proto.addCachePool(new CachePoolInfo("pool3").
setMode(new FsPermission((short)0777)));
proto.addCachePool(new CachePoolInfo("pool4").
setMode(new FsPermission((short)0)));
CacheDirectiveInfo alpha = new CacheDirectiveInfo.Builder().
setPath(new Path("/alpha")).
setPool("pool1").
build();
CacheDirectiveInfo beta = new CacheDirectiveInfo.Builder().
setPath(new Path("/beta")).
setPool("pool2").
build();
CacheDirectiveInfo delta = new CacheDirectiveInfo.Builder().
setPath(new Path("/delta")).
setPool("pool1").
build();
long alphaId = addAsUnprivileged(alpha);
long alphaId2 = addAsUnprivileged(alpha);
assertFalse("Expected to get unique directives when re-adding an "
+ "existing CacheDirectiveInfo",
alphaId == alphaId2);
long betaId = addAsUnprivileged(beta);
try {
addAsUnprivileged(new CacheDirectiveInfo.Builder().
setPath(new Path("/unicorn")).
setPool("no_such_pool").
build());
fail("expected an error when adding to a non-existent pool.");
} catch (InvalidRequestException ioe) {
GenericTestUtils.assertExceptionContains("Unknown pool", ioe);
}
try {
addAsUnprivileged(new CacheDirectiveInfo.Builder().
setPath(new Path("/blackhole")).
setPool("pool4").
build());
fail("expected an error when adding to a pool with " +
"mode 0 (no permissions for anyone).");
} catch (AccessControlException e) {
GenericTestUtils.
assertExceptionContains("Permission denied while accessing pool", e);
}
try {
addAsUnprivileged(new CacheDirectiveInfo.Builder().
setPath(new Path("/illegal:path/")).
setPool("pool1").
build());
fail("expected an error when adding a malformed path " +
"to the cache directives.");
} catch (IllegalArgumentException e) {
GenericTestUtils.assertExceptionContains("is not a valid DFS filename", e);
}
try {
addAsUnprivileged(new CacheDirectiveInfo.Builder().
setPath(new Path("/emptypoolname")).
setReplication((short)1).
setPool("").
build());
fail("expected an error when adding a cache " +
"directive with an empty pool name.");
} catch (InvalidRequestException e) {
GenericTestUtils.assertExceptionContains("Invalid empty pool name", e);
}
long deltaId = addAsUnprivileged(delta);
// We expect the following to succeed, because DistributedFileSystem
// qualifies the path.
long relativeId = addAsUnprivileged(
new CacheDirectiveInfo.Builder().
setPath(new Path("relative")).
setPool("pool1").
build());
RemoteIterator<CacheDirectiveEntry> iter;
iter = dfs.listCacheDirectives(null);
validateListAll(iter, alphaId, alphaId2, betaId, deltaId, relativeId );
iter = dfs.listCacheDirectives(
new CacheDirectiveInfo.Builder().setPool("pool3").build());
assertFalse(iter.hasNext());
iter = dfs.listCacheDirectives(
new CacheDirectiveInfo.Builder().setPool("pool1").build());
validateListAll(iter, alphaId, alphaId2, deltaId, relativeId );
iter = dfs.listCacheDirectives(
new CacheDirectiveInfo.Builder().setPool("pool2").build());
validateListAll(iter, betaId);
dfs.removeCacheDirective(betaId);
iter = dfs.listCacheDirectives(
new CacheDirectiveInfo.Builder().setPool("pool2").build());
assertFalse(iter.hasNext());
try {
dfs.removeCacheDirective(betaId);
fail("expected an error when removing a non-existent ID");
} catch (InvalidRequestException e) {
GenericTestUtils.assertExceptionContains("No directive with ID", e);
}
try {
proto.removeCacheDirective(-42l);
fail("expected an error when removing a negative ID");
} catch (InvalidRequestException e) {
GenericTestUtils.assertExceptionContains(
"Invalid negative ID", e);
}
try {
proto.removeCacheDirective(43l);
fail("expected an error when removing a non-existent ID");
} catch (InvalidRequestException e) {
GenericTestUtils.assertExceptionContains("No directive with ID", e);
}
dfs.removeCacheDirective(alphaId);
dfs.removeCacheDirective(alphaId2);
dfs.removeCacheDirective(deltaId);
dfs.modifyCacheDirective(new CacheDirectiveInfo.Builder().
setId(relativeId).
setReplication((short)555).
build());
iter = dfs.listCacheDirectives(null);
assertTrue(iter.hasNext());
CacheDirectiveInfo modified = iter.next().getInfo();
assertEquals(relativeId, modified.getId().longValue());
assertEquals((short)555, modified.getReplication().shortValue());
dfs.removeCacheDirective(relativeId);
iter = dfs.listCacheDirectives(null);
assertFalse(iter.hasNext());
// Verify that PBCDs with path "." work correctly
CacheDirectiveInfo directive =
new CacheDirectiveInfo.Builder().setPath(new Path("."))
.setPool("pool1").build();
long id = dfs.addCacheDirective(directive);
dfs.modifyCacheDirective(new CacheDirectiveInfo.Builder(
directive).setId(id).setReplication((short)2).build());