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package org.dcache.resilience.data;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import diskCacheV111.util.CacheException;
import diskCacheV111.util.PnfsId;
import org.dcache.resilience.TestBase;
import org.dcache.resilience.TestSynchronousExecutor.Mode;
import org.dcache.resilience.handlers.PoolTaskCompletionHandler;
import org.dcache.vehicles.FileAttributes;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
public final class FileOperationMapTest extends TestBase {
PnfsId pnfsId;
FileAttributes attributes;
FileOperation operation;
File checkpoint = new File("checkpoint");
@Before
public void setUp() throws CacheException, InterruptedException {
setUpBase();
setMocks();
createCounters();
createFileOperationHandler();
createFileOperationMap();
poolTaskCompletionHandler = new PoolTaskCompletionHandler();
poolTaskCompletionHandler.setMap(poolOperationMap);
wireFileOperationMap();
wireFileOperationHandler();
initializeCounters();
fileOperationMap.initialize(() -> {});
fileOperationMap.setCopyThreads(1);
}
@Test
public void shouldMakeCopiesForFileWithUnmappedStorageUnit()
throws CacheException, IOException {
givenANewPnfsIdWithUnmappedStorageUnit();
afterOperationAdded(1);
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldMakeCopiesForFileWithStorageUnitMatchingPattern()
throws CacheException, IOException {
givenANewPnfsIdWithStorageUnitMatchingPattern();
afterOperationAdded(1);
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldBehaveLikeCancelAllWhenOperationIsVoided()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(3);
whenScanIsRun();
whenOperationIsVoided();
whenScanIsRun();
assertNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldNotRemoveEntryWhenUpdateFailsOnLastTryButOtherSourceExists()
throws CacheException, IOException {
givenAPnfsIdUpdateFromScan();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenOperationFailsWithRetriableError();
whenScanIsRun();
whenOperationFailsWithRetriableError();
/*
* Another source exists. Should not fail terminally.
*/
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldNotRemoveEntryWhenUpdateFailsWithRetriableError()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenOperationFailsWithRetriableError();
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldNotRemoveEntryWhenUpdateSuccessfulButMoreWork()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(2);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenOperationSucceedsFor(operation.getPnfsId());
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
assertEquals(1, fileOperationMap.getOperation(
operation.getPnfsId()).getOpCount());
}
@Test
public void shouldNotRemoveEntryWhenUpdateSuccessfulButNewRequestArrived()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenOperationSucceedsFor(operation.getPnfsId());
givenAnotherLocationForPnfsId();
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
assertEquals(1, fileOperationMap.getOperation(
operation.getPnfsId()).getOpCount());
}
@Test
public void shouldNotRemoveWhenCancelledOperationHasMoreWork()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(3);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenRunningOperationIsCancelled();
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
assertEquals(2, fileOperationMap.getOperation(
operation.getPnfsId()).getOpCount());
}
@Test
public void shouldNotReorderOperationWhenFailsButMoreTries()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(2);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenOperationFailsWithRetriableError();
givenASecondPnfsId();
afterOperationAdded(1);
whenScanIsRun();
assertThatOperationIsRunning(pnfsId);
}
@Test
public void shouldRemoveEntryWhenUpdateFailsOnLastTryOfRetriableError()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenOperationFailsWithRetriableError();
whenScanIsRun();
whenOperationFailsWithRetriableError();
/*
* This should set retry with new source and target, but
* there should be no other source when it retries, and a failure
* should result.
*/
whenScanIsRun();
whenVerifyIsRun();
whenScanIsRun();
assertNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldRemoveEntryWhenUpdateFailsWithFatalError()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenOperationFailsWithFatalError();
whenScanIsRun();
assertNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldRemoveEntryWhenUpdateSuccessfulAndNoMoreWork()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenOperationSucceedsFor(operation.getPnfsId());
whenScanIsRun();
assertNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldRemoveWhenEntireOperationIsCancelled()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(3);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenEntireOperationIsCancelled();
whenScanIsRun();
assertNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@Test
public void shouldReorderOperationWhenCompletesButMoreWork()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(2);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenScanIsRun();
whenOperationSucceedsFor(operation.getPnfsId());
givenASecondPnfsId();
afterOperationAdded(1);
whenScanIsRun();
assertThatOperationIsNotRunning(pnfsId);
assertThatOperationIsRunning(operation.getPnfsId());
}
@Test
public void shouldResetEntryWhenUpdateFailsWithNewLocationError()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(1);
afterSourceAndTargetAreUpdatedTo(
attributes.getLocations().iterator().next(),
"resilient_pool-12");
whenOperationFailsWithNewLocationError();
whenScanIsRun();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
assertEquals(0, fileOperationMap.getOperation(
operation.getPnfsId()).getRetried());
}
@Test
public void shouldSaveAndRestoreCheckpointedOperation()
throws CacheException, IOException {
givenANewPnfsId();
afterOperationAdded(3);
whenSaveIsCalled();
whenLoadIsCalled();
assertNotNull(fileOperationMap.getOperation(operation.getPnfsId()));
}
@After
public void tearDown() {
if (checkpoint.exists()) {
checkpoint.delete();
}
}
private void afterOperationAdded(int count) throws CacheException {
PnfsId pnfsId = attributes.getPnfsId();
String pool = attributes.getLocations().iterator().next();
Integer pindex = poolInfoMap.getPoolIndex(pool);
Integer gindex = poolInfoMap.getResilientPoolGroup(pindex);
Integer sindex = poolInfoMap.getStorageUnitIndex(attributes);
FileUpdate update = new FileUpdate(pnfsId, pool,
MessageType.ADD_CACHE_LOCATION, pindex, gindex, sindex,
attributes);
update.setCount(count);
fileOperationMap.register(update);
operation = new FileOperation(
fileOperationMap.getOperation(attributes.getPnfsId()));
}
private void afterSourceAndTargetAreUpdatedTo(String source,
String target) {
fileOperationMap.updateOperation(attributes.getPnfsId(), source,
target);
}
private void assertThatOperationIsNotRunning(PnfsId pnfsId) {
assertNotEquals(pnfsId, fileOperationMap.running.peek().getPnfsId());
}
private void assertThatOperationIsRunning(PnfsId pnfsId) {
assertEquals(pnfsId, fileOperationMap.running.peek().getPnfsId());
}
private void givenANewPnfsId() throws CacheException {
loadNewFilesOnPoolsWithNoTags();
attributes = aReplicaOnlineFileWithNoTags();
}
private void givenANewPnfsIdWithUnmappedStorageUnit() throws CacheException {
loadNewFilesWithUnmappedStorageUnit();
attributes = aReplicaOnlineFileWithNoTags();
}
private void givenANewPnfsIdWithStorageUnitMatchingPattern() throws CacheException {
turnOnRegex();
loadNewFilesWithStorageUnitMatchingPattern();
attributes = aReplicaOnlineFileWithNoTags();
}
private void givenAPnfsIdUpdateFromScan() throws CacheException {
loadFilesWithRequiredLocations();
attributes = aReplicaOnlineFileWithNoTags();
}
private void givenASecondPnfsId() throws CacheException {
pnfsId = attributes.getPnfsId();
attributes = aReplicaOnlineFileWithHostTag();
}
private void givenAnotherLocationForPnfsId() {
fileOperationMap.getOperation(operation.getPnfsId()).incrementCount();
}
private void setMocks() {
setShortExecutionMode(Mode.NOP);
setLongExecutionMode(Mode.NOP);
}
private void whenEntireOperationIsCancelled() {
fileOperationMap.cancel(operation.getPnfsId(), true);
}
private void whenLoadIsCalled() throws IOException {
fileOperationMap.reload();
}
private void whenOperationFailsWithFatalError() {
fileOperationMap.updateOperation(operation.getPnfsId(),
new CacheException(CacheException.DEFAULT_ERROR_CODE,
FORCED_FAILURE.toString()));
}
private void whenOperationFailsWithNewLocationError() {
fileOperationMap.updateOperation(operation.getPnfsId(),
new CacheException(CacheException.FILE_NOT_FOUND,
FORCED_FAILURE.toString()));
}
private void whenOperationFailsWithRetriableError() {
fileOperationMap.updateOperation(operation.getPnfsId(),
new CacheException(CacheException.HSM_DELAY_ERROR,
FORCED_FAILURE.toString()));
}
private void whenOperationIsVoided() {
fileOperationMap.voidOperation(operation.getPnfsId());
}
private void whenOperationSucceedsFor(PnfsId pnfsId) {
/*
* Simulate previous launch without doing a full scan.
*/
fileOperationMap.updateOperation(pnfsId, null);
}
private void whenRunningOperationIsCancelled() {
fileOperationMap.cancel(operation.getPnfsId(), false);
}
private void whenSaveIsCalled() throws IOException {
fileOperationMap.setCheckpointFilePath(checkpoint.getAbsolutePath());
fileOperationMap.checkpointer.save();
}
private void whenScanIsRun() throws IOException {
fileOperationMap.scan();
}
private void whenVerifyIsRun() throws IOException {
fileOperationMap.getOperation(operation.getPnfsId()).getTask().call();
}
}