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Merged
merged 3 commits into from
Mar 21, 2025
Merged

Record action name for all outbound messages #125399

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40c92a0
Record action name for all outbound messages
DaveCTurner Mar 21, 2025
de20b2a
Missed one
DaveCTurner Mar 21, 2025
d242203
[CI] Auto commit changes from spotless
Mar 21, 2025
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61 changes: 41 additions & 20 deletions server/src/main/java/org/elasticsearch/transport/OutboundHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,6 @@
import org.elasticsearch.common.recycler.Recycler;
import org.elasticsearch.common.transport.NetworkExceptionHelper;
import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.core.RefCounted;
import org.elasticsearch.core.Releasable;
import org.elasticsearch.core.Releasables;
Expand Down Expand Up @@ -116,6 +115,7 @@ void sendRequest(
assert assertValidTransportVersion(transportVersion);
sendMessage(
channel,
MessageDirection.REQUEST,
action,
request,
requestId,
Expand Down Expand Up @@ -148,7 +148,8 @@ void sendResponse(
try {
sendMessage(
channel,
null,
MessageDirection.RESPONSE,
action,
response,
requestId,
isHandshake,
Expand Down Expand Up @@ -190,7 +191,8 @@ void sendErrorResponse(
try {
sendMessage(
channel,
null,
MessageDirection.RESPONSE_ERROR,
action,
msg,
requestId,
false,
Expand All @@ -206,29 +208,36 @@ void sendErrorResponse(
}
}

public enum MessageDirection {
REQUEST,
RESPONSE,
RESPONSE_ERROR
}

private void sendMessage(
TcpChannel channel,
@Nullable String requestAction,
MessageDirection messageDirection,
String action,
Writeable writeable,
long requestId,
boolean isHandshake,
Compression.Scheme compressionScheme,
Compression.Scheme possibleCompressionScheme,
TransportVersion version,
ResponseStatsConsumer responseStatsConsumer,
Releasable onAfter
) throws IOException {
compressionScheme = writeable instanceof BytesTransportRequest ? null : compressionScheme;
assert action != null;
final var compressionScheme = writeable instanceof BytesTransportRequest ? null : possibleCompressionScheme;
final BytesReference message;
boolean serializeSuccess = false;
final boolean isError = writeable instanceof RemoteTransportException;
final RecyclerBytesStreamOutput byteStreamOutput = new RecyclerBytesStreamOutput(recycler);
try {
message = serialize(
requestAction,
messageDirection,
action,
requestId,
isHandshake,
version,
isError,
compressionScheme,
writeable,
threadPool.getThreadContext(),
Expand All @@ -244,14 +253,23 @@ private void sendMessage(
}
}
responseStatsConsumer.addResponseStats(message.length());
final var responseType = writeable.getClass();
final boolean compress = compressionScheme != null;
final var messageType = writeable.getClass();
internalSend(
channel,
message,
requestAction == null
? () -> "Response{" + requestId + "}{" + isError + "}{" + compress + "}{" + isHandshake + "}{" + responseType + "}"
: () -> "Request{" + requestAction + "}{" + requestId + "}{" + isError + "}{" + compress + "}{" + isHandshake + "}",
() -> (messageDirection == MessageDirection.REQUEST ? "Request{" : "Response{")
+ action
+ "}{id="
+ requestId
+ "}{err="
+ (messageDirection == MessageDirection.RESPONSE_ERROR)
+ "}{cs="
+ compressionScheme
+ "}{hs="
+ isHandshake
+ "}{t="
+ messageType
+ "}",
ActionListener.releasing(
message instanceof ReleasableBytesReference r
? Releasables.wrap(byteStreamOutput, onAfter, r)
Expand All @@ -262,38 +280,39 @@ private void sendMessage(

// public for tests
public static BytesReference serialize(
@Nullable String requestAction,
MessageDirection messageDirection,
String action,
long requestId,
boolean isHandshake,
TransportVersion version,
boolean isError,
Compression.Scheme compressionScheme,
Writeable writeable,
ThreadContext threadContext,
RecyclerBytesStreamOutput byteStreamOutput
) throws IOException {
assert action != null;
assert byteStreamOutput.position() == 0;
byteStreamOutput.setTransportVersion(version);
byteStreamOutput.skip(TcpHeader.HEADER_SIZE);
threadContext.writeTo(byteStreamOutput);
if (requestAction != null) {
if (messageDirection == MessageDirection.REQUEST) {
if (version.before(TransportVersions.V_8_0_0)) {
// empty features array
byteStreamOutput.writeStringArray(Strings.EMPTY_ARRAY);
}
byteStreamOutput.writeString(requestAction);
byteStreamOutput.writeString(action);
}

final int variableHeaderLength = Math.toIntExact(byteStreamOutput.position() - TcpHeader.HEADER_SIZE);
BytesReference message = serializeMessageBody(writeable, compressionScheme, version, byteStreamOutput);
byte status = 0;
if (requestAction == null) {
if (messageDirection != MessageDirection.REQUEST) {
status = TransportStatus.setResponse(status);
}
if (isHandshake) {
status = TransportStatus.setHandshake(status);
}
if (isError) {
if (messageDirection == MessageDirection.RESPONSE_ERROR) {
status = TransportStatus.setError(status);
}
if (compressionScheme != null) {
Expand All @@ -316,6 +335,8 @@ private static BytesReference serializeMessageBody(
try {
stream.setTransportVersion(version);
if (writeable instanceof BytesTransportRequest bRequest) {
assert stream == byteStreamOutput;
assert compressionScheme == null;
bRequest.writeThin(stream);
zeroCopyBuffer = bRequest.bytes;
} else if (writeable instanceof RemoteTransportException remoteTransportException) {
Expand Down
90 changes: 30 additions & 60 deletions server/src/test/java/org/elasticsearch/transport/InboundDecoderTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -56,32 +56,17 @@ public void testDecode() throws IOException {
}

try (RecyclerBytesStreamOutput os = new RecyclerBytesStreamOutput(recycler)) {
final BytesReference totalBytes;
if (isRequest) {
totalBytes = OutboundHandler.serialize(
action,
requestId,
false,
TransportVersion.current(),
false,
null,
new TestRequest(randomAlphaOfLength(100)),
threadContext,
os
);
} else {
totalBytes = OutboundHandler.serialize(
null,
requestId,
false,
TransportVersion.current(),
false,
null,
new TestResponse(randomAlphaOfLength(100)),
threadContext,
os
);
}
final BytesReference totalBytes = OutboundHandler.serialize(
isRequest ? OutboundHandler.MessageDirection.REQUEST : OutboundHandler.MessageDirection.RESPONSE,
action,
requestId,
false,
TransportVersion.current(),
null,
isRequest ? new TestRequest(randomAlphaOfLength(100)) : new TestResponse(randomAlphaOfLength(100)),
threadContext,
os
);
int totalHeaderSize = TcpHeader.HEADER_SIZE + totalBytes.getInt(TcpHeader.VARIABLE_HEADER_SIZE_POSITION);
final BytesReference messageBytes = totalBytes.slice(totalHeaderSize, totalBytes.length() - totalHeaderSize);

Expand Down Expand Up @@ -144,11 +129,11 @@ private void doHandshakeCompatibilityTest(TransportVersion transportVersion, Com

try (RecyclerBytesStreamOutput os = new RecyclerBytesStreamOutput(recycler)) {
final BytesReference bytes = OutboundHandler.serialize(
OutboundHandler.MessageDirection.REQUEST,
action,
requestId,
true,
transportVersion,
false,
compressionScheme,
new TestRequest(randomAlphaOfLength(100)),
threadContext,
Expand Down Expand Up @@ -195,11 +180,11 @@ public void testClientChannelTypeFailsDecodingRequests() throws Exception {

try (RecyclerBytesStreamOutput os = new RecyclerBytesStreamOutput(recycler)) {
final BytesReference bytes = OutboundHandler.serialize(
OutboundHandler.MessageDirection.REQUEST,
action,
requestId,
isHandshake,
version,
false,
randomFrom(Compression.Scheme.DEFLATE, Compression.Scheme.LZ4, null),
new TestRequest(randomAlphaOfLength(100)),
threadContext,
Expand Down Expand Up @@ -243,11 +228,11 @@ public void testServerChannelTypeFailsDecodingResponses() throws Exception {

try (RecyclerBytesStreamOutput os = new RecyclerBytesStreamOutput(recycler)) {
final BytesReference bytes = OutboundHandler.serialize(
null,
OutboundHandler.MessageDirection.RESPONSE,
"test:action",
requestId,
isHandshake,
version,
false,
randomFrom(Compression.Scheme.DEFLATE, Compression.Scheme.LZ4, null),
new TestRequest(randomAlphaOfLength(100)),
threadContext,
Expand Down Expand Up @@ -281,38 +266,23 @@ public void testCompressedDecode() throws IOException {
} else {
threadContext.addResponseHeader(headerKey, headerValue);
}
final BytesReference totalBytes;
TransportMessage transportMessage;
Compression.Scheme scheme = randomFrom(Compression.Scheme.DEFLATE, Compression.Scheme.LZ4);

try (RecyclerBytesStreamOutput os = new RecyclerBytesStreamOutput(recycler)) {
if (isRequest) {
transportMessage = new TestRequest(randomAlphaOfLength(100));
totalBytes = OutboundHandler.serialize(
action,
requestId,
false,
TransportVersion.current(),
false,
scheme,
transportMessage,
threadContext,
os
);
} else {
transportMessage = new TestResponse(randomAlphaOfLength(100));
totalBytes = OutboundHandler.serialize(
null,
requestId,
false,
TransportVersion.current(),
false,
scheme,
transportMessage,
threadContext,
os
);
}
final TransportMessage transportMessage = isRequest
? new TestRequest(randomAlphaOfLength(100))
: new TestResponse(randomAlphaOfLength(100));
final BytesReference totalBytes = OutboundHandler.serialize(
isRequest ? OutboundHandler.MessageDirection.REQUEST : OutboundHandler.MessageDirection.RESPONSE,
action,
requestId,
false,
TransportVersion.current(),
scheme,
transportMessage,
threadContext,
os
);
final BytesStreamOutput out = new BytesStreamOutput();
transportMessage.writeTo(out);
final BytesReference uncompressedBytes = out.bytes();
Expand Down Expand Up @@ -373,11 +343,11 @@ public void testVersionIncompatibilityDecodeException() throws IOException {
final ReleasableBytesReference releasable1;
try (RecyclerBytesStreamOutput os = new RecyclerBytesStreamOutput(recycler)) {
final BytesReference bytes = OutboundHandler.serialize(
OutboundHandler.MessageDirection.REQUEST,
action,
requestId,
false,
incompatibleVersion,
false,
Compression.Scheme.DEFLATE,
new TestRequest(randomAlphaOfLength(100)),
threadContext,
Expand Down
2 changes: 1 addition & 1 deletion server/src/test/java/org/elasticsearch/transport/InboundHandlerTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -172,11 +172,11 @@ public TestResponse read(StreamInput in) throws IOException {
String requestValue = randomAlphaOfLength(10);
BytesRefRecycler recycler = new BytesRefRecycler(PageCacheRecycler.NON_RECYCLING_INSTANCE);
BytesReference fullRequestBytes = OutboundHandler.serialize(
OutboundHandler.MessageDirection.REQUEST,
action,
requestId,
false,
TransportVersion.current(),
false,
null,
new TestRequest(requestValue),
threadPool.getThreadContext(),
Expand Down
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