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TracingCqlSession.java
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TracingCqlSession.java
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/*
* Copyright 2017-2020 The OpenTracing Authors
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package io.opentracing.contrib.cassandra4;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.CqlSession;
import com.datastax.oss.driver.api.core.context.DriverContext;
import com.datastax.oss.driver.api.core.cql.AsyncResultSet;
import com.datastax.oss.driver.api.core.cql.BoundStatement;
import com.datastax.oss.driver.api.core.cql.PrepareRequest;
import com.datastax.oss.driver.api.core.cql.PreparedStatement;
import com.datastax.oss.driver.api.core.cql.ResultSet;
import com.datastax.oss.driver.api.core.cql.SimpleStatement;
import com.datastax.oss.driver.api.core.cql.Statement;
import com.datastax.oss.driver.api.core.metadata.Metadata;
import com.datastax.oss.driver.api.core.metrics.Metrics;
import com.datastax.oss.driver.api.core.session.Request;
import com.datastax.oss.driver.api.core.type.reflect.GenericType;
import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;
import io.opentracing.Span;
import io.opentracing.Tracer;
import io.opentracing.Tracer.SpanBuilder;
import io.opentracing.tag.Tags;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.CompletionStage;
public class TracingCqlSession implements CqlSession {
static final String COMPONENT_NAME = "java-cassandra";
private final CqlSession session;
private final Tracer tracer;
public TracingCqlSession(CqlSession session, Tracer tracer) {
this.session = session;
this.tracer = tracer;
}
@Override
@NonNull
public ResultSet execute(@NonNull Statement<?> statement) {
SpanBuilder spanBuilder = spanBuilder();
if (statement instanceof SimpleStatement) {
SimpleStatement simpleStatement = (SimpleStatement) statement;
spanBuilder.withTag(Tags.DB_STATEMENT.getKey(), simpleStatement.getQuery());
} else if (statement instanceof BoundStatement) {
BoundStatement boundStatement = (BoundStatement) statement;
spanBuilder
.withTag(Tags.DB_STATEMENT.getKey(), boundStatement.getPreparedStatement().getQuery());
}
final Span span = spanBuilder.start();
try {
return session.execute(statement);
} catch (Exception e) {
onError(span, e);
throw e;
} finally {
span.finish();
}
}
@Override
@NonNull
public ResultSet execute(@NonNull String query) {
final Span span = spanBuilder().withTag(Tags.DB_STATEMENT.getKey(), query).start();
try {
return session.execute(query);
} catch (Exception e) {
onError(span, e);
throw e;
} finally {
span.finish();
}
}
@Override
@NonNull
public CompletionStage<AsyncResultSet> executeAsync(@NonNull Statement<?> statement) {
SpanBuilder spanBuilder = spanBuilder();
if (statement instanceof SimpleStatement) {
SimpleStatement simpleStatement = (SimpleStatement) statement;
spanBuilder.withTag(Tags.DB_STATEMENT.getKey(), simpleStatement.getQuery());
} else if (statement instanceof BoundStatement) {
BoundStatement boundStatement = (BoundStatement) statement;
spanBuilder
.withTag(Tags.DB_STATEMENT.getKey(), boundStatement.getPreparedStatement().getQuery());
}
final Span span = spanBuilder.start();
return session.executeAsync(statement).whenComplete((asyncResultSet, throwable) -> {
if (throwable != null) {
onError(span, throwable);
}
span.finish();
});
}
@Override
@NonNull
public CompletionStage<AsyncResultSet> executeAsync(@NonNull String query) {
final Span span = spanBuilder().withTag(Tags.DB_STATEMENT.getKey(), query).start();
return session.executeAsync(query).whenComplete((asyncResultSet, throwable) -> {
if (throwable != null) {
onError(span, throwable);
}
span.finish();
});
}
@Override
@NonNull
public PreparedStatement prepare(@NonNull SimpleStatement statement) {
return session.prepare(statement);
}
@Override
@NonNull
public PreparedStatement prepare(@NonNull String query) {
return session.prepare(query);
}
@Override
@NonNull
public PreparedStatement prepare(@NonNull PrepareRequest request) {
return session.prepare(request);
}
@Override
@NonNull
public CompletionStage<PreparedStatement> prepareAsync(@NonNull SimpleStatement statement) {
return session.prepareAsync(statement);
}
@Override
@NonNull
public CompletionStage<PreparedStatement> prepareAsync(@NonNull String query) {
return session.prepareAsync(query);
}
@Override
@NonNull
public CompletionStage<PreparedStatement> prepareAsync(PrepareRequest request) {
return session.prepareAsync(request);
}
@Override
@NonNull
public String getName() {
return session.getName();
}
@Override
@NonNull
public Metadata getMetadata() {
return session.getMetadata();
}
@Override
public boolean isSchemaMetadataEnabled() {
return session.isSchemaMetadataEnabled();
}
@Override
@NonNull
public CompletionStage<Metadata> setSchemaMetadataEnabled(
@Nullable Boolean newValue) {
return session.setSchemaMetadataEnabled(newValue);
}
@Override
@NonNull
public CompletionStage<Metadata> refreshSchemaAsync() {
return session.refreshSchemaAsync();
}
@Override
@NonNull
public Metadata refreshSchema() {
return session.refreshSchema();
}
@Override
@NonNull
public CompletionStage<Boolean> checkSchemaAgreementAsync() {
return session.checkSchemaAgreementAsync();
}
@Override
public boolean checkSchemaAgreement() {
return session.checkSchemaAgreement();
}
@Override
@NonNull
public DriverContext getContext() {
return session.getContext();
}
@Override
@NonNull
public Optional<CqlIdentifier> getKeyspace() {
return session.getKeyspace();
}
@Override
@NonNull
public Optional<Metrics> getMetrics() {
return session.getMetrics();
}
@Override
@Nullable
public <RequestT extends Request, ResultT> ResultT execute(
@NonNull RequestT request,
@NonNull GenericType<ResultT> resultType) {
return session.execute(request, resultType);
}
@Override
@NonNull
public CompletionStage<Void> closeFuture() {
return session.closeFuture();
}
@Override
public boolean isClosed() {
return session.isClosed();
}
@Override
@NonNull
public CompletionStage<Void> closeAsync() {
return session.closeAsync();
}
@Override
@NonNull
public CompletionStage<Void> forceCloseAsync() {
return session.forceCloseAsync();
}
@Override
public void close() {
session.close();
}
private static void onError(Span span, Throwable e) {
Tags.ERROR.set(span, Boolean.TRUE);
span.log(errorLogs(e));
}
private static Map<String, Object> errorLogs(Throwable throwable) {
Map<String, Object> errorLogs = new HashMap<>(2);
errorLogs.put("event", Tags.ERROR.getKey());
errorLogs.put("error.object", throwable);
return errorLogs;
}
private SpanBuilder spanBuilder() {
return tracer.buildSpan("execute")
.withTag(Tags.SPAN_KIND.getKey(), Tags.SPAN_KIND_CLIENT)
.withTag(Tags.COMPONENT.getKey(), COMPONENT_NAME)
.withTag(Tags.DB_TYPE.getKey(), "cassandra");
}
}