feat: migrated the past project to the sunfish repo

13 files changed, 1300 insertions, 0 deletions

diff --git a/opendc-common/src/main/java/org/opendc/common/ProtobufMetrics.java b/opendc-common/src/main/java/org/opendc/common/ProtobufMetrics.java
new file mode 100644
index 00000000..c0f15f63
--- /dev/null
+++ b/opendc-common/src/main/java/org/opendc/common/ProtobufMetrics.java
@@ -0,0 +1,950 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// NO CHECKED-IN PROTOBUF GENCODE
+// source: schema.proto
+// Protobuf Java Version: 4.35.0
+
+package org.opendc.common;
+
+@com.google.protobuf.Generated
+public final class ProtobufMetrics extends com.google.protobuf.GeneratedFile {
+  private ProtobufMetrics() {}
+  static {
+    com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+      com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+      /* major= */ 4,
+      /* minor= */ 35,
+      /* patch= */ 0,
+      /* suffix= */ "",
+      "ProtobufMetrics");
+  }
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  public interface ProtoExportOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:proto.ProtoExport)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string timestamp = 1;</code>
+     * @return The timestamp.
+     */
+    java.lang.String getTimestamp();
+    /**
+     * <code>string timestamp = 1;</code>
+     * @return The bytes for timestamp.
+     */
+    com.google.protobuf.ByteString
+        getTimestampBytes();
+
+    /**
+     * <code>string host_id = 2;</code>
+     * @return The hostId.
+     */
+    java.lang.String getHostId();
+    /**
+     * <code>string host_id = 2;</code>
+     * @return The bytes for hostId.
+     */
+    com.google.protobuf.ByteString
+        getHostIdBytes();
+
+    /**
+     * <code>int32 tasksactive = 3;</code>
+     * @return The tasksactive.
+     */
+    int getTasksactive();
+
+    /**
+     * <code>double cpuutilization = 4;</code>
+     * @return The cpuutilization.
+     */
+    double getCpuutilization();
+
+    /**
+     * <code>double energyusage = 5;</code>
+     * @return The energyusage.
+     */
+    double getEnergyusage();
+  }
+  /**
+   * Protobuf type {@code proto.ProtoExport}
+   */
+  public static final class ProtoExport extends
+      com.google.protobuf.GeneratedMessage implements
+      // @@protoc_insertion_point(message_implements:proto.ProtoExport)
+      ProtoExportOrBuilder {
+  private static final long serialVersionUID = 0L;
+    static {
+      com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
+        com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
+        /* major= */ 4,
+        /* minor= */ 35,
+        /* patch= */ 0,
+        /* suffix= */ "",
+        "ProtoExport");
+    }
+    // Use ProtoExport.newBuilder() to construct.
+    private ProtoExport(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+    }
+    private ProtoExport() {
+      timestamp_ = "";
+      hostId_ = "";
+    }
+
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.opendc.common.ProtobufMetrics.internal_static_proto_ProtoExport_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return org.opendc.common.ProtobufMetrics.internal_static_proto_ProtoExport_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.opendc.common.ProtobufMetrics.internal_static_proto_ProtoExport_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.opendc.common.ProtobufMetrics.ProtoExport.class, org.opendc.common.ProtobufMetrics.ProtoExport.Builder.class);
+    }
+
+    public static final int TIMESTAMP_FIELD_NUMBER = 1;
+    @SuppressWarnings("serial")
+    private volatile java.lang.Object timestamp_ = "";
+    /**
+     * <code>string timestamp = 1;</code>
+     * @return The timestamp.
+     */
+    @java.lang.Override
+    public java.lang.String getTimestamp() {
+      java.lang.Object ref = timestamp_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        timestamp_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string timestamp = 1;</code>
+     * @return The bytes for timestamp.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString
+        getTimestampBytes() {
+      java.lang.Object ref = timestamp_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        timestamp_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int HOST_ID_FIELD_NUMBER = 2;
+    @SuppressWarnings("serial")
+    private volatile java.lang.Object hostId_ = "";
+    /**
+     * <code>string host_id = 2;</code>
+     * @return The hostId.
+     */
+    @java.lang.Override
+    public java.lang.String getHostId() {
+      java.lang.Object ref = hostId_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        hostId_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string host_id = 2;</code>
+     * @return The bytes for hostId.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString
+        getHostIdBytes() {
+      java.lang.Object ref = hostId_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        hostId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int TASKSACTIVE_FIELD_NUMBER = 3;
+    private int tasksactive_ = 0;
+    /**
+     * <code>int32 tasksactive = 3;</code>
+     * @return The tasksactive.
+     */
+    @java.lang.Override
+    public int getTasksactive() {
+      return tasksactive_;
+    }
+
+    public static final int CPUUTILIZATION_FIELD_NUMBER = 4;
+    private double cpuutilization_ = 0D;
+    /**
+     * <code>double cpuutilization = 4;</code>
+     * @return The cpuutilization.
+     */
+    @java.lang.Override
+    public double getCpuutilization() {
+      return cpuutilization_;
+    }
+
+    public static final int ENERGYUSAGE_FIELD_NUMBER = 5;
+    private double energyusage_ = 0D;
+    /**
+     * <code>double energyusage = 5;</code>
+     * @return The energyusage.
+     */
+    @java.lang.Override
+    public double getEnergyusage() {
+      return energyusage_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!com.google.protobuf.GeneratedMessage.isStringEmpty(timestamp_)) {
+        com.google.protobuf.GeneratedMessage.writeString(output, 1, timestamp_);
+      }
+      if (!com.google.protobuf.GeneratedMessage.isStringEmpty(hostId_)) {
+        com.google.protobuf.GeneratedMessage.writeString(output, 2, hostId_);
+      }
+      if (tasksactive_ != 0) {
+        output.writeInt32(3, tasksactive_);
+      }
+      if (java.lang.Double.doubleToRawLongBits(cpuutilization_) != 0) {
+        output.writeDouble(4, cpuutilization_);
+      }
+      if (java.lang.Double.doubleToRawLongBits(energyusage_) != 0) {
+        output.writeDouble(5, energyusage_);
+      }
+      getUnknownFields().writeTo(output);
+    }
+    private int computeSerializedSize_0() {
+      int size = 0;
+      if (!com.google.protobuf.GeneratedMessage.isStringEmpty(timestamp_)) {
+        size += com.google.protobuf.GeneratedMessage.computeStringSize(1, timestamp_);
+      }
+      if (!com.google.protobuf.GeneratedMessage.isStringEmpty(hostId_)) {
+        size += com.google.protobuf.GeneratedMessage.computeStringSize(2, hostId_);
+      }
+      if (tasksactive_ != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(3, tasksactive_);
+      }
+      if (java.lang.Double.doubleToRawLongBits(cpuutilization_) != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeDoubleSize(4, cpuutilization_);
+      }
+      if (java.lang.Double.doubleToRawLongBits(energyusage_) != 0) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeDoubleSize(5, energyusage_);
+      }
+      return size;
+    }
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      size += computeSerializedSize_0();
+      size += getUnknownFields().getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.opendc.common.ProtobufMetrics.ProtoExport)) {
+        return super.equals(obj);
+      }
+      org.opendc.common.ProtobufMetrics.ProtoExport other = (org.opendc.common.ProtobufMetrics.ProtoExport) obj;
+
+      if (!getTimestamp()
+          .equals(other.getTimestamp())) return false;
+      if (!getHostId()
+          .equals(other.getHostId())) return false;
+      if (getTasksactive()
+          != other.getTasksactive()) return false;
+      if (java.lang.Double.doubleToLongBits(getCpuutilization())
+          != java.lang.Double.doubleToLongBits(
+              other.getCpuutilization())) return false;
+      if (java.lang.Double.doubleToLongBits(getEnergyusage())
+          != java.lang.Double.doubleToLongBits(
+              other.getEnergyusage())) return false;
+      if (!getUnknownFields().equals(other.getUnknownFields())) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + TIMESTAMP_FIELD_NUMBER;
+      hash = (53 * hash) + getTimestamp().hashCode();
+      hash = (37 * hash) + HOST_ID_FIELD_NUMBER;
+      hash = (53 * hash) + getHostId().hashCode();
+      hash = (37 * hash) + TASKSACTIVE_FIELD_NUMBER;
+      hash = (53 * hash) + getTasksactive();
+      hash = (37 * hash) + CPUUTILIZATION_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          java.lang.Double.doubleToLongBits(getCpuutilization()));
+      hash = (37 * hash) + ENERGYUSAGE_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          java.lang.Double.doubleToLongBits(getEnergyusage()));
+      hash = (29 * hash) + getUnknownFields().hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessage
+          .parseWithIOException(PARSER, input);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessage
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessage
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessage
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessage
+          .parseWithIOException(PARSER, input);
+    }
+    public static org.opendc.common.ProtobufMetrics.ProtoExport parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessage
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(org.opendc.common.ProtobufMetrics.ProtoExport prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code proto.ProtoExport}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:proto.ProtoExport)
+        org.opendc.common.ProtobufMetrics.ProtoExportOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.opendc.common.ProtobufMetrics.internal_static_proto_ProtoExport_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.opendc.common.ProtobufMetrics.internal_static_proto_ProtoExport_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.opendc.common.ProtobufMetrics.ProtoExport.class, org.opendc.common.ProtobufMetrics.ProtoExport.Builder.class);
+      }
+
+      // Construct using org.opendc.common.ProtobufMetrics.ProtoExport.newBuilder()
+      private Builder() {
+
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        bitField0_ = 0;
+        timestamp_ = "";
+        hostId_ = "";
+        tasksactive_ = 0;
+        cpuutilization_ = 0D;
+        energyusage_ = 0D;
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.opendc.common.ProtobufMetrics.internal_static_proto_ProtoExport_descriptor;
+      }
+
+      @java.lang.Override
+      public org.opendc.common.ProtobufMetrics.ProtoExport getDefaultInstanceForType() {
+        return org.opendc.common.ProtobufMetrics.ProtoExport.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public org.opendc.common.ProtobufMetrics.ProtoExport build() {
+        org.opendc.common.ProtobufMetrics.ProtoExport result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public org.opendc.common.ProtobufMetrics.ProtoExport buildPartial() {
+        org.opendc.common.ProtobufMetrics.ProtoExport result = new org.opendc.common.ProtobufMetrics.ProtoExport(this);
+        if (bitField0_ != 0) { buildPartial0(result); }
+        onBuilt();
+        return result;
+      }
+
+      private void buildPartial0(org.opendc.common.ProtobufMetrics.ProtoExport result) {
+        int from_bitField0_ = bitField0_;
+        if (((from_bitField0_ & 0x00000001) != 0)) {
+          result.timestamp_ = timestamp_;
+        }
+        if (((from_bitField0_ & 0x00000002) != 0)) {
+          result.hostId_ = hostId_;
+        }
+        if (((from_bitField0_ & 0x00000004) != 0)) {
+          result.tasksactive_ = tasksactive_;
+        }
+        if (((from_bitField0_ & 0x00000008) != 0)) {
+          result.cpuutilization_ = cpuutilization_;
+        }
+        if (((from_bitField0_ & 0x00000010) != 0)) {
+          result.energyusage_ = energyusage_;
+        }
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.opendc.common.ProtobufMetrics.ProtoExport) {
+          return mergeFrom((org.opendc.common.ProtobufMetrics.ProtoExport)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.opendc.common.ProtobufMetrics.ProtoExport other) {
+        if (other == org.opendc.common.ProtobufMetrics.ProtoExport.getDefaultInstance()) return this;
+        if (!other.getTimestamp().isEmpty()) {
+          timestamp_ = other.timestamp_;
+          bitField0_ |= 0x00000001;
+          onChanged();
+        }
+        if (!other.getHostId().isEmpty()) {
+          hostId_ = other.hostId_;
+          bitField0_ |= 0x00000002;
+          onChanged();
+        }
+        if (other.getTasksactive() != 0) {
+          setTasksactive(other.getTasksactive());
+        }
+        if (java.lang.Double.doubleToRawLongBits(other.getCpuutilization()) != 0) {
+          setCpuutilization(other.getCpuutilization());
+        }
+        if (java.lang.Double.doubleToRawLongBits(other.getEnergyusage()) != 0) {
+          setEnergyusage(other.getEnergyusage());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        if (extensionRegistry == null) {
+          throw new java.lang.NullPointerException();
+        }
+        try {
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+          while (!done) {
+            int tag = input.readTag();
+            switch (tag) {
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+                done = true;
+                break;
+              case 10: {
+                timestamp_ = input.readStringRequireUtf8();
+                bitField0_ |= 0x00000001;
+                break;
+              } // case 10
+              case 18: {
+                hostId_ = input.readStringRequireUtf8();
+                bitField0_ |= 0x00000002;
+                break;
+              } // case 18
+              case 24: {
+                tasksactive_ = input.readInt32();
+                bitField0_ |= 0x00000004;
+                break;
+              } // case 24
+              case 33: {
+                cpuutilization_ = input.readDouble();
+                bitField0_ |= 0x00000008;
+                break;
+              } // case 33
+              case 41: {
+                energyusage_ = input.readDouble();
+                bitField0_ |= 0x00000010;
+                break;
+              } // case 41
+              default: {
+                if (!super.parseUnknownField(input, extensionRegistry, tag)) {
+                  done = true; // was an endgroup tag
+                }
+                break;
+              } // default:
+            } // switch (tag)
+          } // while (!done)
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          throw e.unwrapIOException();
+        } finally {
+          onChanged();
+        } // finally
+        return this;
+      }
+      private int bitField0_;
+
+      private java.lang.Object timestamp_ = "";
+      /**
+       * <code>string timestamp = 1;</code>
+       * @return The timestamp.
+       */
+      public java.lang.String getTimestamp() {
+        java.lang.Object ref = timestamp_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          timestamp_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string timestamp = 1;</code>
+       * @return The bytes for timestamp.
+       */
+      public com.google.protobuf.ByteString
+          getTimestampBytes() {
+        java.lang.Object ref = timestamp_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          timestamp_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string timestamp = 1;</code>
+       * @param value The timestamp to set.
+       * @return This builder for chaining.
+       */
+      public Builder setTimestamp(
+          java.lang.String value) {
+        if (value == null) { throw new NullPointerException(); }
+        timestamp_ = value;
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string timestamp = 1;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearTimestamp() {
+        timestamp_ = getDefaultInstance().getTimestamp();
+        bitField0_ = (bitField0_ & ~0x00000001);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string timestamp = 1;</code>
+       * @param value The bytes for timestamp to set.
+       * @return This builder for chaining.
+       */
+      public Builder setTimestampBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) { throw new NullPointerException(); }
+        checkByteStringIsUtf8(value);
+        timestamp_ = value;
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object hostId_ = "";
+      /**
+       * <code>string host_id = 2;</code>
+       * @return The hostId.
+       */
+      public java.lang.String getHostId() {
+        java.lang.Object ref = hostId_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          hostId_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string host_id = 2;</code>
+       * @return The bytes for hostId.
+       */
+      public com.google.protobuf.ByteString
+          getHostIdBytes() {
+        java.lang.Object ref = hostId_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          hostId_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string host_id = 2;</code>
+       * @param value The hostId to set.
+       * @return This builder for chaining.
+       */
+      public Builder setHostId(
+          java.lang.String value) {
+        if (value == null) { throw new NullPointerException(); }
+        hostId_ = value;
+        bitField0_ |= 0x00000002;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string host_id = 2;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearHostId() {
+        hostId_ = getDefaultInstance().getHostId();
+        bitField0_ = (bitField0_ & ~0x00000002);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string host_id = 2;</code>
+       * @param value The bytes for hostId to set.
+       * @return This builder for chaining.
+       */
+      public Builder setHostIdBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) { throw new NullPointerException(); }
+        checkByteStringIsUtf8(value);
+        hostId_ = value;
+        bitField0_ |= 0x00000002;
+        onChanged();
+        return this;
+      }
+
+      private int tasksactive_ ;
+      /**
+       * <code>int32 tasksactive = 3;</code>
+       * @return The tasksactive.
+       */
+      @java.lang.Override
+      public int getTasksactive() {
+        return tasksactive_;
+      }
+      /**
+       * <code>int32 tasksactive = 3;</code>
+       * @param value The tasksactive to set.
+       * @return This builder for chaining.
+       */
+      public Builder setTasksactive(int value) {
+
+        tasksactive_ = value;
+        bitField0_ |= 0x00000004;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 tasksactive = 3;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearTasksactive() {
+        bitField0_ = (bitField0_ & ~0x00000004);
+        tasksactive_ = 0;
+        onChanged();
+        return this;
+      }
+
+      private double cpuutilization_ ;
+      /**
+       * <code>double cpuutilization = 4;</code>
+       * @return The cpuutilization.
+       */
+      @java.lang.Override
+      public double getCpuutilization() {
+        return cpuutilization_;
+      }
+      /**
+       * <code>double cpuutilization = 4;</code>
+       * @param value The cpuutilization to set.
+       * @return This builder for chaining.
+       */
+      public Builder setCpuutilization(double value) {
+
+        cpuutilization_ = value;
+        bitField0_ |= 0x00000008;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>double cpuutilization = 4;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearCpuutilization() {
+        bitField0_ = (bitField0_ & ~0x00000008);
+        cpuutilization_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      private double energyusage_ ;
+      /**
+       * <code>double energyusage = 5;</code>
+       * @return The energyusage.
+       */
+      @java.lang.Override
+      public double getEnergyusage() {
+        return energyusage_;
+      }
+      /**
+       * <code>double energyusage = 5;</code>
+       * @param value The energyusage to set.
+       * @return This builder for chaining.
+       */
+      public Builder setEnergyusage(double value) {
+
+        energyusage_ = value;
+        bitField0_ |= 0x00000010;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>double energyusage = 5;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearEnergyusage() {
+        bitField0_ = (bitField0_ & ~0x00000010);
+        energyusage_ = 0D;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:proto.ProtoExport)
+    }
+
+    // @@protoc_insertion_point(class_scope:proto.ProtoExport)
+    private static final org.opendc.common.ProtobufMetrics.ProtoExport DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new org.opendc.common.ProtobufMetrics.ProtoExport();
+    }
+
+    public static org.opendc.common.ProtobufMetrics.ProtoExport getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<ProtoExport>
+        PARSER = new com.google.protobuf.AbstractParser<ProtoExport>() {
+      @java.lang.Override
+      public ProtoExport parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        Builder builder = newBuilder();
+        try {
+          builder.mergeFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          throw e.setUnfinishedMessage(builder.buildPartial());
+        } catch (com.google.protobuf.UninitializedMessageException e) {
+          throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
+        } catch (java.io.IOException e) {
+          throw new com.google.protobuf.InvalidProtocolBufferException(e)
+              .setUnfinishedMessage(builder.buildPartial());
+        }
+        return builder.buildPartial();
+      }
+    };
+
+    public static com.google.protobuf.Parser<ProtoExport> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<ProtoExport> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public org.opendc.common.ProtobufMetrics.ProtoExport getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_proto_ProtoExport_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_proto_ProtoExport_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static final com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\014schema.proto\022\005proto\"s\n\013ProtoExport\022\021\n\t" +
+      "timestamp\030\001 \001(\t\022\017\n\007host_id\030\002 \001(\t\022\023\n\013task" +
+      "sactive\030\003 \001(\005\022\026\n\016cpuutilization\030\004 \001(\001\022\023\n" +
+      "\013energyusage\030\005 \001(\001B$\n\021org.opendc.commonB" +
+      "\017ProtobufMetricsb\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        });
+    internal_static_proto_ProtoExport_descriptor =
+      getDescriptor().getMessageType(0);
+    internal_static_proto_ProtoExport_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+        internal_static_proto_ProtoExport_descriptor,
+        new java.lang.String[] { "Timestamp", "HostId", "Tasksactive", "Cpuutilization", "Energyusage", });
+    descriptor.resolveAllFeaturesImmutable();
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/annotations/Endpoint.kt b/opendc-common/src/main/kotlin/org/opendc/common/annotations/Endpoint.kt
new file mode 100644
index 00000000..4ef08a71
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/annotations/Endpoint.kt
@@ -0,0 +1,6 @@
+package org.opendc.common.annotations
+
+@RequiresOptIn(message = "This is a registered API endpoint.")
+@Retention(AnnotationRetention.BINARY)
+@Target(AnnotationTarget.CLASS, AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY, AnnotationTarget.CONSTRUCTOR)
+public annotation class Endpoint(val method: String, val name : String)
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/api/AssetsController.kt b/opendc-common/src/main/kotlin/org/opendc/common/api/AssetsController.kt
new file mode 100644
index 00000000..c6f34d19
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/api/AssetsController.kt
@@ -0,0 +1,72 @@
+package org.opendc.common.api
+
+import org.opendc.common.annotations.Endpoint
+import io.javalin.http.Handler
+
+/**
+ * This class represents the `/assets` endpoint.
+ *
+ * @author Mateusz Kwiatkowski
+ *
+ * */
+
+
+//TODO: fix -> this is all wrong.
+// Sending the experiment file is completely useless.
+// You need to send tasks.parquet
+public class AssetsController {
+    /**
+     * Returns a concatenated JSON string of all assets.
+     */
+    @Endpoint("GET","/assets")
+    public fun getAssets() : Handler {
+        return Handler { ctx -> ctx.status(200)
+            println(ctx.body())
+        }
+    }
+
+    /**
+     * Returns an asset with `id` as a JSON string.
+     */
+    @Endpoint("GET", "/assets/{id}")
+    public fun getAssetsId(): Handler {
+        return Handler { ctx -> ctx.status(200) }
+    }
+
+    /**
+     * Saves the asset specified in the HTTP body.
+     * Returns the asset `id`.
+     */
+    @Endpoint("POST", "/assets")
+    public fun postAsset() : Handler {
+        return Handler { ctx -> ctx.status(200)
+            println(ctx.body())
+        }
+    }
+
+    /**
+     * Modifies the specified asset.
+     * Deletes all results from experiments with this asset.
+     */
+    @Endpoint("PUT", "/assets/{id}")
+    public fun putAssetId() : Handler {
+        return Handler { ctx -> ctx.status(200) }
+    }
+
+    /**
+     * Deletes an asset with `id`.
+     * Deletes all results from experiments with this asset.
+     */
+    @Endpoint("DELETE", "/assets/{id}")
+    public fun deleteAssetId() : Handler {
+        return Handler { ctx -> ctx.status(200) }
+    }
+
+    /**
+     * Deletes all assets
+     */
+    @Endpoint("DELETE", "/assets")
+    public fun deleteAsset() : Handler {
+        return Handler { ctx -> ctx.status(200) }
+    }
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/api/ResourceController.kt b/opendc-common/src/main/kotlin/org/opendc/common/api/ResourceController.kt
new file mode 100644
index 00000000..cf1d3cac
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/api/ResourceController.kt
@@ -0,0 +1,30 @@
+package org.opendc.common.api
+
+import org.opendc.common.annotations.Endpoint
+
+/**
+ * This class represents the `/resources` endpoint.
+ *
+ * @author Mateusz Kwiatkowski
+ *
+ * */
+
+public class ResourceController {
+
+    /**
+     * Returns all data analytics for all experiments.
+     */
+    @Endpoint("GET", "/resources")
+    public fun getResources() {
+        return
+    }
+
+    /**
+     * Returns data analytics for experiment with `id`.
+     *
+     * */
+    @Endpoint("GET", "/resources")
+    public fun getResourcesId() {
+        return
+    }
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/utils/HTTPClient.kt b/opendc-common/src/main/kotlin/org/opendc/common/utils/HTTPClient.kt
new file mode 100644
index 00000000..fc5bc57b
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/utils/HTTPClient.kt
@@ -0,0 +1,46 @@
+package org.opendc.common.utils
+
+import java.io.File
+import java.io.InputStreamReader
+import java.net.URI
+import java.net.http.*
+import java.net.http.HttpResponse.BodyHandlers.ofString
+
+/**
+ * Singleton class representing the real datacenter client.
+ * The client is asynchronous and initiates the connection first.
+ *
+ * @author Mateusz Kwiatkowski
+ */
+
+public class HTTPClient private constructor() {
+    public companion object {
+        private var instance: HTTPClient? = null
+        private var client = HttpClient.newBuilder().build()
+
+        public fun getInstance(): HTTPClient? {
+            if (instance == null) {
+                instance = HTTPClient()
+            }
+            return instance
+        }
+    }
+
+    // TODO: this class must send the experiment JSON file to the digital twin
+    public fun sendExperiment(experiment: File) {
+        val input =  experiment.inputStream()
+        val charArray = CharArray(experiment.length().toInt())
+        val isr = InputStreamReader(input)
+
+        isr.read(charArray)
+
+        val request = HttpRequest.newBuilder()
+            .uri(URI.create("http://localhost:8080/assets"))
+            .header("Content-type", "application/json")
+            // TODO: this is obviously wrong, find an efficient way to send JSON over network
+            .POST(HttpRequest.BodyPublishers.ofString(String(charArray)))
+            .build()
+        val response = client?.send(request, ofString())
+        check(response?.statusCode() == 200)
+    }
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/utils/JavalinRunner.kt b/opendc-common/src/main/kotlin/org/opendc/common/utils/JavalinRunner.kt
new file mode 100644
index 00000000..23baac27
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/utils/JavalinRunner.kt
@@ -0,0 +1,33 @@
+package org.opendc.common.utils
+
+import io.javalin.Javalin
+import org.opendc.common.annotations.Endpoint
+import org.opendc.common.api.AssetsController
+
+/**
+ * Represents the digital twin monitoring server.
+ * For endpoint documentation see `AssetsController`.
+ * @author Mateusz Kwiatkowski
+ * @see <a href=https://javalin.io/documentation>https://javalin.io/documentation</a>
+ * @see org.opendc.common.api.AssetsController
+ */
+
+@OptIn(Endpoint::class)
+public class JavalinRunner {
+    private val assetsController : AssetsController = AssetsController()
+
+    init {
+        val app = Javalin.create().start()
+        app.get("/assets", assetsController.getAssets())
+
+        app.get("/assets/{id}", assetsController.getAssetsId())
+
+        app.post("/assets", assetsController.postAsset())
+
+        app.put("/assets/{id}", assetsController.putAssetId())
+
+        app.delete("/assets/{id}", assetsController.deleteAssetId())
+
+        app.delete("/assets", assetsController.deleteAsset())
+    }
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/utils/Kafka.kt b/opendc-common/src/main/kotlin/org/opendc/common/utils/Kafka.kt
new file mode 100644
index 00000000..81eb6752
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/utils/Kafka.kt
@@ -0,0 +1,38 @@
+package org.opendc.common.utils
+
+import com.fasterxml.jackson.dataformat.toml.TomlMapper
+import org.apache.kafka.clients.producer.KafkaProducer
+import org.apache.kafka.clients.producer.ProducerRecord
+import org.opendc.common.ProtobufMetrics
+import java.util.*
+/**
+ * Represents the Kafka interface.
+ * @constructor `topic` the Kafka topic
+ * @author Mateusz Kwiatkowski
+ * @see <a href=https://kafka.apache.org/23/javadoc/org/apache/kafka/clients/producer/KafkaProducer.html>
+ *     https://kafka.apache.org/23/javadoc/org/apache/kafka/clients/producer/KafkaProducer.html</a>
+ * @see <a href=https://kafka.apache.org/23/javadoc/org/apache/kafka/clients/consumer/KafkaConsumer.html>
+ *      https://kafka.apache.org/23/javadoc/org/apache/kafka/clients/consumer/KafkaConsumer.html</a>
+ */
+
+@Suppress("DEPRECATION")
+public class Kafka(private val topic: String) {
+    private var properties : Properties
+
+    init {
+        check(!topic.contains("-"))
+        properties  = TomlMapper().readerFor(Properties().javaClass)
+            .readValue(Kafka::class.java.getResource("/producer.toml"))
+    }
+
+    public fun getSend() : (ProtobufMetrics.ProtoExport) -> Unit {
+        val producer = KafkaProducer<String, ProtobufMetrics.ProtoExport>(properties)
+        return fun (value : ProtobufMetrics.ProtoExport) {
+            try {
+                producer.send(ProducerRecord(this.topic, value))
+            } catch (e: Exception) {
+                println("${e.message}")
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/utils/PostgresqlDB.kt b/opendc-common/src/main/kotlin/org/opendc/common/utils/PostgresqlDB.kt
new file mode 100644
index 00000000..35d03feb
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/utils/PostgresqlDB.kt
@@ -0,0 +1,52 @@
+package org.opendc.common.utils
+
+import com.fasterxml.jackson.dataformat.toml.TomlMapper
+import java.sql.Connection
+import java.sql.DriverManager
+import java.sql.SQLException
+import java.util.Properties
+/**
+ * Represents the Postgresql database.
+ * On setup cleans the entire database.
+ *
+ * @author Mateusz Kwiatkowski
+ *
+ * @see <a href=https://docs.oracle.com/en/java/javase/21/docs/api/java.sql/java/sql/DriverManager.html>
+ *     https://docs.oracle.com/en/java/javase/21/docs/api/java.sql/java/sql/DriverManager.html</a>
+ */
+@Suppress("DEPRECATION")
+public class PostgresqlDB {
+    private var properties = Properties()
+    private var connection : Connection? = null
+
+    init {
+        try {
+            properties  = TomlMapper().readerFor(Properties().javaClass)
+                .readValue(PostgresqlDB::class.java.getResource("/database.toml"))
+            connection = DriverManager.getConnection(
+                properties.getProperty("address").asJdbc(properties.getProperty("database")),
+                properties.getProperty("user"),
+                properties.getProperty("password"))
+            clear()
+        } catch (e: SQLException) {
+            print("${e.message}")
+        }
+    }
+    public fun clear(){
+        val DELETE_ALL_TABLES = """
+            DROP SCHEMA public CASCADE;
+            CREATE SCHEMA public;
+        """.trimIndent()
+        try {
+            val st = connection?.createStatement()
+            st?.executeQuery(DELETE_ALL_TABLES)
+        } catch (e: SQLException){
+            println("${e.message}")
+        }
+    }
+
+    private fun String.asJdbc(database : String) : String {
+        return "jdbc:postgresql://$this/$database"
+    }
+
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/kotlin/org/opendc/common/utils/Redis.kt b/opendc-common/src/main/kotlin/org/opendc/common/utils/Redis.kt
new file mode 100644
index 00000000..b659d40a
--- /dev/null
+++ b/opendc-common/src/main/kotlin/org/opendc/common/utils/Redis.kt
@@ -0,0 +1,43 @@
+package org.opendc.common.utils
+
+import com.fasterxml.jackson.dataformat.toml.TomlMapper
+import redis.clients.jedis.RedisClient
+import redis.clients.jedis.StreamEntryID
+import redis.clients.jedis.params.XReadParams
+import java.util.Properties
+
+/**
+ * This class represents the Redis server instance.
+ * @author Mateusz Kwiatkowski
+ * @see <a href=https://redis.io/docs/latest/>https://redis.io/docs/latest/</a>
+ *
+ * @see <a href=https://redis.io/docs/latest/develop/data-types/streams/>https://redis.io/docs/latest/develop/data-types/streams/</a>
+ */
+
+@Suppress("DEPRECATION")
+public class Redis {
+    private var properties : Properties
+
+    init {
+        properties  = TomlMapper().readerFor(Properties().javaClass)
+            .readValue(Kafka::class.java.getResource("/producer.toml"))
+    }
+
+        public fun run() {
+            val jedis : RedisClient = RedisClient.create("redis://localhost:6379")
+
+            val res5 = jedis.xread(
+                XReadParams.xReadParams().block(300).count(100),
+                object : HashMap<String?, StreamEntryID?>() {
+                    init {
+                        put("${properties.getProperty("table")}", StreamEntryID())
+                    }
+                })
+
+            // in Redis you can subscribe to updates to a stream.
+            // you should base your application off this.
+            // you can listen for new items with XREAD
+            println(res5)
+            jedis.close()
+        }
+}
\ No newline at end of file
diff --git a/opendc-common/src/main/resources/consumer.toml b/opendc-common/src/main/resources/consumer.toml
new file mode 100644
index 00000000..0f4a2d1d
--- /dev/null
+++ b/opendc-common/src/main/resources/consumer.toml
@@ -0,0 +1,6 @@
+"bootstrap.servers" = "127.0.0.1:9092"
+"key.deserializer" = "org.apache.kafka.common.serialization.VoidDeserializer"
+"value.deserializer" = "io.confluent.kafka.serializers.protobuf.KafkaProtobufDeserializer"
+"group.id" = "connect-postgresql-sink"
+"enable.auto.commit" = "true"
+"auto.commit.interval.ms" = "1000"
diff --git a/opendc-common/src/main/resources/database.toml b/opendc-common/src/main/resources/database.toml
new file mode 100644
index 00000000..c9aaa253
--- /dev/null
+++ b/opendc-common/src/main/resources/database.toml
@@ -0,0 +1,5 @@
+"address" = "127.0.0.1:5432"
+"username" = "matt"
+"password" = "admin"
+"database" = "opendc"
+"stream" = "postgres_topic"
\ No newline at end of file
diff --git a/opendc-common/src/main/resources/producer.toml b/opendc-common/src/main/resources/producer.toml
new file mode 100644
index 00000000..8202e93b
--- /dev/null
+++ b/opendc-common/src/main/resources/producer.toml
@@ -0,0 +1,5 @@
+"bootstrap.servers" = "127.0.0.1:9092"
+"key.serializer" = "org.apache.kafka.common.serialization.VoidSerializer"
+"value.serializer" = "io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializer"
+"schema.registry.url" = "http://localhost:8081"
+"auto.register.schemas" = "true"
diff --git a/opendc-common/src/main/resources/schema.proto b/opendc-common/src/main/resources/schema.proto
new file mode 100644
index 00000000..d0aa18d5
--- /dev/null
+++ b/opendc-common/src/main/resources/schema.proto
@@ -0,0 +1,14 @@
+syntax = "proto3";
+
+package proto;
+
+option java_package = "org.opendc.common";
+option java_outer_classname = "ProtobufMetrics";
+
+message ProtoExport {
+  string timestamp = 1;
+  string host_id = 2;
+  int32 tasksactive = 3;
+  double cpuutilization = 4;
+  double energyusage = 5;
+}
\ No newline at end of file