SLING-8346 - Import Journal based Sling Content Distribution source code
This project contains Protocol Buffers message definition for the `org.apache.sling.distribution.journal` module.
Initial contributors
* Timothee Maret @tmaret
* Christian Schneider @cschneider
* Marius Petria @mpetria
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/README.md b/README.md
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+++ b/README.md
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+org.apache.sling.distribution.journal.messages
+===============================================
+
+Project containing the [Protocol Buffers](https://developers.google.com/protocol-buffers) message definition for the `distribution.journal` module.
\ No newline at end of file
diff --git a/bnd.bnd b/bnd.bnd
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+++ b/bnd.bnd
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+Export-Package: org.apache.sling.distribution.journal.messages
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
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--- /dev/null
+++ b/pom.xml
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+<?xml version="1.0"?>
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <!-- ======================================================================= -->
+ <!-- P A R E N T P R O J E C T -->
+ <!-- ======================================================================= -->
+ <parent>
+ <groupId>org.apache.sling</groupId>
+ <artifactId>sling</artifactId>
+ <version>34</version>
+ <relativePath />
+ </parent>
+
+ <!-- ======================================================================= -->
+ <!-- P R O J E C T -->
+ <!-- ======================================================================= -->
+ <artifactId>org.apache.sling.distribution.journal.messages</artifactId>
+ <version>0.0.1-INCUBATOR-SNAPSHOT</version>
+
+ <name>Apache Sling Journal based Content Distribution - Messages bundle</name>
+ <description>Implementation of the messages to support Apache Sling Content Distribution on top of an append-only persisted log</description>
+
+ <properties>
+ <sling.java.version>8</sling.java.version>
+ </properties>
+
+ <scm/>
+
+ <!-- ======================================================================= -->
+ <!-- B U I L D -->
+ <!-- ======================================================================= -->
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <version>3.5.0</version>
+ <extensions>true</extensions>
+ </plugin>
+ <plugin>
+ <groupId>com.github.os72</groupId>
+ <artifactId>protoc-jar-maven-plugin</artifactId>
+ <version>3.5.1.1</version>
+ <executions>
+ <execution>
+ <phase>generate-sources</phase>
+ <goals>
+ <goal>run</goal>
+ </goals>
+ <configuration>
+ <protocVersion>2.5.0</protocVersion>
+ <outputTargets>
+ <outputTarget>
+ <type>java</type>
+ <addSources>true</addSources>
+ <outputDirectory>target/generated-sources/protoc-jar</outputDirectory>
+ </outputTarget>
+ </outputTargets>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </build>
+
+ <!-- ======================================================================= -->
+ <!-- D E P E N D E N C I E S -->
+ <!-- ======================================================================= -->
+ <dependencies>
+ <dependency>
+ <groupId>com.google.protobuf</groupId>
+ <artifactId>protobuf-java</artifactId>
+ <version>3.7.0</version>
+ </dependency>
+
+ <!-- Test -->
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit</artifactId>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.servicemix.bundles</groupId>
+ <artifactId>org.apache.servicemix.bundles.hamcrest</artifactId>
+ <version>1.3_1</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+</project>
diff --git a/src/main/java/org/apache/sling/distribution/journal/messages/PackageDistributedMessage.java b/src/main/java/org/apache/sling/distribution/journal/messages/PackageDistributedMessage.java
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index 0000000..b26dea6
--- /dev/null
+++ b/src/main/java/org/apache/sling/distribution/journal/messages/PackageDistributedMessage.java
@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.sling.distribution.journal.messages;
+
+public class PackageDistributedMessage {
+
+ public String pubAgentName;
+
+ public String packageId;
+
+ public String[] deepPaths;
+
+ public String[] paths;
+
+ public long offset;
+}
diff --git a/src/main/java/org/apache/sling/distribution/journal/messages/Types.java b/src/main/java/org/apache/sling/distribution/journal/messages/Types.java
new file mode 100644
index 0000000..f49a103
--- /dev/null
+++ b/src/main/java/org/apache/sling/distribution/journal/messages/Types.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.sling.distribution.journal.messages;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Types {
+ private static Map<Class<?>, Integer> types = new HashMap<>();
+ static {
+ types.put(Messages.DiscoveryMessage.class, 1);
+ types.put(Messages.PackageMessage.class, 2);
+ types.put(Messages.PackageStatusMessage.class, 3);
+ types.put(Messages.CommandMessage.class, 4);
+ types.put(Messages.PingMessage.class, 5);
+ }
+
+ public static Class<?> getType(int type, int version) {
+ for (Class<?> clazz : types.keySet()) {
+ Integer cType = types.get(clazz);
+ if (cType == type && version == 1) {
+ return clazz;
+ }
+ }
+ throw new IllegalArgumentException(String.format("Unknown type %d and version %d", type, version));
+ }
+
+ public static Integer getType(Class<?> clazz) {
+ return types.get(clazz);
+ }
+
+ public static Integer getVersion(Class<?> clazz) {
+ return 1;
+ }
+}
diff --git a/src/main/protobuf/messages.proto b/src/main/protobuf/messages.proto
new file mode 100644
index 0000000..e8dba7d
--- /dev/null
+++ b/src/main/protobuf/messages.proto
@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.sling.distribution.journal.messages;
+
+message PackageMessage {
+ enum ReqType {
+ ADD = 0;
+ DELETE = 1;
+ TEST = 2;
+ }
+ required string pubSlingId = 1; // Publisher agent Sling identifier
+ //required int32 maxRetries = 9;
+ required ReqType reqType = 4; // The request type
+ required string pkgId = 3; // Content package identifier
+ required string pkgType = 11; // The package type
+ optional int64 pkgLength = 5;
+ optional bytes pkgBinary = 6; // The content package binary. Either the pkgBinary or the pkgBinaryRef field MUST be set.
+ optional string pkgBinaryRef = 10; // The reference to the content binary in the shared blob store. Either the pkgBinary or the pkgBinaryRef field MUST be set.
+ optional string pubAgentName = 2; // Publisher agent name
+ optional string userId = 12;
+ repeated string paths = 7;
+ repeated string deepPaths = 8;
+}
+
+message PackageStatusMessage {
+ enum Status {
+ REMOVED_FAILED = 0; // The package has been removed automatically after failing every retry attempts
+ REMOVED = 1; // The package has been removed explicitly
+ IMPORTED = 2; // The package has been imported
+ }
+ required string subSlingId = 1; // Subscriber agent Sling identifier
+ required string subAgentName = 2; // Subscriber agent name
+ required string pubAgentName = 3; // Publisher agent name
+ required int64 offset = 4; // The offset of the package for which the status is given
+ required Status status = 5; // The package status
+}
+
+
+message SubscriberState {
+ required string pubAgentName = 1; // Publisher agent name
+ required int64 offset = 2; // Last processed offset on the Subscriber agent
+ optional int32 retries = 3; // Nb of retries for the current offset on the Subscriber agent
+}
+
+message SubscriberConfiguration {
+ required bool editable = 1;
+ required int32 maxRetries = 2; // The max number of retry attempts to process this package. A value smaller than zero indicates an infinite number of retry attempts. A value greater or equal to zero indicates a specific number of retry attempts.
+}
+
+message DiscoveryMessage {
+ required string subSlingId = 1; // Subscriber agent Sling identifier
+ required string subAgentName = 2; // Subscriber agent name
+ repeated SubscriberState subscriberState = 3;
+ required SubscriberConfiguration subscriberConfiguration = 4;
+}
+
+message ClearCommand {
+ required int64 offset = 1;
+}
+
+message CommandMessage {
+ required string subSlingId = 1; // Subscriber agent Sling identifier
+ required string subAgentName = 2; // Subscriber agent name
+ optional ClearCommand clearCommand = 3;
+}
+
+message PingMessage {
+}
diff --git a/src/test/java/org/apache/sling/distribution/journal/messages/SerTest.java b/src/test/java/org/apache/sling/distribution/journal/messages/SerTest.java
new file mode 100644
index 0000000..b093c34
--- /dev/null
+++ b/src/test/java/org/apache/sling/distribution/journal/messages/SerTest.java
@@ -0,0 +1,87 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.sling.distribution.journal.messages;
+
+import static org.apache.sling.distribution.journal.messages.Messages.SubscriberConfiguration;
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertThat;
+
+import java.lang.reflect.Method;
+
+import org.junit.Test;
+
+import org.apache.sling.distribution.journal.messages.Messages.DiscoveryMessage;
+import org.apache.sling.distribution.journal.messages.Messages.DiscoveryMessageOrBuilder;
+import org.apache.sling.distribution.journal.messages.Messages.SubscriberState;
+import org.apache.sling.distribution.journal.messages.Messages.SubscriberStateOrBuilder;
+import com.google.protobuf.ByteString;
+import com.google.protobuf.ExtensionRegistryLite;
+import com.google.protobuf.GeneratedMessage;
+import com.google.protobuf.InvalidProtocolBufferException;
+
+public class SerTest {
+
+ @Test
+ public void test() throws InvalidProtocolBufferException {
+ DiscoveryMessage discoveryMsg = createMessage();
+ byte[] messageBytes = discoveryMsg.toByteArray();
+
+ ExtensionRegistryLite registry = ExtensionRegistryLite.newInstance();
+ DiscoveryMessageOrBuilder messageIn = DiscoveryMessage.parseFrom(messageBytes, registry);
+ checkMessage(messageIn);
+
+ }
+
+ @Test
+ public void testFromClass() throws Exception {
+ DiscoveryMessage discoveryMsg = createMessage();
+ ByteString byteString = discoveryMsg.toByteString();
+
+ ExtensionRegistryLite registry = ExtensionRegistryLite.newInstance();
+ Class<? extends GeneratedMessage> type = DiscoveryMessage.class;
+ Method method = type.getMethod("parseFrom", ByteString.class, ExtensionRegistryLite.class);
+ DiscoveryMessage messageIn = (DiscoveryMessage) method.invoke(null, byteString, registry);
+ checkMessage(messageIn);
+ }
+
+ private DiscoveryMessage createMessage() {
+ DiscoveryMessage discoveryMsg = DiscoveryMessage.newBuilder()
+ .setSubSlingId("subscribersling1")
+ .setSubAgentName("subscriber1")
+ .setSubscriberConfiguration(SubscriberConfiguration
+ .newBuilder()
+ .setEditable(false)
+ .setMaxRetries(-1)
+ .build())
+ .addSubscriberState(SubscriberState
+ .newBuilder()
+ .setPubAgentName("publisher1")
+ .setOffset(10).build())
+ .build();
+ return discoveryMsg;
+ }
+
+ private void checkMessage(DiscoveryMessageOrBuilder messageIn) {
+ assertThat(messageIn.getSubSlingId(), equalTo("subscribersling1"));
+ assertThat(messageIn.getSubAgentName(), equalTo("subscriber1"));
+ SubscriberStateOrBuilder offset = messageIn.getSubscriberStateList().iterator().next();
+ assertThat(offset.getPubAgentName(), equalTo("publisher1"));
+ assertThat(offset.getOffset(), equalTo(10l));
+ }
+}
