andresbeckruiz commented on code in PR #339: URL: https://github.com/apache/cassandra-sidecar/pull/339#discussion_r3250500100
########## server/src/main/java/org/apache/cassandra/sidecar/db/schema/ClusterOpsNodeStateSchema.java: ########## @@ -0,0 +1,129 @@ +/* + * 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.cassandra.sidecar.db.schema; + +import com.datastax.driver.core.PreparedStatement; +import com.datastax.driver.core.Session; +import org.apache.cassandra.sidecar.common.server.utils.SecondBoundConfiguration; +import org.apache.cassandra.sidecar.config.SchemaKeyspaceConfiguration; +import org.jetbrains.annotations.NotNull; + +/** + * Schema for the {@code cluster_ops_node_state} table, which tracks the status of an operation for a given node. + * Sidecar instances query this table to check the status of nodes being operated on before their local nodes, + * enabling distributed coordination of cluster-wide operations. + */ +public class ClusterOpsNodeStateSchema extends TableSchema +{ + private static final String TABLE_NAME = "cluster_ops_node_state"; + + private final SchemaKeyspaceConfiguration keyspaceConfig; + private final SecondBoundConfiguration tableTtl; + + private PreparedStatement insertNodeStatus; + private PreparedStatement selectNodeStatus; + private PreparedStatement selectAllNodeStatuses; + + public ClusterOpsNodeStateSchema(SchemaKeyspaceConfiguration keyspaceConfig, SecondBoundConfiguration tableTtl) + { + this.keyspaceConfig = keyspaceConfig; + this.tableTtl = tableTtl; + } + + @Override + protected String keyspaceName() + { + return keyspaceConfig.keyspace(); + } + + @Override + protected String tableName() + { + return TABLE_NAME; + } + + @Override + protected String createSchemaStatement() + { + return String.format("CREATE TABLE IF NOT EXISTS %s.%s (" + + " cluster_name text," + + " operation_id uuid," + Review Comment: Changed to `timeuuid` for consistency ########## server/src/main/java/org/apache/cassandra/sidecar/db/schema/ActiveClusterOpsSchema.java: ########## @@ -0,0 +1,137 @@ +/* + * 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.cassandra.sidecar.db.schema; + +import com.datastax.driver.core.PreparedStatement; +import com.datastax.driver.core.Session; +import org.apache.cassandra.sidecar.common.server.utils.SecondBoundConfiguration; +import org.apache.cassandra.sidecar.config.SchemaKeyspaceConfiguration; +import org.jetbrains.annotations.NotNull; + +/** + * Schema for the {@code active_cluster_ops} table, which ensures that only one active operation of a given type + * is running at a time across the cluster. When a Sidecar instance receives a request to set an operation to + * {@code RUNNING}, it inserts the operation into this table using a lightweight transaction (LWT) to guarantee + * mutual exclusion. Sidecar instances also periodically query this table to discover when an operation has been + * activated. + */ +public class ActiveClusterOpsSchema extends TableSchema +{ + private static final String TABLE_NAME = "active_cluster_ops"; + + private final SchemaKeyspaceConfiguration keyspaceConfig; + private final SecondBoundConfiguration tableTtl; + + private PreparedStatement trySetActive; + private PreparedStatement getActive; + private PreparedStatement getActiveByType; + private PreparedStatement clearActive; + + public ActiveClusterOpsSchema(SchemaKeyspaceConfiguration keyspaceConfig, SecondBoundConfiguration tableTtl) + { + this.keyspaceConfig = keyspaceConfig; + this.tableTtl = tableTtl; + } + + @Override + protected String keyspaceName() + { + return keyspaceConfig.keyspace(); + } + + @Override + protected String tableName() + { + return TABLE_NAME; + } + + @Override + protected String createSchemaStatement() + { + return String.format("CREATE TABLE IF NOT EXISTS %s.%s (" + + " cluster_name text," + + " operation_type text," + + " operation_id uuid," + Review Comment: Changed to `timeuuid` for consistency -- This is an automated message from the Apache Git Service. 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