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commit 72a388d2a65db187b47a60c3f314b573d974e05a
Author: Benoit Tellier <btell...@linagora.com>
AuthorDate: Tue Mar 10 17:31:53 2020 +0700
JAMES-3111 Use a retry policy to decrease consistency level when All
---
.../backends/cassandra/init/ClusterFactory.java | 1 +
.../init/NotConsistencyAllRetryPolicy.java | 69 ++++++++++++++++++++++
2 files changed, 70 insertions(+)
diff --git
a/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/ClusterFactory.java
b/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/ClusterFactory.java
index a6bfc9e..350f8be 100644
---
a/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/ClusterFactory.java
+++
b/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/ClusterFactory.java
@@ -52,6 +52,7 @@ public class ClusterFactory {
socketOptions.setReadTimeoutMillis(configuration.getReadTimeoutMillis());
socketOptions.setConnectTimeoutMillis(configuration.getConnectTimeoutMillis());
clusterBuilder.withSocketOptions(socketOptions);
+ clusterBuilder.withRetryPolicy(new NotConsistencyAllRetryPolicy());
configuration.getPoolingOptions().ifPresent(clusterBuilder::withPoolingOptions);
if (configuration.useSsl()) {
diff --git
a/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/NotConsistencyAllRetryPolicy.java
b/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/NotConsistencyAllRetryPolicy.java
new file mode 100644
index 0000000..890e35e
--- /dev/null
+++
b/backends-common/cassandra/src/main/java/org/apache/james/backends/cassandra/init/NotConsistencyAllRetryPolicy.java
@@ -0,0 +1,69 @@
+/****************************************************************
+ * 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.james.backends.cassandra.init;
+
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.ConsistencyLevel;
+import com.datastax.driver.core.Statement;
+import com.datastax.driver.core.WriteType;
+import com.datastax.driver.core.exceptions.DriverException;
+import com.datastax.driver.core.policies.DefaultRetryPolicy;
+import com.datastax.driver.core.policies.RetryPolicy;
+
+public class NotConsistencyAllRetryPolicy implements RetryPolicy {
+ @Override
+ public RetryDecision onReadTimeout(Statement statement, ConsistencyLevel
cl, int requiredResponses, int receivedResponses, boolean dataRetrieved, int
nbRetry) {
+ if (cl == ConsistencyLevel.ALL) {
+ return RetryDecision.retry(ConsistencyLevel.QUORUM);
+ }
+ return DefaultRetryPolicy.INSTANCE.onReadTimeout(statement, cl,
requiredResponses, receivedResponses, dataRetrieved, nbRetry);
+ }
+
+ @Override
+ public RetryDecision onWriteTimeout(Statement statement, ConsistencyLevel
cl, WriteType writeType, int requiredAcks, int receivedAcks, int nbRetry) {
+ if (cl == ConsistencyLevel.ALL) {
+ return RetryDecision.retry(ConsistencyLevel.QUORUM);
+ }
+ return DefaultRetryPolicy.INSTANCE.onWriteTimeout(statement, cl,
writeType, requiredAcks, receivedAcks, nbRetry);
+ }
+
+ @Override
+ public RetryDecision onUnavailable(Statement statement, ConsistencyLevel
cl, int requiredReplica, int aliveReplica, int nbRetry) {
+ if (cl == ConsistencyLevel.ALL) {
+ return RetryDecision.retry(ConsistencyLevel.QUORUM);
+ }
+ return DefaultRetryPolicy.INSTANCE.onUnavailable(statement, cl,
requiredReplica, aliveReplica, nbRetry);
+ }
+
+ @Override
+ public RetryDecision onRequestError(Statement statement, ConsistencyLevel
cl, DriverException e, int nbRetry) {
+ return DefaultRetryPolicy.INSTANCE.onRequestError(statement, cl, e,
nbRetry);
+ }
+
+ @Override
+ public void init(Cluster cluster) {
+
+ }
+
+ @Override
+ public void close() {
+
+ }
+}
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