[improve][admin] Expose the offload threshold in seconds to the amdin (…

…apache#22101)

(cherry picked from commit 48c7e32)

pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/CmdNamespaces.java

@@ -1962,7 +1962,8 @@ private class GetOffloadThreshold extends CliCommand {
         @Override
         void run() throws PulsarAdminException {
             String namespace = validateNamespace(params);
-            print(getAdmin().namespaces().getOffloadThreshold(namespace));
+            print("offloadThresholdInBytes: " + getAdmin().namespaces().getOffloadThreshold(namespace));
+            print("offloadThresholdInSeconds: " + getAdmin().namespaces().getOffloadThresholdInSeconds(namespace));
         }
     }
 
@@ -1980,11 +1981,18 @@ private class SetOffloadThreshold extends CliCommand {
                    required = true)
         private String thresholdStr = "-1";
 
+        @Parameter(names = {"--time", "-t"},
+            description = "Maximum number of seconds stored on the pulsar cluster for a topic"
+                + " before the broker will start offloading to longterm storage (eg: 10m, 5h, 3d, 2w).",
+            converter = TimeUnitToSecondsConverter.class)
+        private Long thresholdInSeconds = -1L;
+
         @Override
         void run() throws PulsarAdminException {
             String namespace = validateNamespace(params);
             long threshold = validateSizeString(thresholdStr);
             getAdmin().namespaces().setOffloadThreshold(namespace, threshold);
+            getAdmin().namespaces().setOffloadThresholdInSeconds(namespace, thresholdInSeconds);
         }
     }