sadanand48 commented on code in PR #5038:
URL: https://github.com/apache/ozone/pull/5038#discussion_r1260042276
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hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/admin/scm/GetScmRatisRolesSubcommand.java:
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@@ -38,11 +45,45 @@ public class GetScmRatisRolesSubcommand extends
ScmSubcommand {
@CommandLine.ParentCommand
private ScmAdmin parent;
+ @CommandLine.Option(names = { "--json" },
+ defaultValue = "false",
+ description = "Format output as JSON")
+ private boolean json;
+
@Override
protected void execute(ScmClient scmClient) throws IOException {
- List<String> roles = scmClient.getScmRatisRoles();
- for (String role: roles) {
- System.out.println(role);
+ List<String> ratisRoles = scmClient.getScmRatisRoles();
+ if (json) {
+ Map<String, Map<String, String>> scmRoles = parseScmRoles(ratisRoles);
+ System.out.print(
+ JsonUtils.toJsonStringWithDefaultPrettyPrinter(scmRoles));
+ } else {
+ for (String role: ratisRoles) {
+ System.out.println(role);
+ }
+ }
+ }
+
+ private Map<String, Map<String, String>> parseScmRoles(
+ List<String> ratisRoles) {
+ Map<String, Map<String, String>> allRoles = new HashMap<>();
+ for (String role : ratisRoles) {
+ Map<String, String> roleDetails = new HashMap<>();
+ String[] roles = role.split(":");
+ if (roles.length < 2) {
+ err.println("Invalid response received for ScmRatisRoles.");
+ return Collections.emptyMap();
+ }
+ // In case, there is no ratis, there is no ratis role.
+ // This will just print the hostname with ratis port as the address
+ roleDetails.put("address", roles[0].concat(":").concat(roles[1]));
+ if (roles.length == 5) {
Review Comment:
I guess we could also solve this without modifying the current API a lot,
Only on the server side introduce this API that returns an Object , json
Stringify the object and return it to this current API.
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