[GitHub] [inlong] Oneal65 commented on a diff in pull request #5966: [INLONG-5943][Sort] Add metric state for JDBC

[GitBox <gi...@apache.org>]

Oneal65 commented on code in PR #5966:
URL: https://github.com/apache/inlong/pull/5966#discussion_r975992045


##########
inlong-sort/sort-connectors/jdbc/src/main/java/org/apache/inlong/sort/jdbc/internal/AbstractJdbcOutputFormat.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.inlong.sort.jdbc.internal;
+
+import org.apache.flink.annotation.VisibleForTesting;
+import org.apache.flink.api.common.io.RichOutputFormat;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.connector.jdbc.internal.connection.JdbcConnectionProvider;
+import org.apache.flink.runtime.state.FunctionInitializationContext;
+import org.apache.flink.runtime.state.FunctionSnapshotContext;
+import org.apache.flink.util.Preconditions;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.Flushable;
+import java.io.IOException;
+import java.sql.Connection;
+
+/** Base jdbc outputFormat. */
+public abstract class AbstractJdbcOutputFormat<T> extends RichOutputFormat<T> implements Flushable {
+
+    private static final long serialVersionUID = 1L;
+    public static final int DEFAULT_FLUSH_MAX_SIZE = 5000;
+    public static final long DEFAULT_FLUSH_INTERVAL_MILLS = 0L;
+
+    private static final Logger LOG = LoggerFactory.getLogger(
+            org.apache.flink.connector.jdbc.internal.AbstractJdbcOutputFormat.class);
+    protected final JdbcConnectionProvider connectionProvider;
+
+    public AbstractJdbcOutputFormat(JdbcConnectionProvider connectionProvider) {
+        this.connectionProvider = Preconditions.checkNotNull(connectionProvider);
+    }
+
+    @Override
+    public void configure(Configuration parameters) {
+
+    }
+
+    @Override
+    public void open(int taskNumber, int numTasks) throws IOException {
+        try {
+            connectionProvider.getOrEstablishConnection();
+        } catch (Exception e) {
+            throw new IOException("unable to open JDBC writer", e);
+        }
+    }
+
+    @Override
+    public void close() {
+        connectionProvider.closeConnection();
+    }
+
+    @Override
+    public void flush() throws IOException {
+
+    }
+
+    @VisibleForTesting
+    public Connection getConnection() {
+        return connectionProvider.getConnection();
+    }
+
+    public void snapshotState(FunctionSnapshotContext context) throws Exception {

Review Comment:
   just declared like other methods in this class, keep it the same



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