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Java SDK for Milvus, a distributed high-performance vector database.
/*
* 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 io.milvus.v2.utils;
import io.grpc.ManagedChannel;
import io.grpc.ManagedChannelBuilder;
import io.grpc.Metadata;
import io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts;
import io.grpc.netty.shaded.io.grpc.netty.NettyChannelBuilder;
import io.grpc.netty.shaded.io.netty.handler.ssl.SslContext;
import io.grpc.stub.MetadataUtils;
import io.milvus.grpc.*;
import io.milvus.v2.client.ConnectConfig;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.concurrent.TimeUnit;
public class ClientUtils {
Logger logger = LoggerFactory.getLogger(ClientUtils.class);
RpcUtils rpcUtils = new RpcUtils();
public ManagedChannel getChannel(ConnectConfig connectConfig){
ManagedChannel channel = null;
Metadata metadata = new Metadata();
if (connectConfig.getAuthorization() != null) {
metadata.put(Metadata.Key.of("authorization", Metadata.ASCII_STRING_MARSHALLER), Base64.getEncoder().encodeToString(connectConfig.getAuthorization().getBytes(StandardCharsets.UTF_8)));
}
if (StringUtils.isNotEmpty(connectConfig.getDbName())) {
metadata.put(Metadata.Key.of("dbname", Metadata.ASCII_STRING_MARSHALLER), connectConfig.getDbName());
}
try {
if (StringUtils.isNotEmpty(connectConfig.getServerPemPath())) {
// one-way tls
SslContext sslContext = GrpcSslContexts.forClient()
.trustManager(new File(connectConfig.getServerPemPath()))
.build();
NettyChannelBuilder builder = NettyChannelBuilder.forAddress(connectConfig.getHost(), connectConfig.getPort())
.overrideAuthority(connectConfig.getServerName())
.sslContext(sslContext)
.maxInboundMessageSize(Integer.MAX_VALUE)
.keepAliveTime(connectConfig.getKeepAliveTimeMs(), TimeUnit.MILLISECONDS)
.keepAliveTimeout(connectConfig.getKeepAliveTimeoutMs(), TimeUnit.MILLISECONDS)
.keepAliveWithoutCalls(connectConfig.isKeepAliveWithoutCalls())
.idleTimeout(connectConfig.getIdleTimeoutMs(), TimeUnit.MILLISECONDS)
.intercept(MetadataUtils.newAttachHeadersInterceptor(metadata));
if(connectConfig.isSecure()){
builder.useTransportSecurity();
}
channel = builder.build();
} else if (StringUtils.isNotEmpty(connectConfig.getClientPemPath())
&& StringUtils.isNotEmpty(connectConfig.getClientKeyPath())
&& StringUtils.isNotEmpty(connectConfig.getCaPemPath())) {
// tow-way tls
SslContext sslContext = GrpcSslContexts.forClient()
.trustManager(new File(connectConfig.getCaPemPath()))
.keyManager(new File(connectConfig.getClientPemPath()), new File(connectConfig.getClientKeyPath()))
.build();
NettyChannelBuilder builder = NettyChannelBuilder.forAddress(connectConfig.getHost(), connectConfig.getPort())
.sslContext(sslContext)
.maxInboundMessageSize(Integer.MAX_VALUE)
.keepAliveTime(connectConfig.getKeepAliveTimeMs(), TimeUnit.MILLISECONDS)
.keepAliveTimeout(connectConfig.getKeepAliveTimeoutMs(), TimeUnit.MILLISECONDS)
.keepAliveWithoutCalls(connectConfig.isKeepAliveWithoutCalls())
.idleTimeout(connectConfig.getIdleTimeoutMs(), TimeUnit.MILLISECONDS)
.intercept(MetadataUtils.newAttachHeadersInterceptor(metadata));
if (connectConfig.getSecure()) {
builder.useTransportSecurity();
}
if (StringUtils.isNotEmpty(connectConfig.getServerName())) {
builder.overrideAuthority(connectConfig.getServerName());
}
channel = builder.build();
} else {
// no tls
ManagedChannelBuilder builder = ManagedChannelBuilder.forAddress(connectConfig.getHost(), connectConfig.getPort())
.usePlaintext()
.maxInboundMessageSize(Integer.MAX_VALUE)
.keepAliveTime(connectConfig.getKeepAliveTimeMs(), TimeUnit.MILLISECONDS)
.keepAliveTimeout(connectConfig.getKeepAliveTimeoutMs(), TimeUnit.MILLISECONDS)
.keepAliveWithoutCalls(connectConfig.isKeepAliveWithoutCalls())
.idleTimeout(connectConfig.getIdleTimeoutMs(), TimeUnit.MILLISECONDS)
.intercept(MetadataUtils.newAttachHeadersInterceptor(metadata));
if(connectConfig.isSecure()){
builder.useTransportSecurity();
}
channel = builder.build();
}
} catch (IOException e) {
logger.error("Failed to open credentials file, error:{}\n", e.getMessage());
}
assert channel != null;
return channel;
}
public void checkDatabaseExist(MilvusServiceGrpc.MilvusServiceBlockingStub blockingStub, String dbName) {
String title = String.format("Check database %s exist", dbName);
ListDatabasesRequest listDatabasesRequest = ListDatabasesRequest.newBuilder().build();
ListDatabasesResponse response = blockingStub.listDatabases(listDatabasesRequest);
rpcUtils.handleResponse(title, response.getStatus());
if (!response.getDbNamesList().contains(dbName)) {
throw new IllegalArgumentException("Database " + dbName + " not exist");
}
}
public String getServerVersion(MilvusServiceGrpc.MilvusServiceBlockingStub blockingStub) {
GetVersionResponse response = blockingStub.getVersion(GetVersionRequest.newBuilder().build());
rpcUtils.handleResponse("Get server version", response.getStatus());
return response.getVersion();
}
}