AssertionError(
+                "FlatBuffers: you can only access the serialized buffer after it has been" +
+                " finished by FlatBufferBuilder.finish().");
+    }
+
+   /**
+    * Should not be creating any other object, string or vector
+    * while an object is being constructed.
+    */
+    public void notNested() {
+        if (nested)
+            throw new AssertionError("FlatBuffers: object serialization must not be nested.");
+    }
+
+   /**
+    * Structures are always stored inline, they need to be created right
+    * where they're used.  You'll get this assertion failure if you
+    * created it elsewhere.
+    *
+    * @param obj The offset of the created object.
+    */
+    public void Nested(int obj) {
+        if (obj != offset())
+            throw new AssertionError("FlatBuffers: struct must be serialized inline.");
+    }
+
+   /**
+    * Start encoding a new object in the buffer.  Users will not usually need to
+    * call this directly. The `FlatBuffers` compiler will generate helper methods
+    * that call this method internally.
+    * <p>
+    * For example, using the "Monster" code found on the "landing page". An
+    * object of type `Monster` can be created using the following code:
+    *
+    * <pre>{@code
+    * int testArrayOfString = Monster.createTestarrayofstringVector(fbb, new int[] {
+    *   fbb.createString("test1"),
+    *   fbb.createString("test2")
+    * });
+    *
+    * Monster.startMonster(fbb);
+    * Monster.addPos(fbb, Vec3.createVec3(fbb, 1.0f, 2.0f, 3.0f, 3.0,
+    *   Color.Green, (short)5, (byte)6));
+    * Monster.addHp(fbb, (short)80);
+    * Monster.addName(fbb, str);
+    * Monster.addInventory(fbb, inv);
+    * Monster.addTestType(fbb, (byte)Any.Monster);
+    * Monster.addTest(fbb, mon2);
+    * Monster.addTest4(fbb, test4);
+    * Monster.addTestarrayofstring(fbb, testArrayOfString);
+    * int mon = Monster.endMonster(fbb);
+    * }</pre>
+    * <p>
+    * Here:
+    * <ul>
+    * <li>The call to `Monster#startMonster(FlatBufferBuilder)` will call this
+    * method with the right number of fields set.</li>
+    * <li>`Monster#endMonster(FlatBufferBuilder)` will ensure {@link #endObject()} is called.</li>
+    * </ul>
+    * <p>
+    * It's not recommended to call this method directly.  If it's called manually, you must ensure
+    * to audit all calls to it whenever fields are added or removed from your schema.  This is
+    * automatically done by the code generated by the `FlatBuffers` compiler.
+    *
+    * @param numfields The number of fields found in this object.
+    */
+    public void startObject(int numfields) {
+        notNested();
+        if (vtable == null || vtable.length < numfields) vtable = new int[numfields];
+        vtable_in_use = numfields;
+        Arrays.fill(vtable, 0, vtable_in_use, 0);
+        nested = true;
+        object_start = offset();
+    }
+
+    /**
+     * Add a `boolean` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x A `boolean` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d A `boolean` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addBoolean(int o, boolean x, boolean d) { if(force_defaults || x != d) { addBoolean(x); slot(o); } }
+
+    /**
+     * Add a `byte` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x A `byte` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d A `byte` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addByte   (int o, byte    x, int     d) { if(force_defaults || x != d) { addByte   (x); slot(o); } }
+
+    /**
+     * Add a `short` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x A `short` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d A `short` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addShort  (int o, short   x, int     d) { if(force_defaults || x != d) { addShort  (x); slot(o); } }
+
+    /**
+     * Add an `int` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x An `int` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d An `int` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addInt    (int o, int     x, int     d) { if(force_defaults || x != d) { addInt    (x); slot(o); } }
+
+    /**
+     * Add a `long` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x A `long` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d A `long` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addLong   (int o, long    x, long    d) { if(force_defaults || x != d) { addLong   (x); slot(o); } }
+
+    /**
+     * Add a `float` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x A `float` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d A `float` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addFloat  (int o, float   x, double  d) { if(force_defaults || x != d) { addFloat  (x); slot(o); } }
+
+    /**
+     * Add a `double` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x A `double` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d A `double` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addDouble (int o, double  x, double  d) { if(force_defaults || x != d) { addDouble (x); slot(o); } }
+
+    /**
+     * Add an `offset` to a table at `o` into its vtable, with value `x` and default `d`.
+     *
+     * @param o The index into the vtable.
+     * @param x An `offset` to put into the buffer, depending on how defaults are handled. If
+     * `force_defaults` is `false`, compare `x` against the default value `d`. If `x` contains the
+     * default value, it can be skipped.
+     * @param d An `offset` default value to compare against when `force_defaults` is `false`.
+     */
+    public void addOffset (int o, int     x, int     d) { if(force_defaults || x != d) { addOffset (x); slot(o); } }
+
+    /**
+     * Add a struct to the table. Structs are stored inline, so nothing additional is being added.
+     *
+     * @param voffset The index into the vtable.
+     * @param x The offset of the created struct.
+     * @param d The default value is always `0`.
+     */
+    public void addStruct(int voffset, int x, int d) {
+        if(x != d) {
+            Nested(x);
+            slot(voffset);
+        }
+    }
+
+    /**
+     * Set the current vtable at `voffset` to the current location in the buffer.
+     *
+     * @param voffset The index into the vtable to store the offset relative to the end of the
+     * buffer.
+     */
+    public void slot(int voffset) {
+        vtable[voffset] = offset();
+    }
+
+   /**
+    * Finish off writing the object that is under construction.
+    *
+    * @return The offset to the object inside {@link #dataBuffer()}.
+    * @see #startObject(int)
+    */
+    public int endObject() {
+        if (vtable == null || !nested)
+            throw new AssertionError("FlatBuffers: endObject called without startObject");
+        addInt(0);
+        int vtableloc = offset();
+        // Write out the current vtable.
+        for (int i = vtable_in_use - 1; i >= 0 ; i--) {
+            // Offset relative to the start of the table.
+            short off = (short)(vtable[i] != 0 ? vtableloc - vtable[i] : 0);
+            addShort(off);
+        }
+
+        final int standard_fields = 2; // The fields below:
+        addShort((short)(vtableloc - object_start));
+        addShort((short)((vtable_in_use + standard_fields) * SIZEOF_SHORT));
+
+        // Search for an existing vtable that matches the current one.
+        int existing_vtable = 0;
+        outer_loop:
+        for (int i = 0; i < num_vtables; i++) {
+            int vt1 = bb.capacity() - vtables[i];
+            int vt2 = space;
+            short len = bb.getShort(vt1);
+            if (len == bb.getShort(vt2)) {
+                for (int j = SIZEOF_SHORT; j < len; j += SIZEOF_SHORT) {
+                    if (bb.getShort(vt1 + j) != bb.getShort(vt2 + j)) {
+                        continue outer_loop;
+                    }
+                }
+                existing_vtable = vtables[i];
+                break outer_loop;
+            }
+        }
+
+        if (existing_vtable != 0) {
+            // Found a match:
+            // Remove the current vtable.
+            space = bb.capacity() - vtableloc;
+            // Point table to existing vtable.
+            bb.putInt(space, existing_vtable - vtableloc);
+        } else {
+            // No match:
+            // Add the location of the current vtable to the list of vtables.
+            if (num_vtables == vtables.length) vtables = Arrays.copyOf(vtables, num_vtables * 2);
+            vtables[num_vtables++] = offset();
+            // Point table to current vtable.
+            bb.putInt(bb.capacity() - vtableloc, offset() - vtableloc);
+        }
+
+        nested = false;
+        return vtableloc;
+    }
+
+    /**
+     * Checks that a required field has been set in a given table that has
+     * just been constructed.
+     *
+     * @param table The offset to the start of the table from the `ByteBuffer` capacity.
+     * @param field The offset to the field in the vtable.
+     */
+    public void required(int table, int field) {
+        int table_start = bb.capacity() - table;
+        int vtable_start = table_start - bb.getInt(table_start);
+        boolean ok = bb.getShort(vtable_start + field) != 0;
+        // If this fails, the caller will show what field needs to be set.
+        if (!ok)
+            throw new AssertionError("FlatBuffers: field " + field + " must be set");
+    }
+    /// @endcond
+
+    /**
+     * Finalize a buffer, pointing to the given `root_table`.
+     *
+     * @param root_table An offset to be added to the buffer.
+     */
+    public void finish(int root_table) {
+        prep(minalign, SIZEOF_INT);
+        addOffset(root_table);
+        bb.position(space);
+        finished = true;
+    }
+
+    /**
+     * Finalize a buffer, pointing to the given `root_table`.
+     *
+     * @param root_table An offset to be added to the buffer.
+     * @param file_identifier A FlatBuffer file identifier to be added to the buffer before
+     * `root_table`.
+     */
+    public void finish(int root_table, String file_identifier) {
+        prep(minalign, SIZEOF_INT + FILE_IDENTIFIER_LENGTH);
+        if (file_identifier.length() != FILE_IDENTIFIER_LENGTH)
+            throw new AssertionError("FlatBuffers: file identifier must be length " +
+                                     FILE_IDENTIFIER_LENGTH);
+        for (int i = FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {
+            addByte((byte)file_identifier.charAt(i));
+        }
+        finish(root_table);
+    }
+
+    /**
+     * In order to save space, fields that are set to their default value
+     * don't get serialized into the buffer. Forcing defaults provides a
+     * way to manually disable this optimization.
+     *
+     * @param forceDefaults When set to `true`, always serializes default values.
+     * @return Returns `this`.
+     */
+    public FlatBufferBuilder forceDefaults(boolean forceDefaults){
+        this.force_defaults = forceDefaults;
+        return this;
+    }
+
+    /**
+     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+     * called `finish()`. The actual data starts at the ByteBuffer's current position,
+     * not necessarily at `0`.
+     *
+     * @return The {@link ByteBuffer} representing the FlatBuffer
+     */
+    public ByteBuffer dataBuffer() {
+        finished();
+        return bb;
+    }
+
+   /**
+    * The FlatBuffer data doesn't start at offset 0 in the {@link ByteBuffer}, but
+    * now the {@code ByteBuffer}'s position is set to that location upon {@link #finish(int)}.
+    *
+    * @return The {@link ByteBuffer#position() position} the data starts in {@link #dataBuffer()}
+    * @deprecated This method should not be needed anymore, but is left
+    * here for the moment to document this API change. It will be removed in the future.
+    */
+    @Deprecated
+    private int dataStart() {
+        finished();
+        return space;
+    }
+
+   /**
+    * A utility function to copy and return the ByteBuffer data from `start` to
+    * `start` + `length` as a `byte[]`.
+    *
+    * @param start Start copying at this offset.
+    * @param length How many bytes to copy.
+    * @return A range copy of the {@link #dataBuffer() data buffer}.
+    * @throws IndexOutOfBoundsException If the range of bytes is ouf of bound.
+    */
+    public byte[] sizedByteArray(int start, int length){
+        finished();
+        byte[] array = new byte[length];
+        bb.position(start);
+        bb.get(array);
+        return array;
+    }
+
+   /**
+    * A utility function to copy and return the ByteBuffer data as a `byte[]`.
+    *
+    * @return A full copy of the {@link #dataBuffer() data buffer}.
+    */
+    public byte[] sizedByteArray() {
+        return sizedByteArray(space, bb.capacity() - space);
+    }
+}
+
+/// @}

src/main/java/com/google/flatbuffers/Struct.java

+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.flatbuffers;
+
+import java.nio.ByteBuffer;
+
+/// @cond FLATBUFFERS_INTERNAL
+
+/**
+ * All structs in the generated code derive from this class, and add their own accessors.
+ */
+public class Struct {
+  /** Used to hold the position of the `bb` buffer. */
+  protected int bb_pos;
+  /** The underlying ByteBuffer to hold the data of the Struct. */
+  protected ByteBuffer bb;
+}
+
+/// @endcond

src/main/java/com/google/flatbuffers/Table.java

+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.flatbuffers;
+
+import static com.google.flatbuffers.Constants.*;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.CharBuffer;
+import java.nio.charset.CharacterCodingException;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.CoderResult;
+
+/// @cond FLATBUFFERS_INTERNAL
+
+/**
+ * All tables in the generated code derive from this class, and add their own accessors.
+ */
+public class Table {
+  private final static ThreadLocal<CharsetDecoder> UTF8_DECODER = new ThreadLocal<CharsetDecoder>() {
+    @Override
+    protected CharsetDecoder initialValue() {
+      return Charset.forName("UTF-8").newDecoder();
+    }
+  };
+  public final static ThreadLocal<Charset> UTF8_CHARSET = new ThreadLocal<Charset>() {
+    @Override
+    protected Charset initialValue() {
+      return Charset.forName("UTF-8");
+    }
+  };
+  private final static ThreadLocal<CharBuffer> CHAR_BUFFER = new ThreadLocal<CharBuffer>();
+  /** Used to hold the position of the `bb` buffer. */
+  protected int bb_pos;
+  /** The underlying ByteBuffer to hold the data of the Table. */
+  protected ByteBuffer bb;
+
+  /**
+   * Get the underlying ByteBuffer.
+   *
+   * @return Returns the Table's ByteBuffer.
+   */
+  public ByteBuffer getByteBuffer() { return bb; }
+
+  /**
+   * Look up a field in the vtable.
+   *
+   * @param vtable_offset An `int` offset to the vtable in the Table's ByteBuffer.
+   * @return Returns an offset into the object, or `0` if the field is not present.
+   */
+  protected int __offset(int vtable_offset) {
+    int vtable = bb_pos - bb.getInt(bb_pos);
+    return vtable_offset < bb.getShort(vtable) ? bb.getShort(vtable + vtable_offset) : 0;
+  }
+
+  protected static int __offset(int vtable_offset, int offset, ByteBuffer bb) {
+    int vtable = bb.array().length - offset;
+    return bb.getShort(vtable + vtable_offset - bb.getInt(vtable)) + vtable;
+  }
+
+  /**
+   * Retrieve a relative offset.
+   *
+   * @param offset An `int` index into the Table's ByteBuffer containing the relative offset.
+   * @return Returns the relative offset stored at `offset`.
+   */
+  protected int __indirect(int offset) {
+    return offset + bb.getInt(offset);
+  }
+
+  protected static int __indirect(int offset, ByteBuffer bb) {
+    return offset + bb.getInt(offset);
+  }
+
+  /**
+   * Create a Java `String` from UTF-8 data stored inside the FlatBuffer.
+   *
+   * This allocates a new string and converts to wide chars upon each access,
+   * which is not very efficient. Instead, each FlatBuffer string also comes with an
+   * accessor based on __vector_as_bytebuffer below, which is much more efficient,
+   * assuming your Java program can handle UTF-8 data directly.
+   *
+   * @param offset An `int` index into the Table's ByteBuffer.
+   * @return Returns a `String` from the data stored inside the FlatBuffer at `offset`.
+   */
+  protected String __string(int offset) {
+    CharsetDecoder decoder = UTF8_DECODER.get();
+    decoder.reset();
+
+    offset += bb.getInt(offset);
+    ByteBuffer src = bb.duplicate().order(ByteOrder.LITTLE_ENDIAN);
+    int length = src.getInt(offset);
+    src.position(offset + SIZEOF_INT);
+    src.limit(offset + SIZEOF_INT + length);
+
+    int required = (int)((float)length * decoder.maxCharsPerByte());
+    CharBuffer dst = CHAR_BUFFER.get();
+    if (dst == null || dst.capacity() < required) {
+      dst = CharBuffer.allocate(required);
+      CHAR_BUFFER.set(dst);
+    }
+
+    dst.clear();
+
+    try {
+      CoderResult cr = decoder.decode(src, dst, true);
+      if (!cr.isUnderflow()) {
+        cr.throwException();
+      }
+    } catch (CharacterCodingException x) {
+      throw new Error(x);
+    }
+
+    return dst.flip().toString();
+  }
+
+  /**
+   * Get the length of a vector.
+   *
+   * @param offset An `int` index into the Table's ByteBuffer.
+   * @return Returns the length of the vector whose offset is stored at `offset`.
+   */
+  protected int __vector_len(int offset) {
+    offset += bb_pos;
+    offset += bb.getInt(offset);
+    return bb.getInt(offset);
+  }
+
+  /**
+   * Get the start data of a vector.
+   *
+   * @param offset An `int` index into the Table's ByteBuffer.
+   * @return Returns the start of the vector data whose offset is stored at `offset`.
+   */
+  protected int __vector(int offset) {
+    offset += bb_pos;
+    return offset + bb.getInt(offset) + SIZEOF_INT;  // data starts after the length
+  }
+
+  /**
+   * Get a whole vector as a ByteBuffer.
+   *
+   * This is efficient, since it only allocates a new {@link ByteBuffer} object,
+   * but does not actually copy the data, it still refers to the same bytes
+   * as the original ByteBuffer. Also useful with nested FlatBuffers, etc.
+   *
+   * @param vector_offset The position of the vector in the byte buffer
+   * @param elem_size The size of each element in the array
+   * @return The {@link ByteBuffer} for the array
+   */
+  protected ByteBuffer __vector_as_bytebuffer(int vector_offset, int elem_size) {
+    int o = __offset(vector_offset);
+    if (o == 0) return null;
+    ByteBuffer bb = this.bb.duplicate().order(ByteOrder.LITTLE_ENDIAN);
+    int vectorstart = __vector(o);
+    bb.position(vectorstart);
+    bb.limit(vectorstart + __vector_len(o) * elem_size);
+    return bb;
+  }
+
+  /**
+   * Initialize any Table-derived type to point to the union at the given `offset`.
+   *
+   * @param t A `Table`-derived type that should point to the union at `offset`.
+   * @param offset An `int` index into the Table's ByteBuffer.
+   * @return Returns the Table that points to the union at `offset`.
+   */
+  protected Table __union(Table t, int offset) {
+    offset += bb_pos;
+    t.bb_pos = offset + bb.getInt(offset);
+    t.bb = bb;
+    return t;
+  }
+
+  /**
+   * Check if a {@link ByteBuffer} contains a file identifier.
+   *
+   * @param bb A {@code ByteBuffer} to check if it contains the identifier
+   * `ident`.
+   * @param ident A `String` identifier of the FlatBuffer file.
+   * @return True if the buffer contains the file identifier
+   */
+  protected static boolean __has_identifier(ByteBuffer bb, String ident) {
+    if (ident.length() != FILE_IDENTIFIER_LENGTH)
+        throw new AssertionError("FlatBuffers: file identifier must be length " +
+                                 FILE_IDENTIFIER_LENGTH);
+    for (int i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {
+      if (ident.charAt(i) != (char)bb.get(bb.position() + SIZEOF_INT + i)) return false;
+    }
+    return true;
+  }
+
+  /**
+   * Sort tables by the key.
+   *
+   * @param offsets An 'int' indexes of the tables into the bb.
+   * @param bb A {@code ByteBuffer} to get the tables.
+   */
+  protected void sortTables(int[] offsets, final ByteBuffer bb) {
+    Integer[] off = new Integer[offsets.length];
+    for (int i = 0; i < offsets.length; i++) off[i] = offsets[i];
+    java.util.Arrays.sort(off, new java.util.Comparator<Integer>() {
+      public int compare(Integer o1, Integer o2) {
+        return keysCompare(o1, o2, bb);
+      }
+    });
+    for (int i = 0; i < offsets.length; i++) offsets[i] = off[i];
+  }
+
+  /**
+   * Compare two tables by the key.
+   *
+   * @param o1 An 'Integer' index of the first key into the bb.
+   * @param o2 An 'Integer' index of the second key into the bb.
+   * @param bb A {@code ByteBuffer} to get the keys.
+   */
+  protected int keysCompare(Integer o1, Integer o2, ByteBuffer bb) { return 0; }
+
+  /**
+   * Compare two strings in the buffer.
+   *
+   * @param offset_1 An 'int' index of the first string into the bb.
+   * @param offset_2 An 'int' index of the second string into the bb.
+   * @param bb A {@code ByteBuffer} to get the strings.
+   */
+  protected static int compareStrings(int offset_1, int offset_2, ByteBuffer bb) {
+    offset_1 += bb.getInt(offset_1);
+    offset_2 += bb.getInt(offset_2);
+    int len_1 = bb.getInt(offset_1);
+    int len_2 = bb.getInt(offset_2);
+    int startPos_1 = offset_1 + SIZEOF_INT;
+    int startPos_2 = offset_2 + SIZEOF_INT;
+    int len = Math.min(len_1, len_2);
+    byte[] bbArray = bb.array();
+    for(int i = 0; i < len; i++) {
+      if (bbArray[i + startPos_1] != bbArray[i + startPos_2])
+        return bbArray[i + startPos_1] - bbArray[i + startPos_2];
+    }
+    return len_1 - len_2;
+  }
+
+  /**
+   * Compare string from the buffer with the 'String' object.
+   *
+   * @param offset_1 An 'int' index of the first string into the bb.
+   * @param key Second string as a byte array.
+   * @param bb A {@code ByteBuffer} to get the first string.
+   */
+  protected static int compareStrings(int offset_1, byte[] key, ByteBuffer bb) {
+    offset_1 += bb.getInt(offset_1);
+    int len_1 = bb.getInt(offset_1);
+    int len_2 = key.length;
+    int startPos_1 = offset_1 + Constants.SIZEOF_INT;
+    int len = Math.min(len_1, len_2);
+    byte[] bbArray = bb.array();
+    for (int i = 0; i < len; i++) {
+      if (bbArray[i + startPos_1] != key[i])
+        return bbArray[i + startPos_1] - key[i];
+    }
+    return len_1 - len_2;
+  }
+}
+
+/// @endcond

src/main/java/microservice/common/context/CrudMethod.java

+// automatically generated by the FlatBuffers compiler, do not modify
+
+package microservice.common.context;
+
+public final class CrudMethod {
+  private CrudMethod() { }
+  public static final byte Create = 0;
+  public static final byte Read = 1;
+  public static final byte Update = 2;
+  public static final byte Delete = 3;
+
+  public static final String[] names = { "Create", "Read", "Update", "Delete", };
+
+  public static String name(int e) { return names[e]; }
+}
+

src/main/java/microservice/RestContext.java → src/main/java/microservice/common/context/RestContext.java

-package microservice;
+package microservice.common.context;
 
 
 import java.util.Deque;
 import java.util.Deque;
 import java.util.Map;
 import java.util.Map;

src/main/java/microservice/common/context/RestMsg.java

+// automatically generated by the FlatBuffers compiler, do not modify
+
+package microservice.common.context;
+
+import java.nio.*;
+import java.lang.*;
+import java.util.*;
+import com.google.flatbuffers.*;
+
+@SuppressWarnings("unused")
+public final class RestMsg extends Table {
+  public static RestMsg getRootAsRestMsg(ByteBuffer _bb) { return getRootAsRestMsg(_bb, new RestMsg()); }
+  public static RestMsg getRootAsRestMsg(ByteBuffer _bb, RestMsg obj) { _bb.order(ByteOrder.LITTLE_ENDIAN); return (obj.__assign(_bb.getInt(_bb.position()) + _bb.position(), _bb)); }
+  public void __init(int _i, ByteBuffer _bb) { bb_pos = _i; bb = _bb; }
+  public RestMsg __assign(int _i, ByteBuffer _bb) { __init(_i, _bb); return this; }
+
+  public long rcid() { int o = __offset(4); return o != 0 ? bb.getLong(o + bb_pos) : 0L; }
+  public String source() { int o = __offset(6); return o != 0 ? __string(o + bb_pos) : null; }
+  public ByteBuffer sourceAsByteBuffer() { return __vector_as_bytebuffer(6, 1); }
+  public byte crudMethod() { int o = __offset(8); return o != 0 ? bb.get(o + bb_pos) : 1; }
+  public String url() { int o = __offset(10); return o != 0 ? __string(o + bb_pos) : null; }
+  public ByteBuffer urlAsByteBuffer() { return __vector_as_bytebuffer(10, 1); }
+  public String queryString() { int o = __offset(12); return o != 0 ? __string(o + bb_pos) : null; }
+  public ByteBuffer queryStringAsByteBuffer() { return __vector_as_bytebuffer(12, 1); }
+  public String content() { int o = __offset(14); return o != 0 ? __string(o + bb_pos) : null; }
+  public ByteBuffer contentAsByteBuffer() { return __vector_as_bytebuffer(14, 1); }
+
+  public static int createRestMsg(FlatBufferBuilder builder,
+      long rcid,
+      int sourceOffset,
+      byte crudMethod,
+      int urlOffset,
+      int queryStringOffset,
+      int contentOffset) {
+    builder.startObject(6);
+    RestMsg.addRcid(builder, rcid);
+    RestMsg.addContent(builder, contentOffset);
+    RestMsg.addQueryString(builder, queryStringOffset);
+    RestMsg.addUrl(builder, urlOffset);
+    RestMsg.addSource(builder, sourceOffset);
+    RestMsg.addCrudMethod(builder, crudMethod);
+    return RestMsg.endRestMsg(builder);
+  }
+
+  public static void startRestMsg(FlatBufferBuilder builder) { builder.startObject(6); }
+  public static void addRcid(FlatBufferBuilder builder, long rcid) { builder.addLong(0, rcid, 0L); }
+  public static void addSource(FlatBufferBuilder builder, int sourceOffset) { builder.addOffset(1, sourceOffset, 0); }
+  public static void addCrudMethod(FlatBufferBuilder builder, byte crudMethod) { builder.addByte(2, crudMethod, 1); }
+  public static void addUrl(FlatBufferBuilder builder, int urlOffset) { builder.addOffset(3, urlOffset, 0); }
+  public static void addQueryString(FlatBufferBuilder builder, int queryStringOffset) { builder.addOffset(4, queryStringOffset, 0); }
+  public static void addContent(FlatBufferBuilder builder, int contentOffset) { builder.addOffset(5, contentOffset, 0); }
+  public static int endRestMsg(FlatBufferBuilder builder) {
+    int o = builder.endObject();
+    return o;
+  }
+  public static void finishRestMsgBuffer(FlatBufferBuilder builder, int offset) { builder.finish(offset); }
+}
+

src/main/java/microservice/common/context/RestResponse.java

+// automatically generated by the FlatBuffers compiler, do not modify
+
+package microservice.common.context;
+
+import java.nio.*;
+import java.lang.*;
+import java.util.*;
+import com.google.flatbuffers.*;
+
+@SuppressWarnings("unused")
+public final class RestResponse extends Table {
+  public static RestResponse getRootAsRestResponse(ByteBuffer _bb) { return getRootAsRestResponse(_bb, new RestResponse()); }
+  public static RestResponse getRootAsRestResponse(ByteBuffer _bb, RestResponse obj) { _bb.order(ByteOrder.LITTLE_ENDIAN); return (obj.__assign(_bb.getInt(_bb.position()) + _bb.position(), _bb)); }
+  public void __init(int _i, ByteBuffer _bb) { bb_pos = _i; bb = _bb; }
+  public RestResponse __assign(int _i, ByteBuffer _bb) { __init(_i, _bb); return this; }
+
+  public long rcid() { int o = __offset(4); return o != 0 ? bb.getLong(o + bb_pos) : 0L; }
+  public String response() { int o = __offset(6); return o != 0 ? __string(o + bb_pos) : null; }
+  public ByteBuffer responseAsByteBuffer() { return __vector_as_bytebuffer(6, 1); }
+
+  public static int createRestResponse(FlatBufferBuilder builder,
+      long rcid,
+      int responseOffset) {
+    builder.startObject(2);
+    RestResponse.addRcid(builder, rcid);
+    RestResponse.addResponse(builder, responseOffset);
+    return RestResponse.endRestResponse(builder);
+  }
+
+  public static void startRestResponse(FlatBufferBuilder builder) { builder.startObject(2); }
+  public static void addRcid(FlatBufferBuilder builder, long rcid) { builder.addLong(0, rcid, 0L); }
+  public static void addResponse(FlatBufferBuilder builder, int responseOffset) { builder.addOffset(1, responseOffset, 0); }
+  public static int endRestResponse(FlatBufferBuilder builder) {
+    int o = builder.endObject();
+    return o;
+  }
+  public static void finishRestResponseBuffer(FlatBufferBuilder builder, int offset) { builder.finish(offset); }
+}
+

src/main/java/microservice/handlers/BaseHandler.java

@@ -6,7 +6,7 @@ import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 
 import microservice.MicroserviceApp;
 import microservice.MicroserviceApp;
-import microservice.RestContext;
+import microservice.common.context.RestContext;
 import microservice.io.iface.IConfiguration;
 import microservice.io.iface.IConfiguration;
 import microservice.io.iface.IContainer;
 import microservice.io.iface.IContainer;
 import microservice.io.iface.ILogger;
 import microservice.io.iface.ILogger;
@@ -90,31 +90,33 @@ public abstract class BaseHandler
 
 
 	public void subscribe(RestContext reqCtx, String topic, INotifyCallback notifyHandler)
 	public void subscribe(RestContext reqCtx, String topic, INotifyCallback notifyHandler)
 	{
 	{
-		reqCtx.container.subscribe(topic,notifyHandler);
+//		reqCtx.container.subscribe(topic,notifyHandler);
 	}
 	}
 	
 	
 	public void unsubscribe(RestContext reqCtx, String topic)
 	public void unsubscribe(RestContext reqCtx, String topic)
 	{
 	{
-		reqCtx.container.unsubscribe(topic);
+
+		//reqCtx.container.unsubscribe(topic);
 	}
 	}
 	
 	
 	public void publish(String topic, JsonNode messageNode)
 	public void publish(String topic, JsonNode messageNode)
 	{
 	{
-		optContainer.ifPresent(container -> container.publish(topic,messageNode));
+//		optContainer.ifPresent(container -> container.publish(topic,messageNode));
 	}
 	}
 	public void subscribe(String topic, INotifyCallback notifyHandler)
 	public void subscribe(String topic, INotifyCallback notifyHandler)
 	{
 	{
-		optContainer.ifPresent(container -> container.subscribe(topic,notifyHandler));
+//		optContainer.ifPresent(container -> container.subscribe(topic,notifyHandler));
 	}
 	}
 	
 	
 	public void unsubscribe(String topic)
 	public void unsubscribe(String topic)
 	{
 	{
-		optContainer.ifPresent(container -> container.unsubscribe(topic));
+
+//		optContainer.ifPresent(container -> container.unsubscribe(topic));
 	}
 	}
 	
 	
 	public void publish(RestContext reqCtx, String topic, JsonNode messageNode)
 	public void publish(RestContext reqCtx, String topic, JsonNode messageNode)
 	{
 	{
-		reqCtx.container.publish(topic,messageNode);
+//		reqCtx.container.publish(topic,messageNode);
 	}
 	}
 
 
 	
 	

src/main/java/microservice/handlers/MBIHandler.java

@@ -5,7 +5,7 @@ import java.util.Deque;
 import java.util.HashMap;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Map;
 
 
-import microservice.RestContext;
+import microservice.common.context.RestContext;
 import microservice.defs.Constants;
 import microservice.defs.Constants;
 import microservice.defs.Enums.EnumHttpMethod;
 import microservice.defs.Enums.EnumHttpMethod;
 import microservice.io.iface.*;
 import microservice.io.iface.*;
@@ -199,25 +199,25 @@ public class MBIHandler extends RMQHandler implements IContainer
 		return obj;
 		return obj;
 	}
 	}
 
 
-	@Override
-	public void subscribe(String topic, INotifyCallback notifyHandler)
-	{
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public void unsubscribe(String topic)
-	{
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public void publish(String topic, JsonNode messageNode)
-	{
-		// TODO Auto-generated method stub
-		
-	}
+//	@Override
+//	public void subscribe(String topic, INotifyCallback notifyHandler)
+//	{
+//		// TODO Auto-generated method stub
+//
+//	}
+//
+//	@Override
+//	public void unsubscribe(String topic)
+//	{
+//		// TODO Auto-generated method stub
+//
+//	}
+//
+//	@Override
+//	public void publish(String topic, JsonNode messageNode)
+//	{
+//		// TODO Auto-generated method stub
+//
+//	}
 
 
 }
 }

src/main/java/microservice/handlers/MonitorHandler.java

@@ -12,7 +12,7 @@ import microservice.io.iface.CommonServices;
 import microservice.io.iface.IConfiguration;
 import microservice.io.iface.IConfiguration;
 import microservice.io.impl.IMetricsFactoryImpl;
 import microservice.io.impl.IMetricsFactoryImpl;
 import microservice.types.BaseRestResponse;
 import microservice.types.BaseRestResponse;
-import microservice.RestContext;
+import microservice.common.context.RestContext;
 
 
 /**
 /**
  * this class is for monitoring the microservice
  * this class is for monitoring the microservice

src/main/java/microservice/handlers/RestHandler.java

@@ -11,10 +11,9 @@ import io.undertow.util.HeaderMap;
 import io.undertow.util.Headers;
 import io.undertow.util.Headers;
 import io.undertow.util.HttpString;
 import io.undertow.util.HttpString;
 import microservice.MicroserviceApp;
 import microservice.MicroserviceApp;
-import microservice.RestContext;
+import microservice.common.context.RestContext;
 import microservice.common.EncryptionUtils;
 import microservice.common.EncryptionUtils;
 import microservice.defs.Constants;
 import microservice.defs.Constants;
-import microservice.defs.Enums;
 import microservice.defs.Enums.EnumHttpMethod;
 import microservice.defs.Enums.EnumHttpMethod;
 import microservice.io.iface.*;
 import microservice.io.iface.*;
 import microservice.io.iface.IMetricsFactory.IMeter;
 import microservice.io.iface.IMetricsFactory.IMeter;
@@ -363,37 +362,37 @@ public class RestHandler implements HttpHandler , IContainer
 	}
 	}
 
 
 
 
-		@Override
-		public void subscribe(String topic, INotifyCallback notifyHandler)
-		{
-			if (pubSub != null && topic != null && notifyHandler != null)
-			{
-				pubSub.subscribe(topic, notifyHandler);
-			}
-			
-		}
-	
-	
-		@Override
-		public void unsubscribe(String topic)
-		{
-			// TODO Auto-generated method stub
-			if (pubSub != null && topic != null)
-			{
-				pubSub.unsubscribe(topic);
-			}
-		}
-	
-	
-		@Override
-		public void publish(String topic, JsonNode messageNode)
-		{
-			if (pubSub != null && topic != null)
-			{
-				pubSub.publish(topic, messageNode.toString());
-			}
-		}
-
+//		@Override
+//		public void subscribe(String topic, INotifyCallback notifyHandler)
+//		{
+//			if (pubSub != null && topic != null && notifyHandler != null)
+//			{
+//				pubSub.subscribe(topic, notifyHandler);
+//			}
+//
+//		}
+//
+//
+//		@Override
+//		public void unsubscribe(String topic)
+//		{
+//			// TODO Auto-generated method stub
+//			if (pubSub != null && topic != null)
+//			{
+//				pubSub.unsubscribe(topic);
+//			}
+//		}
+//
+//
+//		@Override
+//		public void publish(String topic, JsonNode messageNode)
+//		{
+//			if (pubSub != null && topic != null)
+//			{
+//				pubSub.publish(topic, messageNode.toString());
+//			}
+//		}
+//
 
 
 				
 				
 }
 }

src/main/java/microservice/io/iface/IContainer.java

@@ -36,21 +36,21 @@ public interface IContainer
 	 */
 	 */
 	public Object readObjectFromRequest(IRequest request,Class<?> ObjClass);
 	public Object readObjectFromRequest(IRequest request,Class<?> ObjClass);
 
 
-	/**
-	 * subscribing to specific topic
-	 * @param topic
-	 * @param notifyHandler
-	 */
-	public void subscribe(String topic, INotifyCallback notifyHandler);
-
-	public void unsubscribe(String topic);
-
-	/**
-	 * publish msg on specific topic
-	 * @param topic
-	 * @param messageNode
-	 */
-	public void publish(String topic, JsonNode messageNode);
-
+//	/**
+//	 * subscribing to specific topic
+//	 * @param topic
+//	 * @param notifyHandler
+//	 */
+//	public void subscribe(String topic, INotifyCallback notifyHandler);
+//
+//	public void unsubscribe(String topic);
+//
+//	/**
+//	 * publish msg on specific topic
+//	 * @param topic
+//	 * @param messageNode
+//	 */
+//	public void publish(String topic, JsonNode messageNode);
+//
 	
 	
 }
 }

src/main/java/microservice/io/impl/service/IRestServiceHttpImpl.java

@@ -8,7 +8,6 @@ import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.ExpiredJwtException;
 import io.jsonwebtoken.ExpiredJwtException;
 import io.undertow.Handlers;
 import io.undertow.Handlers;
 import io.undertow.Undertow;
 import io.undertow.Undertow;
-import io.undertow.server.Connectors;
 import io.undertow.server.HttpHandler;
 import io.undertow.server.HttpHandler;
 import io.undertow.server.HttpServerExchange;
 import io.undertow.server.HttpServerExchange;
 import io.undertow.server.handlers.PathHandler;
 import io.undertow.server.handlers.PathHandler;
@@ -18,8 +17,7 @@ import io.undertow.util.Headers;
 import io.undertow.util.HttpString;
 import io.undertow.util.HttpString;
 import io.undertow.util.MimeMappings;
 import io.undertow.util.MimeMappings;
 import microservice.MicroserviceApp;
 import microservice.MicroserviceApp;
-import microservice.MicroserviceClient;
-import microservice.RestContext;
+import microservice.common.context.RestContext;
 import microservice.common.EncryptionUtils;
 import microservice.common.EncryptionUtils;
 import microservice.defs.Constants;
 import microservice.defs.Constants;
 import microservice.defs.Enums;
 import microservice.defs.Enums;
@@ -28,19 +26,13 @@ import microservice.handlers.Reactor;
 import microservice.io.iface.*;
 import microservice.io.iface.*;
 import microservice.io.impl.IRequestRestImpl;
 import microservice.io.impl.IRequestRestImpl;
 import microservice.io.impl.IResponseRestImpl;
 import microservice.io.impl.IResponseRestImpl;
-import microservice.io.impl.IRestClientRestImpl;
-import microservice.params.BaseClientParams;
 import microservice.params.CommandParams;
 import microservice.params.CommandParams;
-import microservice.params.RestClientParams;
 import microservice.params.RestServerParams;
 import microservice.params.RestServerParams;
 import microservice.types.BaseRestResponse;
 import microservice.types.BaseRestResponse;
 import microservice.types.UserProfile;
 import microservice.types.UserProfile;
 
 
-import java.util.Timer;
-import java.util.TimerTask;
 import java.util.function.BooleanSupplier;
 import java.util.function.BooleanSupplier;
 import java.util.function.Consumer;
 import java.util.function.Consumer;
-import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.function.Supplier;
 
 
 import static io.undertow.Handlers.resource;
 import static io.undertow.Handlers.resource;
@@ -370,22 +362,6 @@ public class IRestServiceHttpImpl extends CommonServices.IRestService implements
         return obj;
         return obj;
     }
     }
 
 
-    @Override
-    public void subscribe(String topic, INotifyCallback notifyHandler) {
-
-    }
-
-    @Override
-    public void unsubscribe(String topic) {
-
-    }
-
-    @Override
-    public void publish(String topic, JsonNode messageNode) {
-
-    }
-
-
     /**
     /**
      * validate the request: service authorization etc.
      * validate the request: service authorization etc.
      * @param restContext
      * @param restContext

src/main/java/microservice/io/impl/service/IRestServiceZmqImpl.java

+package microservice.io.impl.service;
+
+import io.undertow.server.HttpHandler;
+import io.undertow.server.HttpServerExchange;
+import microservice.io.iface.*;
+import microservice.params.CommandParams;
+import microservice.types.BaseRestResponse;
+
+import java.util.function.Consumer;
+
+/**
+ * Created by amir on 14/05/17.
+ */
+public class IRestServiceZmqImpl extends CommonServices.IRestService implements HttpHandler, IContainer {
+
+    private String appName;
+    private String host = null; // the local host address of the service
+
+    private int port = 0; // in case of port like in tcp
+    @Override
+    public void handleRequest(HttpServerExchange exchange) throws Exception {
+
+    }
+
+    @Override
+    public BaseRestResponse create(CommandParams cmdParams) {
+        return null;
+    }
+
+    @Override
+    public BaseRestResponse read(CommandParams cmdParams) {
+        return null;
+    }
+
+    @Override
+    public BaseRestResponse update(CommandParams cmdParams) {
+        return null;
+    }
+
+    @Override
+    public BaseRestResponse delete(CommandParams cmdParams) {
+        return null;
+    }
+
+    @Override
+    public boolean asyncCreate(CommandParams reqCtx, Consumer<BaseRestResponse> cbFunc) {
+        return false;
+    }
+
+    @Override
+    public boolean asyncRead(CommandParams reqCtx, Consumer<BaseRestResponse> cbFunc) {
+        return false;
+    }
+
+    @Override
+    public boolean asyncUpdate(CommandParams reqCtx, Consumer<BaseRestResponse> cbFunc) {
+        return false;
+    }
+
+    @Override
+    public boolean asyncDelete(CommandParams reqCtx, Consumer<BaseRestResponse> cbFunc) {
+        return false;
+    }
+
+    @Override
+    public void sendErrorResp(IResponse response, String error) {
+
+    }
+
+    @Override
+    public void writeObjectToResponse(IResponse response, Object value) {
+
+    }
+
+    @Override
+    public Object readObjectFromRequest(IRequest request, Class<?> ObjClass) {
+        return null;
+    }
+
+    @Override
+    public void startAsync(IRequest request, Runnable asyncFunc) {
+
+    }
+
+    @Override
+    public boolean init() {
+        return false;
+    }
+
+    @Override
+    public void run() {
+
+    }
+
+    @Override
+    public void shutdown() {
+
+    }
+
+    @Override
+    public void handleNotImplmented(CommonServices.IMsgContext msgContext) {
+
+    }
+
+    @Override
+    public void register(IServiceDiscovery serviceDiscovery, String id) {
+        if (serviceDiscovery != null)
+            serviceDiscovery.registerService(appName, id, host, port);
+    }
+}

src/main/java/microservice/params/ZMQParams.java

+package microservice.params;
+
+import jdk.nashorn.internal.ir.EmptyNode;
+
+/**
+ * Created by amir on 14/05/17.
+ */
+public class ZMQParams {
+
+    public static class ServerParams
+    {
+        public enum EnumProtocol
+    {
+        eInproc,
+        eIpc,
+        eTcp,
+        ePgm,
+        eEpgm
+    }
+
+        public ServerParams(EnumProtocol protocol, int port, String host) {
+            this.protocol = protocol;
+            this.port = port;
+            this.host = host;
+        }
+
+        EnumProtocol protocol() { return protocol; }
+
+        public static String buildAddress (String host, int port, EnumProtocol protocol) {
+        StringBuilder bindAddr = new StringBuilder();
+
+        if(! host.isEmpty()) {
+            switch (protocol) {
+                case eInproc:
+                    bindAddr.append("inproc://").append(host);
+                    break;
+                case eIpc:
+                    bindAddr.append("ipc://").append(host);
+                    break;
+                case eTcp:
+                    bindAddr.append("tcp://").append(host).append(":").append(String.valueOf(port));
+                    break;
+                case ePgm:
+                    bindAddr.append("pgm://").append(host).append(":").append(String.valueOf(port));
+                    break;
+                case eEpgm:
+                    bindAddr.append("epgm://").append(host).append(":").append(String.valueOf(port));
+                    break;
+            }
+        }
+        return bindAddr.toString();
+    }
+
+        String bindAddress() { return buildAddress(host,port,protocol);  }
+
+        private EnumProtocol protocol;
+        private int port;
+        String host;
+
+    };
+
+//    class Microservice_ZMQPubSubParams : public Microservice_ZMQServerParams {
+//
+//        public:
+//        Microservice_ZMQPubSubParams(String host,
+//        int port,
+//        eProtocol protocol,
+//        String subHost,
+//        int subPort):
+//        Microservice_ZMQServerParams(host,port,protocol),
+//                subHost_(subHost),subPort_(subPort){
+//
+//        }
+//        String publishAddress()  { return bindAddress(); }
+//        String subscribeAddress() {
+//            return buildAddress(subHost_,subPort_);
+//        }
+//
+//        private:
+//        String subHost_;
+//        int         subPort_;
+//
+//    };
+
+//    class Microservice_ZMQRestClientParams {
+//        public:
+//        Microservice_ZMQRestClientParams(Microservice_ZMQServerParams client, Microservice_ZMQServerParams server) :
+//        client_(client), server_(server){}
+//
+//        Microservice_ZMQServerParams& GetClient() { return client_; }
+//        ServerParams GetServer() { return server; }
+//        private ServerParams server;
+//        Microservice_ZMQServerParams client_;
+//    };
+
+}

src/main/java/microservice/utils/ServiceBuilderFactory.java

@@ -4,8 +4,10 @@ import microservice.io.iface.CommonServices;
 import microservice.io.iface.ICommandClient;
 import microservice.io.iface.ICommandClient;
 import microservice.io.impl.IRestClientRestImpl;
 import microservice.io.impl.IRestClientRestImpl;
 import microservice.io.impl.service.IRestServiceHttpImpl;
 import microservice.io.impl.service.IRestServiceHttpImpl;
+import microservice.io.impl.service.IRestServiceZmqImpl;
 import microservice.params.RestClientParams;
 import microservice.params.RestClientParams;
 import microservice.params.RestServerParams;
 import microservice.params.RestServerParams;
+import microservice.params.ZMQParams;
 
 
 /**
 /**
  * Created by amir on 09/05/17.
  * Created by amir on 09/05/17.
@@ -17,6 +19,10 @@ public class ServiceBuilderFactory {
         return new RestServiceHttpBuilder(serviceMode);
         return new RestServiceHttpBuilder(serviceMode);
     }
     }
 
 
+    public static RestServiceZmqBuilder createRestServiceZmqBuilder(CommonServices.EnumRestServiceMode serviceMode){
+        return new RestServiceZmqBuilder(serviceMode);
+    }
+
     public interface IBuilder {
     public interface IBuilder {
         CommonServices.IService build();
         CommonServices.IService build();
     }
     }
@@ -107,4 +113,77 @@ public class ServiceBuilderFactory {
             return true;
             return true;
         }
         }
     }
     }
+
+
+    public static class RestServiceZmqBuilder implements IBuilder {
+
+        CommonServices.EnumRestServiceMode serviceMode = CommonServices.EnumRestServiceMode.E_UNKNOWN;
+        ZMQParams.ServerParams serverParams = null;
+        ZMQParams.ServerParams clientParams = null;
+        IRestServiceZmqImpl restServiceZmq = null;
+        public RestServiceZmqBuilder(CommonServices.EnumRestServiceMode serviceMode) {
+            this.serviceMode = serviceMode;
+        }
+
+        public void setServerParams(ZMQParams.ServerParams serverParams) {
+            this.serverParams = serverParams;
+        }
+        public void setClientParams(ZMQParams.ServerParams clientParams) {
+            this.clientParams = clientParams;
+        }
+
+        private boolean validateParams() {
+            switch (serviceMode){
+                case E_UNKNOWN:
+                    return false;
+                case E_SERVER:
+                    if (this.serverParams == null)
+                        return false;
+                    break;
+                case E_CLIENT:
+                    if (this.clientParams == null)
+                        return false;
+                    break;
+                case E_CLIENT_SERVER:
+                    if (this.serverParams == null || this.clientParams == null)
+                        return false;
+                    break;
+            }
+            return true;
+        }
+
+        @Override
+        public CommonServices.IService build() {
+            if (validateParams()) {
+                try {
+                    restServiceZmq = new IRestServiceZmqImpl();
+                    restServiceZmq.setServiceMode(serviceMode);
+
+//                    switch (serviceMode) {
+//                        case E_SERVER:
+//                            restServiceZmq.setRestServerParams(restServerParams);
+//                            break;
+//                        case E_CLIENT:
+//                            if (restClient == null)
+//                                restClient = new IRestClientRestImpl(restClientParams);
+//                            restServiceZmq.setRestClient(restClient);
+//                            break;
+//                        case E_CLIENT_SERVER:
+//                            restServiceZmq.setRestServerParams(restServerParams);
+//                            if (restClient == null)
+//                                restClient = new IRestClientRestImpl(restClientParams);
+//                            restServiceZmq.setRestClient(restClient);
+//                            break;
+//                    }
+                } catch (Exception exp){
+                    System.err.println(this.getClass().getName().toString() + "Exception >> " + exp);
+                    restServiceZmq = null;
+                }
+            } else {
+                System.err.println(this.getClass().getName().toString() + " >> Failed in validating params");
+            }
+            return restServiceZmq;
+        }
+
+    }
 }
 }

src/test/java/microservice/TestMicroserviceApp.java

@@ -3,6 +3,7 @@ package microservice;
 
 
 import com.fasterxml.jackson.databind.node.JsonNodeFactory;
 import com.fasterxml.jackson.databind.node.JsonNodeFactory;
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
+import microservice.common.context.RestContext;
 import microservice.defs.Enums;
 import microservice.defs.Enums;
 import microservice.io.iface.CommonServices;
 import microservice.io.iface.CommonServices;
 import microservice.io.iface.ICommandClient;
 import microservice.io.iface.ICommandClient;

src/test/java/microservice/TestZMQ.java

+package microservice;
+
+import com.google.flatbuffers.FlatBufferBuilder;
+import microservice.common.context.CrudMethod;
+import microservice.common.context.RestMsg;
+import microservice.common.context.RestResponse;
+import org.junit.Test;
+import org.zeromq.ZMQ;
+import org.zeromq.ZSocket;
+import zmq.Utils;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Created by amir on 11/05/17.
+ */
+public class TestZMQ {
+
+    static final String IPC_FILE1 = "/tmp/service-name1.ipc";
+    static final String IPC_FILE2 = "/tmp/service-name2.ipc";
+    static final String EXIT_MSG = "exit";
+    static final int EXIT_MSG_LEN = EXIT_MSG.length();
+    static final String JSON_CONTENT = "{\n" +
+            "  \"success\": true,\n" +
+            "  \"error\": null,\n" +
+            "  \"objectNode\": {\n" +
+            "    \"success\": true,\n" +
+            "    \"error\": null,\n" +
+            "    \"objectNode\": {\n" +
+            "      \"num_results\": 6,\n" +
+            "      \"query\": \"base\",\n" +
+            "      \"results\": [\n" +
+            "        {\n" +
+            "          \"description\": null,\n" +
+            "          \"name\": \"amir/base-server-no-db\"\n" +
+            "        },\n" +
+            "        {\n" +
+            "          \"description\": null,\n" +
+            "          \"name\": \"amir/base-server-ui\"\n" +
+            "        },\n" +
+            "        {\n" +
+            "          \"description\": null,\n" +
+            "          \"name\": \"amir/base-server-db\"\n" +
+            "        },\n" +
+            "        {\n" +
+            "          \"description\": \"\",\n" +
+            "          \"name\": \"ipgallery/base-ims\"\n" +
+            "        },\n" +
+            "        {\n" +
+            "          \"description\": \"\",\n" +
+            "          \"name\": \"ipgallery/base-resin\"\n" +
+            "        },\n" +
+            "        {\n" +
+            "          \"description\": \"\",\n" +
+            "          \"name\": \"ipgallery/base-microservice-java\"\n" +
+            "        }\n" +
+            "      ]\n" +
+            "    }\n" +
+            "  }\n" +
+            "}";
+
+    static final String SOURCE_CHANNEL = "ipc:///tmp/some-file.ipc";
+
+    static final String URI = "/xxx/resource/subResource";
+
+    static final String QUERY_STRING = "a=b&c=d&abba=sabba";
+
+    @Test
+    public void pushPullTestTCP() throws IOException
+    {
+        int port = Utils.findOpenPort();
+        try (
+                final ZSocket pull = new ZSocket(ZMQ.PULL);
+                final ZSocket push = new ZSocket(ZMQ.PUSH))
+        {
+            pull.bind("tcp://*:" + port);
+            push.connect("tcp://127.0.0.1:" + port);
+
+            final String expected = "hello";
+            push.sendStringUtf8(expected);
+            final String actual = pull.receiveStringUtf8();
+
+            assertEquals(expected, actual);
+        }
+    }
+
+    @Test
+    public void pushPullTestIPC() throws IOException
+    {
+        String ipcName = "//tmp//ipc1";
+
+        //int port = Utils.findOpenPort();
+        try (
+                final ZSocket pull = new ZSocket(ZMQ.PULL);
+                final ZSocket push = new ZSocket(ZMQ.PUSH))
+        {
+            pull.bind("ipc://" + ipcName);
+            push.connect("ipc://" + ipcName);
+
+            final String expected = "hello";
+            push.sendStringUtf8(expected);
+            final String actual = pull.receiveStringUtf8();
+
+            assertEquals(expected, actual);
+        }
+    }
+
+    void testRequestResponse(int iterations) throws InterruptedException {
+        final String ipcFile1 = IPC_FILE1;
+        final String ipcFile2 = IPC_FILE2;
+
+        //zmqpp::context context;
+
+        // create and bind a serverReceive socket
+        String ipcAddress1 = "ipc://" + ipcFile1;
+        String ipcAddress2 = "ipc://" + ipcFile2;
+        final ZSocket clientSend = new ZSocket(ZMQ.PUSH);
+        final ZSocket serverReceive = new ZSocket(ZMQ.PULL);
+        final ZSocket clientReceive = new ZSocket(ZMQ.PULL);
+        final ZSocket serverReply = new ZSocket(ZMQ.PUSH);
+
+        clientSend.connect(ipcAddress1);
+        clientReceive.bind(ipcAddress2);
+        serverReceive.bind(ipcAddress1);
+        serverReply.connect(ipcAddress2);
+
+//        int maxSize = 10000;
+//        serverReceive..set(zmqpp::socket_option::receive_high_water_mark, maxSize);
+//        serverReply.set(zmqpp::socket_option::send_high_water_mark, maxSize);
+//        clientReceive.set(zmqpp::socket_option::receive_high_water_mark, maxSize);
+//        clientSend.set(zmqpp::socket_option::send_high_water_mark, maxSize);
+
+        Thread serverThread = new Thread(() -> {
+            boolean keepRunning = true;
+            ByteBuffer respBB = ByteBuffer.allocate(1024);
+            FlatBufferBuilder requestBuilder = new FlatBufferBuilder();
+            FlatBufferBuilder respBuilder = new FlatBufferBuilder();
+
+            while (keepRunning) {
+                respBuilder.init(respBB);
+                final byte[] response  = serverReceive.receive();
+                if (response.length > EXIT_MSG_LEN) {
+                    ByteBuffer bb = ByteBuffer.wrap(response);
+                    RestMsg receiveMsg = RestMsg.getRootAsRestMsg(bb);
+                    //respBuilder.Clear();
+                    long rcid = receiveMsg.rcid();
+                    final String content = receiveMsg.content();
+                    int contentOffset = respBuilder.createString(content);
+                    int respSize = RestResponse.createRestResponse(respBuilder,rcid,contentOffset);
+                    RestResponse.finishRestResponseBuffer(respBuilder,respSize);
+                    serverReply.send(respBuilder.sizedByteArray(),ZMQ.DONTWAIT);
+                } else {
+                    String msg = new String(response);
+                    //std::cout << "Server Received Msg: " << msg << std::endl;
+                    if (msg.equals(EXIT_MSG) ) {
+                        keepRunning = false;
+                        serverReply.send(msg.getBytes(),ZMQ.DONTWAIT);
+                    }
+//                    else if (response.parts() == 2) {
+//                        msg = response.get(1);
+//                        //  std::cout << "Server Received Second Msg: " << msg << std::endl;
+//                        serverReply.send(msg, zmqpp::socket::dont_wait);
+//                    }
+                }
+            }
+            //std::cout << "Server exit.." << std::endl;
+        });
+        serverThread.start();
+
+        Thread clientReceiveThread = new Thread(() -> {
+            boolean keepRunning = true;
+            int lastNumber;
+            long rcid = 0;
+            //flatbuffers::FlatBufferBuilder respBuilder(1024);
+            while (keepRunning) {
+                //clientReceive.receive(response);
+                final byte[] response = clientReceive.receive();
+                if (response.length > EXIT_MSG_LEN) {
+                    ByteBuffer bb = ByteBuffer.wrap(response);
+                    RestMsg receiveMsg = RestMsg.getRootAsRestMsg(bb);
+                    rcid = receiveMsg.rcid();
+                    //std::cout << "Client Received Msg: " << receiveMsg->objectNode()->c_str() << std::endl;
+                } else {
+                    String msg = new String(response);
+                    //std::cout << "Client Received Msg: " << msg << std::endl;
+                    if (msg.equals(EXIT_MSG))
+                        keepRunning = false;
+                    else
+                        lastNumber = Integer.valueOf(msg);
+                }
+            }
+            //std::cout << "Client exit.." << std::endl;
+        });
+        clientReceiveThread.start();
+
+//
+        // Send a single message from serverReceive to clientSend
+        int size;
+        ByteBuffer reqBB = ByteBuffer.allocate(1024);
+        FlatBufferBuilder requestBuilder = new FlatBufferBuilder();
+        for (int i = 0; i < iterations; i++) {
+            requestBuilder.init(reqBB);
+            //builder.Clear();
+            final int sourceOffset = requestBuilder.createString(SOURCE_CHANNEL);
+            int reqSize = RestMsg.createRestMsg(requestBuilder,
+                    i,
+                    sourceOffset,
+                    CrudMethod.Create,
+                    requestBuilder.createString(URI),
+                    requestBuilder.createString(QUERY_STRING),
+                    requestBuilder.createString(JSON_CONTENT));
+            RestMsg.finishRestMsgBuffer(requestBuilder,reqSize);
+            //std::cout << builder.GetSize() << std::endl;
+            final byte[] bytesToSend = requestBuilder.sizedByteArray();
+            clientSend.send(bytesToSend,ZMQ.DONTWAIT);
+        }
+
+        clientSend.send(EXIT_MSG.getBytes());
+
+
+        serverThread.join();
+        // std::cout << "Server exited" << std::endl;
+        clientReceiveThread.join();
+        //   std::cout << "Client exited" << std::endl;
+    }
+
+
+    @Test
+    public void testPerformance(){
+        int iterations = 1000000;
+        final long start = System.currentTimeMillis();
+        try {
+            testRequestResponse(iterations);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        System.out.println("Test of: " + String.valueOf(iterations) + " took(msec) כולל הקמה ופרוק: " + String.valueOf((System.currentTimeMillis() - start)));
+
+    }
+}