agozhiy commented on a change in pull request #1910: DRILL-7393: Revisit Drill
tests to ensure that patching is executed b…
URL: https://github.com/apache/drill/pull/1910#discussion_r352359784
##########
File path: common/src/main/java/org/apache/drill/common/util/GuavaPatcher.java
##########
@@ -24,154 +24,157 @@
import java.util.stream.Collectors;
import java.util.stream.IntStream;
-import javassist.CannotCompileException;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtConstructor;
import javassist.CtMethod;
import javassist.CtNewMethod;
-import javassist.NotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GuavaPatcher {
private static final Logger logger =
LoggerFactory.getLogger(GuavaPatcher.class);
- private static boolean patched;
+ private static boolean patchingAttempted;
public static synchronized void patch() {
- if (!patched) {
- try {
- patchStopwatch();
- patchCloseables();
- patchPreconditions();
- patched = true;
- } catch (Throwable e) {
- logger.warn("Unable to patch Guava classes.", e);
- }
+ if (!patchingAttempted) {
+ patchingAttempted = true;
+ patchStopwatch();
+ patchCloseables();
+ patchPreconditions();
}
}
/**
* Makes Guava stopwatch look like the old version for compatibility with
hbase-server (for test purposes).
*/
- private static void patchStopwatch() throws Exception {
-
- ClassPool cp = ClassPool.getDefault();
- CtClass cc = cp.get("com.google.common.base.Stopwatch");
-
- // Expose the constructor for Stopwatch for old libraries who use the
pattern new Stopwatch().start().
- for (CtConstructor c : cc.getConstructors()) {
- if (!Modifier.isStatic(c.getModifiers())) {
- c.setModifiers(Modifier.PUBLIC);
+ private static void patchStopwatch() {
+ try {
+ ClassPool cp = ClassPool.getDefault();
+ CtClass cc = cp.get("com.google.common.base.Stopwatch");
+
+ // Expose the constructor for Stopwatch for old libraries who use the
pattern new Stopwatch().start().
+ for (CtConstructor c : cc.getConstructors()) {
+ if (!Modifier.isStatic(c.getModifiers())) {
+ c.setModifiers(Modifier.PUBLIC);
+ }
}
- }
- // Add back the Stopwatch.elapsedMillis() method for old consumers.
- CtMethod newMethod = CtNewMethod.make(
- "public long elapsedMillis() { return
elapsed(java.util.concurrent.TimeUnit.MILLISECONDS); }", cc);
- cc.addMethod(newMethod);
+ // Add back the Stopwatch.elapsedMillis() method for old consumers.
+ CtMethod newMethod = CtNewMethod.make(
+ "public long elapsedMillis() { return
elapsed(java.util.concurrent.TimeUnit.MILLISECONDS); }", cc);
+ cc.addMethod(newMethod);
- // Load the modified class instead of the original.
- cc.toClass();
+ // Load the modified class instead of the original.
+ cc.toClass();
- logger.info("Google's Stopwatch patched for old HBase Guava version.");
+ logger.info("Google's Stopwatch patched for old HBase Guava version.");
+ } catch (Exception e) {
+ logger.warn("Unable to patch Guava classes.", e);
Review comment:
I didn't change the behavior.
What do you suggest? Tests are executed by JUnit, so in case of an exception
they will fail just as well, but with a less clear message (because BaseTest
would fail to initialize).
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