errose28 commented on a change in pull request #2713:
URL: https://github.com/apache/ozone/pull/2713#discussion_r723505476
##########
File path:
hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/shell/Handler.java
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@@ -118,6 +119,29 @@ protected void printObjectAsJson(Object o) throws
IOException {
out().println(JsonUtils.toJsonStringWithDefaultPrettyPrinter(o));
}
+ protected String objectToJsonString(Object o) throws IOException {
+ return JsonUtils.toJsonStringWithDefaultPrettyPrinter(o);
+ }
+
+ /**
+ * Print the results in the iterator as a valid JSON array to out().
+ * @return Number of entries actually printed.
+ */
+ protected int printAsJsonArray(Iterator<?> iterator, int limit)
+ throws IOException {
+ int counter = 0;
+ out().print("[ ");
+ while (limit > counter && iterator.hasNext()) {
+ if (counter > 0) {
+ out().print(", ");
+ }
+ out().print(objectToJsonString(iterator.next()));
+ counter++;
+ }
+ out().println(" ]");
Review comment:
Can we build the list using jackson in `JsonUtils` instead of mixing
library generated json with manually generated json? JsonUtil has a
`toJsonList` function but its actually a deserializer, not a serializer as the
name implies. It also looks unused. Maybe we can make to `toJsonList` actually
serialize a list of objects and use that here instead.
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