VGalaxies commented on code in PR #2301: URL: https://github.com/apache/incubator-hugegraph/pull/2301#discussion_r1320780010
########## hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/meta/EtcdMetaDriver.java: ########## @@ -0,0 +1,331 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with this + * work for additional information regarding copyright ownership. The ASF + * 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. + */ + +package org.apache.hugegraph.meta; + +import java.io.File; +import java.net.URI; +import java.nio.charset.Charset; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.concurrent.ExecutionException; +import java.util.function.Consumer; + +import org.apache.commons.io.FileUtils; +import org.apache.hugegraph.HugeException; +import org.apache.hugegraph.meta.lock.DistributedLock; +import org.apache.hugegraph.meta.lock.LockResult; +import org.apache.hugegraph.type.define.CollectionType; +import org.apache.hugegraph.util.E; +import org.apache.hugegraph.util.collection.CollectionFactory; + +import com.google.common.base.Strings; + +import io.etcd.jetcd.ByteSequence; +import io.etcd.jetcd.Client; +import io.etcd.jetcd.ClientBuilder; +import io.etcd.jetcd.KV; +import io.etcd.jetcd.KeyValue; +import io.etcd.jetcd.kv.GetResponse; +import io.etcd.jetcd.lease.LeaseKeepAliveResponse; +import io.etcd.jetcd.options.DeleteOption; +import io.etcd.jetcd.options.GetOption; +import io.etcd.jetcd.options.WatchOption; +import io.etcd.jetcd.watch.WatchEvent; +import io.etcd.jetcd.watch.WatchResponse; +import io.netty.handler.ssl.ApplicationProtocolConfig; +import io.netty.handler.ssl.ApplicationProtocolNames; +import io.netty.handler.ssl.SslContext; +import io.netty.handler.ssl.SslContextBuilder; +import io.netty.handler.ssl.SslProvider; + +public class EtcdMetaDriver implements MetaDriver { + + private Client client; + private DistributedLock lock; + + public EtcdMetaDriver(String trustFile, String clientCertFile, + String clientKeyFile, Object... endpoints) { + ClientBuilder builder = this.etcdMetaDriverBuilder(endpoints); + + SslContext sslContext = openSslContext(trustFile, clientCertFile, + clientKeyFile); + this.client = builder.sslContext(sslContext).build(); + this.lock = DistributedLock.getInstance(this.client); + } + + public EtcdMetaDriver(Object... endpoints) { + ClientBuilder builder = this.etcdMetaDriverBuilder(endpoints); + this.client = builder.build(); + this.lock = DistributedLock.getInstance(this.client); + } + + private static ByteSequence toByteSequence(String content) { + return ByteSequence.from(content.getBytes()); + } + + private static boolean isEtcdPut(WatchEvent event) { + return event.getEventType() == WatchEvent.EventType.PUT; + } + + public static SslContext openSslContext(String trustFile, + String clientCertFile, + String clientKeyFile) { + SslContext ssl; + try { + File trustManagerFile = FileUtils.getFile(trustFile); + File keyCertChainFile = FileUtils.getFile(clientCertFile); + File KeyFile = FileUtils.getFile(clientKeyFile); + ApplicationProtocolConfig alpn = new ApplicationProtocolConfig( + ApplicationProtocolConfig.Protocol.ALPN, + ApplicationProtocolConfig.SelectorFailureBehavior.NO_ADVERTISE, + + ApplicationProtocolConfig.SelectedListenerFailureBehavior + .ACCEPT, + ApplicationProtocolNames.HTTP_2); + + ssl = SslContextBuilder.forClient() + .applicationProtocolConfig(alpn) + .sslProvider(SslProvider.OPENSSL) + .trustManager(trustManagerFile) + .keyManager(keyCertChainFile, KeyFile) + .build(); + } catch (Exception e) { + throw new HugeException("Failed to open ssl context", e); + } + return ssl; + } + + public ClientBuilder etcdMetaDriverBuilder(Object... endpoints) { + int length = endpoints.length; + ClientBuilder builder = null; + if (endpoints[0] instanceof List && endpoints.length == 1) { + builder = Client.builder() + .endpoints(((List<String>) endpoints[0]) + .toArray(new String[0])); + } else if (endpoints[0] instanceof String) { + for (int i = 1; i < length; i++) { + E.checkArgument(endpoints[i] instanceof String, + "Inconsistent endpoint %s(%s) with %s(%s)", + endpoints[i], endpoints[i].getClass(), + endpoints[0], endpoints[0].getClass()); + } + builder = Client.builder().endpoints((String[]) endpoints); + } else if (endpoints[0] instanceof URI) { + for (int i = 1; i < length; i++) { + E.checkArgument(endpoints[i] instanceof String, + "Invalid endpoint %s(%s)", + endpoints[i], endpoints[i].getClass(), + endpoints[0], endpoints[0].getClass()); + } + builder = Client.builder().endpoints((URI[]) endpoints); + } else { + E.checkArgument(false, "Invalid endpoint %s(%s)", + endpoints[0], endpoints[0].getClass()); + } + return builder; + } + + @Override + public long keepAlive(String key, long leaseId) { + try { + LeaseKeepAliveResponse response = + this.client.getLeaseClient().keepAliveOnce(leaseId).get(); + return response.getID(); + } catch (InterruptedException | ExecutionException e) { + // keepAlive once Failed + return 0; + } + } + + @Override + public String get(String key) { + List<KeyValue> keyValues; + KV kvClient = this.client.getKVClient(); + try { + keyValues = kvClient.get(toByteSequence(key)) + .get().getKvs(); + } catch (InterruptedException | ExecutionException e) { + throw new HugeException("Failed to get key '%s' from etcd", e, key); + } + + if (keyValues.size() > 0) { + return keyValues.get(0).getValue().toString(Charset.defaultCharset()); + } + + return null; + } + + @Override + public void put(String key, String value) { + KV kvClient = this.client.getKVClient(); + try { + kvClient.put(toByteSequence(key), toByteSequence(value)).get(); + } catch (InterruptedException | ExecutionException e) { + try { + kvClient.delete(toByteSequence(key)).get(); + } catch (Throwable t) { + throw new HugeException("Failed to put '%s:%s' to etcd", + e, key, value); + } + } + } + + @Override + public void delete(String key) { + KV kvClient = this.client.getKVClient(); + try { + kvClient.delete(toByteSequence(key)).get(); + } catch (InterruptedException | ExecutionException e) { + throw new HugeException( + "Failed to delete key '%s' from etcd", e, key); + } + } + + @Override + public void deleteWithPrefix(String prefix) { + KV kvClient = this.client.getKVClient(); + try { + DeleteOption option = DeleteOption.newBuilder() + .isPrefix(true) + .build(); + kvClient.delete(toByteSequence(prefix), option); + } catch (Throwable e) { + throw new HugeException( + "Failed to delete prefix '%s' from etcd", e, prefix); + } + } + + @Override + public Map<String, String> scanWithPrefix(String prefix) { + GetOption getOption = GetOption.newBuilder() + .isPrefix(true) + .build(); + GetResponse response; + try { + response = this.client.getKVClient().get(toByteSequence(prefix), + getOption).get(); + } catch (InterruptedException | ExecutionException e) { + throw new HugeException("Failed to scan etcd with prefix '%s'", + e, prefix); + } + int size = (int) response.getCount(); + Map<String, String> keyValues = CollectionFactory.newMap( + CollectionType.JCF, size); + for (KeyValue kv : response.getKvs()) { + String key = kv.getKey().toString(Charset.defaultCharset()); + String value = kv.getValue().size() == 0 ? "" : + kv.getValue().toString(Charset.defaultCharset()); + keyValues.put(key, value); + } + return keyValues; + } + + @Override + public <T> List<String> extractValuesFromResponse(T response) { + List<String> values = new ArrayList<>(); + E.checkArgument(response instanceof WatchResponse, + "Invalid response type %s", response.getClass()); + for (WatchEvent event : ((WatchResponse) response).getEvents()) { + // Skip if not etcd PUT event + if (!isEtcdPut(event)) { + return null; + } + + String value = event.getKeyValue().getValue() + .toString(Charset.defaultCharset()); + values.add(value); + } + return values; + } + + @Override + public <T> Map<String, String> extractKVFromResponse(T response) { + E.checkArgument(response instanceof WatchResponse, + "Invalid response type %s", response.getClass()); + + Map<String, String> resultMap = new HashMap<>(); + for (WatchEvent event : ((WatchResponse) response).getEvents()) { + // Skip if not etcd PUT event + if (!isEtcdPut(event)) { + continue; + } + + String key = event.getKeyValue().getKey().toString(Charset.defaultCharset()); + String value = event.getKeyValue().getValue() + .toString(Charset.defaultCharset()); + if (Strings.isNullOrEmpty(key)) { + continue; + } + resultMap.put(key, value); + } + return resultMap; + } + + @Override + public LockResult tryLock(String key, long ttl, long timeout) { + return this.lock.tryLock(key, ttl, timeout); + } + + @Override + public LockResult lock(String key, long ttl) { + return this.lock.lock(key, ttl); + } + + @Override + public boolean isLocked(String key) { + try { + long size = this.client.getKVClient().get(toByteSequence(key)) + .get().getCount(); + + if (size > 0) { + return true; + } else { + return false; + } Review Comment: done ########## hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/meta/PdMetaDriver.java: ########## @@ -0,0 +1,250 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with this + * work for additional information regarding copyright ownership. The ASF + * 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. + */ + +package org.apache.hugegraph.meta; + +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Date; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.function.Consumer; + +import org.apache.hugegraph.HugeException; +import org.apache.hugegraph.meta.lock.LockResult; +import org.apache.hugegraph.meta.lock.PdDistributedLock; +import org.apache.hugegraph.pd.client.KvClient; +import org.apache.hugegraph.pd.client.PDClient; +import org.apache.hugegraph.pd.client.PDConfig; +import org.apache.hugegraph.pd.common.PDException; +import org.apache.hugegraph.pd.grpc.kv.KResponse; +import org.apache.hugegraph.pd.grpc.kv.LockResponse; +import org.apache.hugegraph.pd.grpc.kv.ScanPrefixResponse; +import org.apache.hugegraph.pd.grpc.kv.TTLResponse; +import org.apache.hugegraph.pd.grpc.kv.WatchEvent; +import org.apache.hugegraph.pd.grpc.kv.WatchResponse; +import org.apache.hugegraph.pd.grpc.kv.WatchType; + +import com.google.common.base.Strings; + +public class PdMetaDriver implements MetaDriver { + + KvClient<WatchResponse> client = null; Review Comment: done ########## hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/meta/PdMetaDriver.java: ########## @@ -0,0 +1,250 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with this + * work for additional information regarding copyright ownership. The ASF + * 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. + */ + +package org.apache.hugegraph.meta; + +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Date; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.function.Consumer; + +import org.apache.hugegraph.HugeException; +import org.apache.hugegraph.meta.lock.LockResult; +import org.apache.hugegraph.meta.lock.PdDistributedLock; +import org.apache.hugegraph.pd.client.KvClient; +import org.apache.hugegraph.pd.client.PDClient; +import org.apache.hugegraph.pd.client.PDConfig; +import org.apache.hugegraph.pd.common.PDException; +import org.apache.hugegraph.pd.grpc.kv.KResponse; +import org.apache.hugegraph.pd.grpc.kv.LockResponse; +import org.apache.hugegraph.pd.grpc.kv.ScanPrefixResponse; +import org.apache.hugegraph.pd.grpc.kv.TTLResponse; +import org.apache.hugegraph.pd.grpc.kv.WatchEvent; +import org.apache.hugegraph.pd.grpc.kv.WatchResponse; +import org.apache.hugegraph.pd.grpc.kv.WatchType; + +import com.google.common.base.Strings; + +public class PdMetaDriver implements MetaDriver { + + KvClient<WatchResponse> client = null; + PDClient pdClient = null; + private PdDistributedLock lock; + + public PdMetaDriver(String pdPeer) { + PDConfig pdConfig = PDConfig.of(pdPeer); + this.client = new KvClient<>(pdConfig); + this.pdClient = PDClient.create(pdConfig); + lock = new PdDistributedLock(this.client); Review Comment: done -- This is an automated message from the Apache Git Service. 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