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Replace TransactionManager.Work with Supplier (#397)

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* Replace TransactionManager.Work with Supplier

Replace the "Work" class with the equivalent java.util.function.Supplier.
This commit is contained in:
Michael Muller 2019-12-04 12:00:13 -05:00 • committed by GitHub
parent 3d3d390a9f
commit 1e1c8cdd80
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8 changed files with 127 additions and 106 deletions
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134
core/src/test/java/google/registry/model/ofy/OfyTest.java
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@ -45,12 +45,12 @@ import google.registry.model.contact.ContactResource;
import google.registry.model.domain.DomainBase;
import google.registry.model.eppcommon.Trid;
import google.registry.model.reporting.HistoryEntry;
import google.registry.model.transaction.TransactionManager.Work;
import google.registry.testing.AppEngineRule;
import google.registry.testing.DatastoreHelper;
import google.registry.testing.FakeClock;
import google.registry.util.SystemClock;
import java.util.ConcurrentModificationException;
import java.util.function.Supplier;
import org.joda.time.DateTime;
import org.junit.Before;
import org.junit.Rule;
@ -239,72 +239,88 @@ public class OfyTest {
@Test
public void testTransact_transientFailureException_retries() {
assertThat(tm().transact(new Work<Integer>() {
assertThat(
tm().transact(
new Supplier<Integer>() {
int count = 0;
int count = 0;
@Override
public Integer run() {
count++;
if (count == 3) {
return count;
}
throw new TransientFailureException("");
}})).isEqualTo(3);
@Override
public Integer get() {
count++;
if (count == 3) {
return count;
}
throw new TransientFailureException("");
}
}))
.isEqualTo(3);
}
@Test
public void testTransact_datastoreTimeoutException_noManifest_retries() {
assertThat(tm().transact(new Work<Integer>() {
assertThat(
tm().transact(
new Supplier<Integer>() {
int count = 0;
int count = 0;
@Override
public Integer run() {
// We don't write anything in this transaction, so there is no commit log manifest.
// Therefore it's always safe to retry since nothing got written.
count++;
if (count == 3) {
return count;
}
throw new DatastoreTimeoutException("");
}})).isEqualTo(3);
@Override
public Integer get() {
// We don't write anything in this transaction, so there is no commit log
// manifest.
// Therefore it's always safe to retry since nothing got written.
count++;
if (count == 3) {
return count;
}
throw new DatastoreTimeoutException("");
}
}))
.isEqualTo(3);
}
@Test
public void testTransact_datastoreTimeoutException_manifestNotWrittenToDatastore_retries() {
assertThat(tm().transact(new Work<Integer>() {
assertThat(
tm().transact(
new Supplier<Integer>() {
int count = 0;
int count = 0;
@Override
public Integer run() {
// There will be something in the manifest now, but it won't be committed if we throw.
ofy().save().entity(someObject);
count++;
if (count == 3) {
return count;
}
throw new DatastoreTimeoutException("");
}})).isEqualTo(3);
@Override
public Integer get() {
// There will be something in the manifest now, but it won't be committed if
// we throw.
ofy().save().entity(someObject);
count++;
if (count == 3) {
return count;
}
throw new DatastoreTimeoutException("");
}
}))
.isEqualTo(3);
}
@Test
public void testTransact_datastoreTimeoutException_manifestWrittenToDatastore_returnsSuccess() {
// A work unit that throws if it is ever retried.
Work work = new Work<Void>() {
boolean firstCallToVrun = true;
Supplier work =
new Supplier<Void>() {
boolean firstCallToVrun = true;
@Override
public Void run() {
if (firstCallToVrun) {
firstCallToVrun = false;
ofy().save().entity(someObject);
return null;
}
fail("Shouldn't have retried.");
return null;
}};
@Override
public Void get() {
if (firstCallToVrun) {
firstCallToVrun = false;
ofy().save().entity(someObject);
return null;
}
fail("Shouldn't have retried.");
return null;
}
};
// A commit logged work that throws on the first attempt to get its result.
CommitLoggedWork<Void> commitLoggedWork = new CommitLoggedWork<Void>(work, new SystemClock()) {
boolean firstCallToGetResult = true;
@ -323,18 +339,22 @@ public class OfyTest {
}
void doReadOnlyRetryTest(final RuntimeException e) {
assertThat(tm().transactNewReadOnly(new Work<Integer>() {
assertThat(
tm().transactNewReadOnly(
new Supplier<Integer>() {
int count = 0;
int count = 0;
@Override
public Integer run() {
count++;
if (count == 3) {
return count;
}
throw e;
}})).isEqualTo(3);
@Override
public Integer get() {
count++;
if (count == 3) {
return count;
}
throw new TransientFailureException("");
}
}))
.isEqualTo(3);
}
@Test