private void gc() throws Exception {
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setGcRequest(GcRequest.getDefaultInstance())
.build());
}
private void preloadClasspathCache() throws Exception {
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setPreloadClasspathCacheRequest(PreloadClasspathCacheRequest.getDefaultInstance())
.build());
}
private void updateAgentConfig(AgentConfig agentConfig) throws Exception {
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setAgentConfigUpdateRequest(
AgentConfigUpdateRequest.newBuilder().setAgentConfig(agentConfig))
.build());
}
private List<Trace.Entry> getEntries(String traceId) throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setEntriesRequest(EntriesRequest.newBuilder().setTraceId(traceId))
.build());
return response.getEntriesResponse().getEntryList();
}
private int reweave() throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setReweaveRequest(ReweaveRequest.getDefaultInstance())
.build());
return response.getReweaveResponse().getClassUpdateCount();
}
private GlobalMeta globalMeta() throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setGlobalMetaRequest(GlobalMetaRequest.getDefaultInstance())
.build());
return response.getGlobalMetaResponse().getGlobalMeta();
}
private MBeanMeta mbeanMeta(String objectName) throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setMbeanMetaRequest(MBeanMetaRequest.newBuilder().setObjectName(objectName))
.build());
return response.getMbeanMetaResponse().getMbeanMeta();
}
private HeapDumpFileInfo heapDump(String directory) throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setHeapDumpRequest(HeapDumpRequest.newBuilder().setDirectory(directory))
.build());
return response.getHeapDumpResponse().getHeapDumpFileInfo();
}
private ThreadDump threadDump() throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setThreadDumpRequest(ThreadDumpRequest.getDefaultInstance())
.build());
return response.getThreadDumpResponse().getThreadDump();
}
private Capabilities capabilities() throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setCapabilitiesRequest(CapabilitiesRequest.getDefaultInstance())
.build());
return response.getCapabilitiesResponse().getCapabilities();
}
private long availableDiskSpaceBytes(String directory) throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setAvailableDiskSpaceRequest(
AvailableDiskSpaceRequest.newBuilder().setDirectory(directory))
.build());
return response.getAvailableDiskSpaceResponse().getAvailableBytes();
}
private List<String> matchingClassNames(String partialClassName, int limit) throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setMatchingClassNamesRequest(
MatchingClassNamesRequest.newBuilder()
.setPartialClassName(partialClassName)
.setLimit(limit))
.build());
return response.getMatchingClassNamesResponse().getClassNameList();
}
private List<MethodSignature> methodSignatures(String className, String methodName)
throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setMethodSignaturesRequest(
MethodSignaturesRequest.newBuilder()
.setClassName(className)
.setMethodName(methodName))
.build());
return response.getMethodSignaturesResponse().getMethodSignatureList();
}
private MBeanDump mbeanDump(MBeanDumpKind mbeanDumpKind, List<String> objectNames)
throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setMbeanDumpRequest(
MBeanDumpRequest.newBuilder()
.setKind(mbeanDumpKind)
.addAllObjectName(objectNames))
.build());
return response.getMbeanDumpResponse().getMbeanDump();
}
private @Nullable Trace getFullTrace(String traceId) throws Exception {
ClientResponse response =
sendRequest(
ServerRequest.newBuilder()
.setRequestId(nextRequestId.getAndIncrement())
.setFullTraceRequest(FullTraceRequest.newBuilder().setTraceId(traceId))
.build());
if (response.getFullTraceResponse().hasTrace()) {
return response.getFullTraceResponse().getTrace();
} else {
return null;
}
}
private ClientResponse sendRequest(ServerRequest request) throws Exception {
ResponseHolder responseHolder = new ResponseHolder();
responseHolders.put(request.getRequestId(), responseHolder);
requestObserver.onNext(request);
// timeout is in case agent never responds
// passing ClientResponse.getDefaultInstance() is just dummy (non-null) value
ClientResponse response =
responseHolder.response.exchange(ClientResponse.getDefaultInstance(), 1, HOURS);
if (response.getMessageCase() == MessageCase.UNKNOWN_REQUEST_RESPONSE) {
throw new OutdatedAgentException();
}
if (response.getMessageCase() == MessageCase.EXCEPTION_RESPONSE) {
throw new AgentException();
}
return response;
}
@Override
public void onNext(ClientResponse value) {
if (value.getMessageCase() == MessageCase.HELLO) {
agentId = value.getHello().getAgentId();
connectedAgents.put(agentId, ConnectedAgent.this);
requestObserver.onNext(
ServerRequest.newBuilder().setHelloAck(HelloAck.getDefaultInstance()).build());
return;
}
long requestId = value.getRequestId();
ResponseHolder responseHolder = responseHolders.getIfPresent(requestId);
responseHolders.invalidate(requestId);
if (responseHolder == null) {
logger.error("no response holder for request id: {}", requestId);
return;
}
try {
responseHolder.response.exchange(value);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
logger.error(e.getMessage(), e);
}
}