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fix(rest): map invalid history length to InvalidParamsError #715

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fix(rest): map invalid history length to InvalidParamsError #715

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c41100d
fix(rest): map invalid history length to InvalidParamsError
Zhang-Charlie Mar 9, 2026
758f24e
fix(rest): scope historyLength validation handling in getTask
Zhang-Charlie Mar 9, 2026
3ac5f90
fix(cloud-deployment): use Strimzi-supported Kafka version
Zhang-Charlie Mar 9, 2026
ad84170
Revert "fix(cloud-deployment): use Strimzi-supported Kafka version"
Zhang-Charlie Mar 9, 2026
4d7cb1d
Merge branch 'main' into fix/rest-historylength-validation
ehsavoie Mar 9, 2026
91fd77d
Merge branch 'main' into fix/rest-historylength-validation
Zhang-Charlie Mar 9, 2026
c2bbaab
fix(rest): return problem+json for historyLength validation errors
Zhang-Charlie Mar 9, 2026
c330b8c
Merge branch 'main' into fix/rest-historylength-validation
ehsavoie Mar 10, 2026
105345a
fix: throw InvalidParamsError instead of wrapping in problem response
Zhang-Charlie Mar 10, 2026
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13 changes: 12 additions & 1 deletion transport/rest/src/main/java/io/a2a/transport/rest/handler/RestHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -415,7 +415,12 @@ public HTTPRestResponse subscribeToTask(ServerCallContext context, String tenant
*/
public HTTPRestResponse getTask(ServerCallContext context, String tenant, String taskId, @Nullable Integer historyLength) {
try {
TaskQueryParams params = new TaskQueryParams(taskId, historyLength, tenant);
TaskQueryParams params;
try {
params = new TaskQueryParams(taskId, historyLength, tenant);
} catch (IllegalArgumentException e) {
throw new InvalidParamsError(e.getMessage());
}
Task task = requestHandler.onGetTask(params, context);
if (task != null) {
return createSuccessResponse(200, io.a2a.grpc.Task.newBuilder(ProtoUtils.ToProto.task(task)));
Expand Down Expand Up @@ -648,6 +653,12 @@ private HTTPRestResponse createErrorResponse(int statusCode, A2AError error) {
return new HTTPRestResponse(statusCode, APPLICATION_PROBLEM_JSON, jsonBody);
}

private HTTPRestResponse createProblemErrorResponse(A2AError error) {
int statusCode = mapErrorToHttpStatus(error);
String jsonBody = new HTTPRestErrorResponse(error).toJson();
return new HTTPRestResponse(statusCode, "application/problem+json", jsonBody);
}

private HTTPRestStreamingResponse createStreamingResponse(Flow.Publisher<StreamingEventKind> publisher) {
return new HTTPRestStreamingResponse(convertToSendStreamingMessageResponse(publisher));
}
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11 changes: 11 additions & 0 deletions transport/rest/src/test/java/io/a2a/transport/rest/handler/RestHandlerTest.java
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Expand Up @@ -58,6 +58,17 @@ public void testGetTaskNotFound() {
Assertions.assertTrue(response.getBody().contains("TaskNotFoundError"));
}

@Test
public void testGetTaskNegativeHistoryLengthReturns422() {
RestHandler handler = new RestHandler(CARD, requestHandler, internalExecutor);

RestHandler.HTTPRestResponse response = handler.getTask(callContext, "", MINIMAL_TASK.id(), -1);

Assertions.assertEquals(422, response.getStatusCode());
Assertions.assertEquals("application/problem+json", response.getContentType());
Assertions.assertTrue(response.getBody().contains("InvalidParamsError"));
}

@Test
public void testListTasksStatusWireString() {
RestHandler handler = new RestHandler(CARD, requestHandler, internalExecutor);
Expand Down