public void open()

in flink-connector-jdbc/src/main/java/org/apache/flink/connector/jdbc/internal/JdbcOutputFormat.java [138:166]

29 lines of code
6 McCabe index (conditional complexity)


    public void open(int taskNumber, int numTasks) throws IOException {
        try {
            connectionProvider.getOrEstablishConnection();
        } catch (Exception e) {
            throw new IOException("unable to open JDBC writer", e);
        }
        jdbcStatementExecutor = createAndOpenStatementExecutor(statementExecutorFactory);
        if (executionOptions.getBatchIntervalMs() != 0 && executionOptions.getBatchSize() != 1) {
            this.scheduler =
                    Executors.newScheduledThreadPool(
                            1, new ExecutorThreadFactory("jdbc-upsert-output-format"));
            this.scheduledFuture =
                    this.scheduler.scheduleWithFixedDelay(
                            () -> {
                                synchronized (JdbcOutputFormat.this) {
                                    if (!closed) {
                                        try {
                                            flush();
                                        } catch (Exception e) {
                                            flushException = e;
                                        }
                                    }
                                }
                            },
                            executionOptions.getBatchIntervalMs(),
                            executionOptions.getBatchIntervalMs(),
                            TimeUnit.MILLISECONDS);
        }
    }