/*
* Copyright © 2014 Cask Data, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package co.cask.cdap.internal.app.store;
import co.cask.cdap.api.common.Bytes;
import co.cask.cdap.api.data.stream.StreamSpecification;
import co.cask.cdap.api.dataset.table.Table;
import co.cask.cdap.app.ApplicationSpecification;
import co.cask.cdap.data2.dataset2.lib.table.MetadataStoreDataset;
import co.cask.cdap.internal.app.ApplicationSpecificationAdapter;
import co.cask.cdap.internal.app.DefaultApplicationSpecification;
import co.cask.cdap.proto.RunRecord;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.Map;
import javax.annotation.Nullable;
/**
* Store for application metadata
*/
public class AppMetadataStore extends MetadataStoreDataset {
private static final Logger LOG = LoggerFactory.getLogger(AppMetadataStore.class);
private static final Gson GSON;
static {
GsonBuilder builder = new GsonBuilder();
ApplicationSpecificationAdapter.addTypeAdapters(builder);
GSON = builder.create();
}
private static final String TYPE_APP_META = "appMeta";
private static final String TYPE_STREAM = "stream";
private static final String TYPE_RUN_RECORD_STARTED = "runRecordStarted";
private static final String TYPE_RUN_RECORD_COMPLETED = "runRecordCompleted";
private static final String TYPE_PROGRAM_ARGS = "programArgs";
public AppMetadataStore(Table table) {
super(table);
}
@Override
protected <T> byte[] serialize(T value) {
return Bytes.toBytes(GSON.toJson(value));
}
@Override
protected <T> T deserialize(byte[] serialized, Class<T> classOfT) {
return GSON.fromJson(Bytes.toString(serialized), classOfT);
}
@Nullable
public ApplicationMeta getApplication(String accountId, String appId) {
return get(new Key.Builder().add(TYPE_APP_META, accountId, appId).build(), ApplicationMeta.class);
}
public List<ApplicationMeta> getAllApplications(String accountId) {
return list(new Key.Builder().add(TYPE_APP_META, accountId).build(), ApplicationMeta.class);
}
public void writeApplication(String accountId, String appId, ApplicationSpecification spec, String archiveLocation) {
// NOTE: we use Gson underneath to do serde, as it doesn't serialize inner classes (which we use everywhere for
// specs - see forwarding specs), we want to wrap spec with DefaultApplicationSpecification
spec = DefaultApplicationSpecification.from(spec);
write(new Key.Builder().add(TYPE_APP_META, accountId, appId).build(),
new ApplicationMeta(appId, spec, archiveLocation));
}
public void deleteApplication(String accountId, String appId) {
deleteAll(new Key.Builder().add(TYPE_APP_META, accountId, appId).build());
}
public void deleteApplications(String accountId) {
deleteAll(new Key.Builder().add(TYPE_APP_META, accountId).build());
}
// todo: do we need appId? may be use from appSpec?
public void updateAppSpec(String accountId, String appId, ApplicationSpecification spec) {
// NOTE: we use Gson underneath to do serde, as it doesn't serialize inner classes (which we use everywhere for
// specs - see forwarding specs), we want to wrap spec with DefaultApplicationSpecification
spec = DefaultApplicationSpecification.from(spec);
LOG.trace("App spec to be updated: id: {}: spec: {}", appId, GSON.toJson(spec));
Key key = new Key.Builder().add(TYPE_APP_META, accountId, appId).build();
ApplicationMeta existing = get(key, ApplicationMeta.class);
if (existing == null) {
String msg = String.format("No meta for account %s app %s exists", accountId, appId);
LOG.error(msg);
throw new IllegalArgumentException(msg);
}
LOG.trace("Application exists in mds: id: {}, spec: {}", existing);
ApplicationMeta updated = ApplicationMeta.updateSpec(existing, spec);
write(key, updated);
for (StreamSpecification stream : spec.getStreams().values()) {
writeStream(accountId, stream);
}
}
public void recordProgramStart(String accountId, String appId, String programId, String pid, long startTs) {
write(new Key.Builder().add(TYPE_RUN_RECORD_STARTED, accountId, appId, programId, pid).build(),
new RunRecord(pid, startTs));
}
public void recordProgramStop(String accountId, String appId, String programId,
String pid, long stopTs, String endStatus) {
Key key = new Key.Builder().add(TYPE_RUN_RECORD_STARTED, accountId, appId, programId, pid).build();
RunRecord started = get(key, RunRecord.class);
if (started == null) {
String msg = String.format("No meta for started run record for account %s app %s program %s pid %s exists",
accountId, appId, programId, pid);
LOG.error(msg);
throw new IllegalArgumentException(msg);
}
deleteAll(key);
key = new Key.Builder()
.add(TYPE_RUN_RECORD_COMPLETED, accountId, appId, programId)
.add(getInvertedTsKeyPart(started.getStartTs()))
.add(pid).build();
write(key, new RunRecord(started, stopTs, endStatus));
}
public List<RunRecord> getRunHistory(String accountId, String appId, String programId,
final long startTime, final long endTime, int limit) {
Key prgrKey = new Key.Builder().add(TYPE_RUN_RECORD_COMPLETED, accountId, appId, programId).build();
// NOTE: ts is inverted to get latest first
Key start = new Key.Builder(prgrKey).add(getInvertedTsKeyPart(endTime)).build();
Key stop = new Key.Builder(prgrKey).add(getInvertedTsKeyPart(startTime)).build();
return list(start, stop, RunRecord.class, limit);
}
private long getInvertedTsKeyPart(long endTime) {
return Long.MAX_VALUE - endTime;
}
public void writeStream(String accountId, StreamSpecification spec) {
write(new Key.Builder().add(TYPE_STREAM, accountId, spec.getName()).build(), spec);
}
public StreamSpecification getStream(String accountId, String name) {
return get(new Key.Builder().add(TYPE_STREAM, accountId, name).build(), StreamSpecification.class);
}
public List<StreamSpecification> getAllStreams(String accountId) {
return list(new Key.Builder().add(TYPE_STREAM, accountId).build(), StreamSpecification.class);
}
public void deleteAllStreams(String accountId) {
deleteAll(new Key.Builder().add(TYPE_STREAM, accountId).build());
}
public void deleteStream(String accountId, String name) {
deleteAll(new Key.Builder().add(TYPE_STREAM, accountId, name).build());
}
public void writeProgramArgs(String accountId, String appId, String programName, Map<String, String> args) {
write(new Key.Builder().add(TYPE_PROGRAM_ARGS, accountId, appId, programName).build(), new ProgramArgs(args));
}
public ProgramArgs getProgramArgs(String accountId, String appId, String programName) {
return get(new Key.Builder().add(TYPE_PROGRAM_ARGS, accountId, appId, programName).build(), ProgramArgs.class);
}
public void deleteProgramArgs(String accountId, String appId, String programName) {
deleteAll(new Key.Builder().add(TYPE_PROGRAM_ARGS, accountId, appId, programName).build());
}
public void deleteProgramArgs(String accountId, String appId) {
deleteAll(new Key.Builder().add(TYPE_PROGRAM_ARGS, accountId, appId).build());
}
public void deleteProgramArgs(String accountId) {
deleteAll(new Key.Builder().add(TYPE_PROGRAM_ARGS, accountId).build());
}
public void deleteProgramHistory(String accountId, String appId) {
deleteAll(new Key.Builder().add(TYPE_RUN_RECORD_STARTED, accountId, appId).build());
deleteAll(new Key.Builder().add(TYPE_RUN_RECORD_COMPLETED, accountId, appId).build());
}
public void deleteProgramHistory(String accountId) {
deleteAll(new Key.Builder().add(TYPE_RUN_RECORD_STARTED, accountId).build());
deleteAll(new Key.Builder().add(TYPE_RUN_RECORD_COMPLETED, accountId).build());
}
}