@Test
public void prepareHeaders_ignoreIdentityEncoding() {
Metadata m = new Metadata();
ClientCallImpl.prepareHeaders(m, decompressorRegistry, Codec.Identity.NONE);
assertNull(m.get(GrpcUtil.MESSAGE_ENCODING_KEY));
}
@Test
public void prepareHeaders_userAgentAdded() {
Metadata m = new Metadata();
ClientCallImpl.prepareHeaders(
m, CallOptions.DEFAULT, "user agent", DecompressorRegistry.getDefaultInstance());
assertEquals(m.get(GrpcUtil.USER_AGENT_KEY), "user agent");
}
@Test
public void prepareHeaders_ignoreIdentityEncoding() {
Metadata m = new Metadata();
CallOptions callOptions = CallOptions.DEFAULT.withCompressor(Codec.Identity.NONE);
ClientCallImpl.prepareHeaders(
m, callOptions, "user agent", DecompressorRegistry.getDefaultInstance());
assertNull(m.get(GrpcUtil.MESSAGE_ENCODING_KEY));
}
@Test
public void prepareHeaders_messageEncodingAdded() {
Metadata m = new Metadata();
CallOptions callOptions = CallOptions.DEFAULT.withCompressor(new Codec.Gzip());
ClientCallImpl.prepareHeaders(
m, callOptions, "user agent", DecompressorRegistry.getDefaultInstance());
assertEquals(m.get(GrpcUtil.MESSAGE_ENCODING_KEY), new Codec.Gzip().getMessageEncoding());
}
@Test
public void prepareHeaders_authorityAdded() {
Metadata m = new Metadata();
CallOptions callOptions = CallOptions.DEFAULT.withAuthority("auth");
ClientCallImpl.prepareHeaders(
m, callOptions, "user agent", DecompressorRegistry.getDefaultInstance());
assertEquals(m.get(GrpcUtil.AUTHORITY_KEY), "auth");
}
@Test
public void prepareHeaders_userAgentIgnored() {
Metadata m = new Metadata();
m.put(GrpcUtil.USER_AGENT_KEY, "batmobile");
ClientCallImpl.prepareHeaders(m, decompressorRegistry, Codec.Identity.NONE);
// User Agent is removed and set by the transport
assertThat(m.get(GrpcUtil.USER_AGENT_KEY)).isNotNull();
}
@Test
public void prepareHeaders_removeReservedHeaders() {
Metadata m = new Metadata();
m.put(GrpcUtil.MESSAGE_ENCODING_KEY, "gzip");
m.put(GrpcUtil.MESSAGE_ACCEPT_ENCODING_KEY, "gzip");
ClientCallImpl.prepareHeaders(m, DecompressorRegistry.emptyInstance(), Codec.Identity.NONE);
assertNull(m.get(GrpcUtil.MESSAGE_ENCODING_KEY));
assertNull(m.get(GrpcUtil.MESSAGE_ACCEPT_ENCODING_KEY));
}
@Test
public void prepareHeaders_acceptedEncodingsAdded() {
Metadata m = new Metadata();
DecompressorRegistry customRegistry =
DecompressorRegistry.emptyInstance()
.with(
new Decompressor() {
@Override
public String getMessageEncoding() {
return "a";
}
@Override
public InputStream decompress(InputStream is) throws IOException {
return null;
}
},
true)
.with(
new Decompressor() {
@Override
public String getMessageEncoding() {
return "b";
}
@Override
public InputStream decompress(InputStream is) throws IOException {
return null;
}
},
true)
.with(
new Decompressor() {
@Override
public String getMessageEncoding() {
return "c";
}
@Override
public InputStream decompress(InputStream is) throws IOException {
return null;
}
},
false); // not advertised
ClientCallImpl.prepareHeaders(m, customRegistry, Codec.Identity.NONE);
Iterable<String> acceptedEncodings =
ACCEPT_ENCODING_SPLITER.split(m.get(GrpcUtil.MESSAGE_ACCEPT_ENCODING_KEY));
// Order may be different, since decoder priorities have not yet been implemented.
assertEquals(ImmutableSet.of("b", "a"), ImmutableSet.copyOf(acceptedEncodings));
}
@Test
public void prepareHeaders_removeReservedHeaders() {
Metadata m = new Metadata();
m.put(GrpcUtil.AUTHORITY_KEY, "auth");
m.put(GrpcUtil.USER_AGENT_KEY, "user agent");
m.put(GrpcUtil.MESSAGE_ENCODING_KEY, "gzip");
m.put(GrpcUtil.MESSAGE_ACCEPT_ENCODING_KEY, "gzip");
ClientCallImpl.prepareHeaders(
m, CallOptions.DEFAULT, null, DecompressorRegistry.newEmptyInstance());
assertNull(m.get(GrpcUtil.AUTHORITY_KEY));
assertNull(m.get(GrpcUtil.USER_AGENT_KEY));
assertNull(m.get(GrpcUtil.MESSAGE_ENCODING_KEY));
assertNull(m.get(GrpcUtil.MESSAGE_ACCEPT_ENCODING_KEY));
}
@Override
public void start(final Listener<RespT> observer, Metadata headers) {
checkState(stream == null, "Already started");
checkNotNull(observer, "observer");
checkNotNull(headers, "headers");
// Create the context
final Deadline effectiveDeadline = min(callOptions.getDeadline(), parentContext.getDeadline());
if (effectiveDeadline != parentContext.getDeadline()) {
context = parentContext.withDeadline(effectiveDeadline, deadlineCancellationExecutor);
} else {
context = parentContext.withCancellation();
}
if (context.isCancelled()) {
// Context is already cancelled so no need to create a real stream, just notify the observer
// of cancellation via callback on the executor
stream = NoopClientStream.INSTANCE;
callExecutor.execute(
new ContextRunnable(context) {
@Override
public void runInContext() {
observer.onClose(statusFromCancelled(context), new Metadata());
}
});
return;
}
final String compressorName = callOptions.getCompressor();
Compressor compressor = null;
if (compressorName != null) {
compressor = compressorRegistry.lookupCompressor(compressorName);
if (compressor == null) {
stream = NoopClientStream.INSTANCE;
callExecutor.execute(
new ContextRunnable(context) {
@Override
public void runInContext() {
observer.onClose(
Status.INTERNAL.withDescription(
String.format("Unable to find compressor by name %s", compressorName)),
new Metadata());
}
});
return;
}
} else {
compressor = Codec.Identity.NONE;
}
prepareHeaders(headers, callOptions, userAgent, decompressorRegistry, compressor);
final boolean deadlineExceeded = effectiveDeadline != null && effectiveDeadline.isExpired();
if (!deadlineExceeded) {
updateTimeoutHeaders(
effectiveDeadline, callOptions.getDeadline(), parentContext.getDeadline(), headers);
ClientTransport transport = clientTransportProvider.get(callOptions);
stream = transport.newStream(method, headers);
} else {
stream = new FailingClientStream(DEADLINE_EXCEEDED);
}
if (callOptions.getAuthority() != null) {
stream.setAuthority(callOptions.getAuthority());
}
stream.setCompressor(compressor);
stream.start(new ClientStreamListenerImpl(observer));
if (compressor != Codec.Identity.NONE) {
stream.setMessageCompression(true);
}
// Delay any sources of cancellation after start(), because most of the transports are broken if
// they receive cancel before start. Issue #1343 has more details
// Propagate later Context cancellation to the remote side.
context.addListener(this, directExecutor());
if (contextListenerShouldBeRemoved) {
// Race detected! ClientStreamListener.closed may have been called before
// deadlineCancellationFuture was set, thereby preventing the future from being cancelled.
// Go ahead and cancel again, just to be sure it was cancelled.
context.removeListener(this);
}
}
