/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate licenses this file
* to you 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.executor.transport;
import com.google.common.annotations.VisibleForTesting;
import io.crate.analyze.CreateRepositoryAnalyzedStatement;
import io.crate.analyze.DropRepositoryAnalyzedStatement;
import io.crate.exceptions.SQLExceptions;
import io.crate.exceptions.RepositoryUnknownException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.cluster.repositories.delete.DeleteRepositoryRequest;
import org.elasticsearch.action.admin.cluster.repositories.delete.DeleteRepositoryResponse;
import org.elasticsearch.action.admin.cluster.repositories.delete.TransportDeleteRepositoryAction;
import org.elasticsearch.action.admin.cluster.repositories.put.PutRepositoryRequest;
import org.elasticsearch.action.admin.cluster.repositories.put.PutRepositoryResponse;
import org.elasticsearch.action.admin.cluster.repositories.put.TransportPutRepositoryAction;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.cluster.metadata.RepositoriesMetaData;
import org.elasticsearch.cluster.metadata.RepositoryMetaData;
import org.elasticsearch.common.inject.CreationException;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.Singleton;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.repositories.RepositoryException;
import javax.annotation.Nullable;
import java.util.concurrent.CompletableFuture;
@Singleton
public class RepositoryService {
private static final Logger LOGGER = Loggers.getLogger(RepositoryService.class);
private final ClusterService clusterService;
private final TransportDeleteRepositoryAction deleteRepositoryAction;
private final TransportPutRepositoryAction putRepositoryAction;
@Inject
public RepositoryService(ClusterService clusterService,
TransportDeleteRepositoryAction deleteRepositoryAction,
TransportPutRepositoryAction putRepositoryAction) {
this.clusterService = clusterService;
this.deleteRepositoryAction = deleteRepositoryAction;
this.putRepositoryAction = putRepositoryAction;
}
@Nullable
public RepositoryMetaData getRepository(String repositoryName) {
RepositoriesMetaData repositories = clusterService.state().metaData().custom(RepositoriesMetaData.TYPE);
if (repositories != null) {
return repositories.repository(repositoryName);
}
return null;
}
public void failIfRepositoryDoesNotExist(String repositoryName) {
if (getRepository(repositoryName) == null) {
throw new RepositoryUnknownException(repositoryName);
}
}
public CompletableFuture<Long> execute(DropRepositoryAnalyzedStatement analyzedStatement) {
final CompletableFuture<Long> future = new CompletableFuture<>();
final String repoName = analyzedStatement.repositoryName();
deleteRepositoryAction.execute(
new DeleteRepositoryRequest(repoName),
new ActionListener<DeleteRepositoryResponse>() {
@Override
public void onResponse(DeleteRepositoryResponse deleteRepositoryResponse) {
if (!deleteRepositoryResponse.isAcknowledged()) {
LOGGER.info("delete repository '{}' not acknowledged", repoName);
}
future.complete(1L);
}
@Override
public void onFailure(Exception e) {
future.completeExceptionally(e);
}
}
);
return future;
}
public CompletableFuture<Long> execute(CreateRepositoryAnalyzedStatement statement) {
final CompletableFuture<Long> result = new CompletableFuture<>();
final String repoName = statement.repositoryName();
PutRepositoryRequest request = new PutRepositoryRequest(repoName);
request.type(statement.repositoryType());
request.settings(statement.settings());
putRepositoryAction.execute(request, new ActionListener<PutRepositoryResponse>() {
@Override
public void onResponse(PutRepositoryResponse putRepositoryResponse) {
result.complete(1L);
}
@Override
public void onFailure(Exception e) {
final Throwable t = convertRepositoryException(e);
// in case the put repo action fails in the verificationPhase the repository got already created
// but an exception is raised anyway.
// --> remove the repo and then return the exception to the user
dropIfExists(repoName, new Runnable() {
@Override
public void run() {
result.completeExceptionally(t);
}
});
}
});
return result;
}
private void dropIfExists(String repoName, Runnable callback) {
RepositoryMetaData repository = getRepository(repoName);
if (repository == null) {
callback.run();
} else {
execute(new DropRepositoryAnalyzedStatement(repoName)).whenComplete(
(Long result, Throwable t) -> {
if (t != null) {
LOGGER.error("Error occurred whilst trying to delete repository", t);
}
callback.run();
}
);
}
}
@VisibleForTesting
static Throwable convertRepositoryException(Throwable e) {
e = SQLExceptions.unwrap(e);
Throwable cause = e.getCause();
/**
* usually the exception looks like:
* RepositoryException
* cause: CreationException (from guice)
* cause: RepositoryException (with a message that includes the real failure reason
*
* results in something like: [foo] failed to create repository: [foo] missing location
* instead of just: [foo] failed to create repository
*/
if (e instanceof RepositoryException && cause != null) {
String msg = e.getMessage();
if (cause instanceof CreationException && cause.getCause() != null) {
msg += ": " + cause.getCause().getMessage();
}
return new RepositoryException("", msg, e);
} else {
return e;
}
}
}