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opentelemetry-java-instrumentation
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Change from enum to object for map lookup key

This commit is contained in:
Tyler Benson 2018-05-07 10:09:46 +10:00
parent 122c482dd5
commit c1ac920e97
6 changed files with 17 additions and 28 deletions
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21
dd-java-agent/agent-bootstrap/src/main/java/datadog/trace/bootstrap/CallDepthThreadLocalMap.java
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@ -11,16 +11,16 @@ import java.util.concurrent.atomic.AtomicInteger;
* #incrementCallDepth at the beginning of each constructor.
*/
public class CallDepthThreadLocalMap {
private static final ThreadLocal<Map<Key, AtomicInteger>> TLS =
new ThreadLocal<Map<Key, AtomicInteger>>() {
private static final ThreadLocal<Map<Object, AtomicInteger>> TLS =
new ThreadLocal<Map<Object, AtomicInteger>>() {
@Override
public Map<Key, AtomicInteger> initialValue() {
public Map<Object, AtomicInteger> initialValue() {
return new HashMap<>();
}
};
public static int incrementCallDepth(final Key k) {
final Map<Key, AtomicInteger> map = TLS.get();
public static int incrementCallDepth(final Object k) {
final Map<Object, AtomicInteger> map = TLS.get();
AtomicInteger depth = map.get(k);
if (depth == null) {
depth = new AtomicInteger(0);
@ -31,17 +31,10 @@ public class CallDepthThreadLocalMap {
}
}
public static void reset(final Key k) {
final Map<Key, AtomicInteger> map = TLS.get();
public static void reset(final Object k) {
final Map<Object, AtomicInteger> map = TLS.get();
if (map != null) {
map.remove(k);
}
}
public enum Key {
CLASSLOADER,
CONNECTION,
PREPARED_STATEMENT,
STATEMENT
}
}

4
dd-java-agent/agent-bootstrap/src/test/groovy/datadog/trace/bootstrap/CallDepthThreadLocalMapTest.groovy
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@ -6,8 +6,8 @@ class CallDepthThreadLocalMapTest extends Specification {
def "test CallDepthThreadLocalMap"() {
setup:
def k1 = CallDepthThreadLocalMap.Key.CLASSLOADER
def k2 = CallDepthThreadLocalMap.Key.CONNECTION
def k1 = new Object()
def k2 = new Object()
expect:
CallDepthThreadLocalMap.incrementCallDepth(k1) == 0

5
dd-java-agent/instrumentation/classloaders/src/main/java/datadog/trace/instrumentation/classloaders/ClassLoaderInstrumentation.java
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@ -1,7 +1,6 @@
package datadog.trace.instrumentation.classloaders;
import static datadog.trace.agent.tooling.ClassLoaderMatcher.classLoaderHasClasses;
import static datadog.trace.bootstrap.CallDepthThreadLocalMap.Key.CLASSLOADER;
import static net.bytebuddy.matcher.ElementMatchers.failSafe;
import static net.bytebuddy.matcher.ElementMatchers.isConstructor;
import static net.bytebuddy.matcher.ElementMatchers.isSubTypeOf;
@ -46,7 +45,7 @@ public final class ClassLoaderInstrumentation extends Instrumenter.Configurable
public static int constructorEnter() {
// We use this to make sure we only apply the exit instrumentation
// after the constructors are done calling their super constructors.
return CallDepthThreadLocalMap.incrementCallDepth(CLASSLOADER);
return CallDepthThreadLocalMap.incrementCallDepth(ClassLoader.class);
}
// Not sure why, but adding suppress causes a verify error.
@ -54,7 +53,7 @@ public final class ClassLoaderInstrumentation extends Instrumenter.Configurable
public static void constructorExit(
@Advice.This final ClassLoader cl, @Advice.Enter final int depth) {
if (depth == 0) {
CallDepthThreadLocalMap.reset(CLASSLOADER);
CallDepthThreadLocalMap.reset(ClassLoader.class);
try {
final Field field = GlobalTracer.class.getDeclaredField("tracer");

5
dd-java-agent/instrumentation/jdbc/src/main/java/datadog/trace/instrumentation/jdbc/ConnectionInstrumentation.java
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@ -1,6 +1,5 @@
package datadog.trace.instrumentation.jdbc;
import static datadog.trace.bootstrap.CallDepthThreadLocalMap.Key.CONNECTION;
import static net.bytebuddy.matcher.ElementMatchers.failSafe;
import static net.bytebuddy.matcher.ElementMatchers.isConstructor;
import static net.bytebuddy.matcher.ElementMatchers.isInterface;
@ -59,7 +58,7 @@ public final class ConnectionInstrumentation extends Instrumenter.Configurable {
public static int constructorEnter() {
// We use this to make sure we only apply the exit instrumentation
// after the constructors are done calling their super constructors.
return CallDepthThreadLocalMap.incrementCallDepth(CONNECTION);
return CallDepthThreadLocalMap.incrementCallDepth(Connection.class);
}
// Since we're instrumenting the constructor, we can't add onThrowable.
@ -68,7 +67,7 @@ public final class ConnectionInstrumentation extends Instrumenter.Configurable {
@Advice.Enter final int depth, @Advice.This final Connection connection)
throws SQLException {
if (depth == 0) {
CallDepthThreadLocalMap.reset(CONNECTION);
CallDepthThreadLocalMap.reset(Connection.class);
final String url = connection.getMetaData().getURL();
if (url != null) {
// Remove end of url to prevent passwords from leaking:

5
dd-java-agent/instrumentation/jdbc/src/main/java/datadog/trace/instrumentation/jdbc/PreparedStatementInstrumentation.java
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@ -1,6 +1,5 @@
package datadog.trace.instrumentation.jdbc;
import static datadog.trace.bootstrap.CallDepthThreadLocalMap.Key.PREPARED_STATEMENT;
import static io.opentracing.log.Fields.ERROR_OBJECT;
import static net.bytebuddy.matcher.ElementMatchers.failSafe;
import static net.bytebuddy.matcher.ElementMatchers.isInterface;
@ -52,7 +51,7 @@ public final class PreparedStatementInstrumentation extends Instrumenter.Configu
@Advice.OnMethodEnter(suppress = Throwable.class)
public static Scope startSpan(@Advice.This final PreparedStatement statement) {
final int callDepth = CallDepthThreadLocalMap.incrementCallDepth(PREPARED_STATEMENT);
final int callDepth = CallDepthThreadLocalMap.incrementCallDepth(PreparedStatement.class);
if (callDepth > 0) {
return null;
}
@ -99,7 +98,7 @@ public final class PreparedStatementInstrumentation extends Instrumenter.Configu
span.log(Collections.singletonMap(ERROR_OBJECT, throwable));
}
scope.close();
CallDepthThreadLocalMap.reset(PREPARED_STATEMENT);
CallDepthThreadLocalMap.reset(PreparedStatement.class);
}
}
}

5
dd-java-agent/instrumentation/jdbc/src/main/java/datadog/trace/instrumentation/jdbc/StatementInstrumentation.java
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@ -1,6 +1,5 @@
package datadog.trace.instrumentation.jdbc;
import static datadog.trace.bootstrap.CallDepthThreadLocalMap.Key.STATEMENT;
import static io.opentracing.log.Fields.ERROR_OBJECT;
import static net.bytebuddy.matcher.ElementMatchers.failSafe;
import static net.bytebuddy.matcher.ElementMatchers.isInterface;
@ -53,7 +52,7 @@ public final class StatementInstrumentation extends Instrumenter.Configurable {
@Advice.OnMethodEnter(suppress = Throwable.class)
public static Scope startSpan(
@Advice.Argument(0) final String sql, @Advice.This final Statement statement) {
final int callDepth = CallDepthThreadLocalMap.incrementCallDepth(STATEMENT);
final int callDepth = CallDepthThreadLocalMap.incrementCallDepth(Statement.class);
if (callDepth > 0) {
return null;
}
@ -101,7 +100,7 @@ public final class StatementInstrumentation extends Instrumenter.Configurable {
span.log(Collections.singletonMap(ERROR_OBJECT, throwable));
}
scope.close();
CallDepthThreadLocalMap.reset(STATEMENT);
CallDepthThreadLocalMap.reset(Statement.class);
}
}
}