--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/vm-io/common/src/main/java/com/redhat/thermostat/vm/io/common/internal/VmIoStatTypeAdapter.java	Thu May 25 14:15:29 2017 -0400
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2012-2017 Red Hat, Inc.
+ *
+ * This file is part of Thermostat.
+ *
+ * Thermostat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * Thermostat is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Thermostat; see the file COPYING.  If not see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Linking this code with other modules is making a combined work
+ * based on this code.  Thus, the terms and conditions of the GNU
+ * General Public License cover the whole combination.
+ *
+ * As a special exception, the copyright holders of this code give
+ * you permission to link this code with independent modules to
+ * produce an executable, regardless of the license terms of these
+ * independent modules, and to copy and distribute the resulting
+ * executable under terms of your choice, provided that you also
+ * meet, for each linked independent module, the terms and conditions
+ * of the license of that module.  An independent module is a module
+ * which is not derived from or based on this code.  If you modify
+ * this code, you may extend this exception to your version of the
+ * library, but you are not obligated to do so.  If you do not wish
+ * to do so, delete this exception statement from your version.
+ */
+
+package com.redhat.thermostat.vm.io.common.internal;
+
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.redhat.thermostat.vm.io.common.VmIoStat;
+
+import java.io.IOException;
+
+public class VmIoStatTypeAdapter extends TypeAdapter<VmIoStat> {
+
+    private static final String TIMESTAMP = "timeStamp";
+    private static final String VM_ID = "vmId";
+    private static final String AGENT_ID = "agentId";
+    private static final String CHARACTERS_READ = "charactersRead";
+    private static final String CHARACTERS_WRITTEN = "charactersWritten";
+    private static final String READ_SYSCALLS = "readSyscalls";
+    private static final String WRITE_SYSCALLS = "writeSyscalls";
+    private static final String TYPE_LONG = "$numberLong";
+
+    @Override
+    public VmIoStat read(JsonReader in) throws IOException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void write(JsonWriter out, VmIoStat stat) throws IOException {
+        out.beginObject();
+        out.name(TIMESTAMP);
+        writeLong(out, stat.getTimeStamp());
+        out.name(VM_ID);
+        out.value(stat.getVmId());
+        out.name(AGENT_ID);
+        out.value(stat.getAgentId());
+        out.name(CHARACTERS_READ);
+        writeLong(out, stat.getCharactersRead());
+        out.name(CHARACTERS_WRITTEN);
+        writeLong(out, stat.getCharactersWritten());
+        out.name(READ_SYSCALLS);
+        writeLong(out, stat.getReadSyscalls());
+        out.name(WRITE_SYSCALLS);
+        writeLong(out, stat.getWriteSyscalls());
+        out.endObject();
+    }
+
+    public void writeLong(JsonWriter out, long value) throws IOException {
+        out.beginObject();
+        out.name(TYPE_LONG);
+        out.value(String.valueOf(value));
+        out.endObject();
+    }
+
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/vm-io/common/src/test/java/com/redhat/thermostat/vm/io/common/internal/VmIoStatTypeAdapterTest.java	Thu May 25 14:15:29 2017 -0400
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012-2017 Red Hat, Inc.
+ *
+ * This file is part of Thermostat.
+ *
+ * Thermostat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * Thermostat is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Thermostat; see the file COPYING.  If not see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Linking this code with other modules is making a combined work
+ * based on this code.  Thus, the terms and conditions of the GNU
+ * General Public License cover the whole combination.
+ *
+ * As a special exception, the copyright holders of this code give
+ * you permission to link this code with independent modules to
+ * produce an executable, regardless of the license terms of these
+ * independent modules, and to copy and distribute the resulting
+ * executable under terms of your choice, provided that you also
+ * meet, for each linked independent module, the terms and conditions
+ * of the license of that module.  An independent module is a module
+ * which is not derived from or based on this code.  If you modify
+ * this code, you may extend this exception to your version of the
+ * library, but you are not obligated to do so.  If you do not wish
+ * to do so, delete this exception statement from your version.
+ */
+
+package com.redhat.thermostat.vm.io.common.internal;
+
+import com.google.gson.GsonBuilder;
+import com.google.gson.Gson;
+import com.redhat.thermostat.vm.io.common.VmIoStat;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class VmIoStatTypeAdapterTest {
+
+    @Test
+    public void testWrite() {
+        GsonBuilder builder = new GsonBuilder();
+        builder.registerTypeAdapter(VmIoStat.class, new VmIoStatTypeAdapter());
+        Gson gson = builder.create();
+        VmIoStat stat = new VmIoStat();
+        stat.setTimeStamp(100l);
+        stat.setAgentId("AGENT-1");
+        stat.setVmId("VM-1");
+        stat.setCharactersRead(2000l);
+        stat.setCharactersWritten(1000l);
+        stat.setReadSyscalls(30l);
+        stat.setWriteSyscalls(40l);
+        assertEquals("{\"timeStamp\":{\"$numberLong\":\"100\"},\"vmId\":\"VM-1\",\"agentId\":\"AGENT-1\",\"charactersRead\":{\"$numberLong\":\"2000\"},\"charactersWritten\":{\"$numberLong\":\"1000\"},\"readSyscalls\":{\"$numberLong\":\"30\"},\"writeSyscalls\":{\"$numberLong\":\"40\"}}", gson.toJson(stat));
+    }
+
+}