wangyang0918 commented on a change in pull request #10245:
[FLINK-10936][kubernetes] Implement Kubernetes command line tools to support
session cluster.
URL: https://github.com/apache/flink/pull/10245#discussion_r355171293
##########
File path:
flink-clients/src/main/java/org/apache/flink/client/cli/AbstractCustomCommandLine.java
##########
@@ -89,4 +96,80 @@ public Configuration
applyCommandLineOptionsToConfiguration(CommandLine commandL
return resultingConfiguration;
}
+
+ protected void printUsage() {
+ System.out.println("Usage:");
+ HelpFormatter formatter = new HelpFormatter();
+ formatter.setWidth(200);
+ formatter.setLeftPadding(5);
+
+ formatter.setSyntaxPrefix(" Optional");
+ Options options = new Options();
+ addGeneralOptions(options);
+ addRunOptions(options);
+ formatter.printHelp(" ", options);
+ }
+
+ protected static int handleCliArgsException(CliArgsException e) {
+ LOG.error("Could not parse the command line arguments.", e);
+
+ System.out.println(e.getMessage());
+ System.out.println();
+ System.out.println("Use the help option (-h or --help) to get
help on the command.");
+ return 1;
+ }
+
+ protected static int handleError(Throwable t) {
+ LOG.error("Error while running the Flink session.", t);
+
+ System.err.println();
+
System.err.println("------------------------------------------------------------");
+ System.err.println(" The program finished with the following
exception:");
+ System.err.println();
+
+ t.printStackTrace();
+ return 1;
+ }
+
+ /**
+ * Read-Evaluate-Print step for the REPL.
+ *
+ * @param in to read from
+ * @param readConsoleInput true if console input has to be read
+ * @param clientPollingIntervalMs wait until clientPollingIntervalMs is
over or the user entered something.
+ * @param helpMessage help message
+ * @return true if the REPL shall be continued, otherwise false
+ */
+ protected static boolean repStep(
+ BufferedReader in,
+ boolean readConsoleInput,
+ long clientPollingIntervalMs,
+ String helpMessage) throws IOException, InterruptedException {
+
+ long startTime = System.currentTimeMillis();
+ while ((System.currentTimeMillis() - startTime) <
clientPollingIntervalMs
Review comment:
`CLIENT_POLLING_INTERVAL_MS ` could be moved into the
`AbstractCustomCommandLine` so that it could be used for all clients.
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