134 lines
5.1 KiB
C++
134 lines
5.1 KiB
C++
/*
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* MutationTracking.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2020 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <algorithm>
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#include <vector>
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#include "fdbclient/FDBTypes.h"
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#include "fdbserver/MutationTracking.h"
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#include "fdbserver/LogProtocolMessage.h"
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#include "fdbserver/SpanContextMessage.h"
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#include "fdbclient/SystemData.h"
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#if defined(FDB_CLEAN_BUILD) && MUTATION_TRACKING_ENABLED
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#error "You cannot use mutation tracking in a clean/release build."
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#endif
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// If MUTATION_TRACKING_ENABLED is set, MutationTracking events will be logged for the
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// keys in debugKeys and the ranges in debugRanges.
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// Each entry is a pair of (label, keyOrRange) and the Label will be attached to the
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// MutationTracking TraceEvent for easier searching/recognition.
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std::vector<std::pair<const char*, KeyRef>> debugKeys = { { "SomeKey", "foo"_sr } };
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std::vector<std::pair<const char*, KeyRangeRef>> debugRanges = { { "Everything", { ""_sr, "\xff\xff\xff\xff"_sr } } };
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TraceEvent debugMutationEnabled(const char* context, Version version, MutationRef const& mutation, UID id) {
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const char* label = nullptr;
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for (auto& labelKey : debugKeys) {
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if (((mutation.type == mutation.ClearRange || mutation.type == mutation.DebugKeyRange) &&
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KeyRangeRef(mutation.param1, mutation.param2).contains(labelKey.second)) ||
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mutation.param1 == labelKey.second) {
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label = labelKey.first;
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break;
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}
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}
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for (auto& labelRange : debugRanges) {
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if (((mutation.type == mutation.ClearRange || mutation.type == mutation.DebugKeyRange) &&
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KeyRangeRef(mutation.param1, mutation.param2).intersects(labelRange.second)) ||
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labelRange.second.contains(mutation.param1)) {
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label = labelRange.first;
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break;
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}
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}
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if (label != nullptr) {
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TraceEvent event("MutationTracking", id);
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event.detail("Label", label).detail("At", context).detail("Version", version).detail("Mutation", mutation);
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return event;
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}
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return TraceEvent();
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}
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TraceEvent debugKeyRangeEnabled(const char* context, Version version, KeyRangeRef const& keys, UID id) {
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return debugMutation(context, version, MutationRef(MutationRef::DebugKeyRange, keys.begin, keys.end), id);
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}
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TraceEvent debugTagsAndMessageEnabled(const char* context, Version version, StringRef commitBlob, UID id) {
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BinaryReader rdr(commitBlob, AssumeVersion(g_network->protocolVersion()));
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while (!rdr.empty()) {
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if (*(int32_t*)rdr.peekBytes(4) == VERSION_HEADER) {
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int32_t dummy;
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rdr >> dummy >> version;
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continue;
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}
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TagsAndMessage msg;
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msg.loadFromArena(&rdr, nullptr);
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bool logAdapterMessage = std::any_of(
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msg.tags.begin(), msg.tags.end(), [](const Tag& t) { return t == txsTag || t.locality == tagLocalityTxs; });
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StringRef mutationData = msg.getMessageWithoutTags();
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uint8_t mutationType = *mutationData.begin();
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if (logAdapterMessage) {
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// Skip the message, as there will always be an idential non-logAdapterMessage mutation
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// that we can match against in the same commit.
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} else if (LogProtocolMessage::startsLogProtocolMessage(mutationType)) {
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BinaryReader br(mutationData, AssumeVersion(rdr.protocolVersion()));
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LogProtocolMessage lpm;
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br >> lpm;
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rdr.setProtocolVersion(br.protocolVersion());
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} else if (SpanContextMessage::startsSpanContextMessage(mutationType)) {
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BinaryReader br(mutationData, AssumeVersion(rdr.protocolVersion()));
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SpanContextMessage scm;
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br >> scm;
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} else {
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MutationRef m;
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BinaryReader br(mutationData, AssumeVersion(rdr.protocolVersion()));
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br >> m;
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TraceEvent event = debugMutation(context, version, m, id);
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if (event.isEnabled()) {
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event.detail("MessageTags", msg.tags);
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return event;
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}
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}
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}
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return TraceEvent();
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}
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#if MUTATION_TRACKING_ENABLED
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TraceEvent debugMutation(const char* context, Version version, MutationRef const& mutation, UID id) {
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return debugMutationEnabled(context, version, mutation, id);
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}
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TraceEvent debugKeyRange(const char* context, Version version, KeyRangeRef const& keys, UID id) {
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return debugKeyRangeEnabled(context, version, keys, id);
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}
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TraceEvent debugTagsAndMessage(const char* context, Version version, StringRef commitBlob, UID id) {
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return debugTagsAndMessageEnabled(context, version, commitBlob, id);
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}
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#else
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TraceEvent debugMutation(const char* context, Version version, MutationRef const& mutation, UID id) {
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return TraceEvent();
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}
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TraceEvent debugKeyRange(const char* context, Version version, KeyRangeRef const& keys, UID id) {
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return TraceEvent();
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}
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TraceEvent debugTagsAndMessage(const char* context, Version version, StringRef commitBlob, UID id) {
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return TraceEvent();
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}
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#endif
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