forked from helidon-io/helidon
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Adds documentation for gRPC Client in SE.
Signed-off-by: Santiago Pericas-Geertsen <[email protected]>
- Loading branch information
Showing
2 changed files
with
356 additions
and
4 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
189 changes: 189 additions & 0 deletions
189
docs/src/main/java/io/helidon/docs/se/grpc/ClientSnippets.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,189 @@ | ||
| /* | ||
| * Copyright (c) 2024 Oracle and/or its affiliates. | ||
| * | ||
| * 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 io.helidon.docs.se.grpc; | ||
|
|
||
| import java.util.List; | ||
| import java.util.ArrayList; | ||
| import java.util.Iterator; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import io.helidon.common.configurable.Resource; | ||
| import io.helidon.common.tls.Tls; | ||
| import io.helidon.config.Config; | ||
| import io.helidon.webclient.api.WebClient; | ||
| import io.helidon.webclient.api.ClientUri; | ||
| import io.helidon.webclient.grpc.GrpcClient; | ||
| import io.helidon.webserver.WebServer; | ||
| import io.helidon.webserver.grpc.GrpcRouting; | ||
| import io.helidon.webserver.grpc.GrpcService; | ||
| import io.helidon.webclient.grpc.GrpcServiceDescriptor; | ||
| import io.helidon.webclient.grpc.GrpcClientMethodDescriptor; | ||
| import io.helidon.webclient.grpc.ClientUriSupplier; | ||
| import io.helidon.webclient.grpc.ClientUriSuppliers.RoundRobinSupplier; | ||
|
|
||
| import com.google.protobuf.Descriptors; | ||
| import io.grpc.Channel; | ||
| import io.grpc.stub.StreamObserver; | ||
| import io.grpc.ClientInterceptor; | ||
|
|
||
| import static io.helidon.grpc.core.ResponseHelper.complete; | ||
|
|
||
| @SuppressWarnings("ALL") | ||
| class ClientSnippets { | ||
|
|
||
| class StringServiceGrpc { | ||
|
|
||
| class StringServiceBlockingStub { | ||
| Strings.StringMessage upper(Strings.StringMessage msg) { | ||
| return null; | ||
| } | ||
| Iterator<Strings.StringMessage> split(Strings.StringMessage msg) { | ||
| return null; | ||
| } | ||
| void split(Strings.StringMessage msg, StreamObserver<?> observer) { | ||
| } | ||
| } | ||
|
|
||
| static StringServiceGrpc.StringServiceBlockingStub newBlockingStub(Channel c) { | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| class Strings { | ||
|
|
||
| class StringMessage { | ||
| String getText() { | ||
| return null; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| Strings.StringMessage newMessage(String s) { | ||
| return null; | ||
| } | ||
|
|
||
| ClientUri[] myServers() { | ||
| return null; | ||
| } | ||
|
|
||
| List<ClientInterceptor> myInterceptors() { | ||
| return null; | ||
| } | ||
|
|
||
| void snippets() { | ||
| // tag::snippet_1[] | ||
| Tls clientTls = Tls.builder() | ||
| .trust(trust -> trust | ||
| .keystore(store -> store | ||
| .passphrase("password") | ||
| .trustStore(true) | ||
| .keystore(Resource.create("client.p12")))) | ||
| .build(); | ||
| // end::snippet_1[] | ||
|
|
||
| // tag::snippet_2[] | ||
| WebClient webClient = WebClient.builder() | ||
| .tls(clientTls) | ||
| .baseUri("https://localhost:8080") | ||
| .build(); | ||
| // end::snippet_2[] | ||
|
|
||
| // tag::snippet_3[] | ||
| GrpcClient grpcClient = webClient.client(GrpcClient.PROTOCOL); | ||
| StringServiceGrpc.StringServiceBlockingStub service = | ||
| StringServiceGrpc.newBlockingStub(grpcClient.channel()); | ||
| // end::snippet_3[] | ||
|
|
||
| // tag::snippet_4[] | ||
| Strings.StringMessage msg1 = newMessage("hello"); | ||
| Strings.StringMessage res1 = service.upper(msg1); | ||
| String uppercased = res1.getText(); | ||
| // end::snippet_4[] | ||
|
|
||
| // tag::snippet_5[] | ||
| Strings.StringMessage msg2 = newMessage("hello world"); | ||
| Iterator<Strings.StringMessage> res2 = service.split(msg2); | ||
| while (res2.hasNext()) { | ||
| // ... | ||
| } | ||
| // end::snippet_5[] | ||
|
|
||
| // tag::snippet_6[] | ||
| Strings.StringMessage msg3 = newMessage("hello world"); | ||
| CompletableFuture<Iterator<Strings.StringMessage>> future = new CompletableFuture<>(); | ||
| service.split(msg3, new StreamObserver<Strings.StringMessage>() { | ||
| private final List<Strings.StringMessage> value = new ArrayList<>(); | ||
|
|
||
| @Override | ||
| public void onNext(Strings.StringMessage value) { | ||
| this.value.add(value); | ||
| } | ||
|
|
||
| @Override | ||
| public void onError(Throwable t) { | ||
| future.completeExceptionally(t); | ||
| } | ||
|
|
||
| @Override | ||
| public void onCompleted() { | ||
| future.complete(value.iterator()); | ||
| } | ||
| }); | ||
| // end::snippet_6[] | ||
|
|
||
| // tag::snippet_7[] | ||
| GrpcServiceDescriptor serviceDescriptor = GrpcServiceDescriptor.builder() | ||
| .serviceName("StringService") | ||
| .putMethod("Upper", | ||
| GrpcClientMethodDescriptor.unary("StringService", "Upper") | ||
| .requestType(Strings.StringMessage.class) | ||
| .responseType(Strings.StringMessage.class) | ||
| .build()) | ||
| .putMethod("Split", | ||
| GrpcClientMethodDescriptor.serverStreaming("StringService", "Split") | ||
| .requestType(Strings.StringMessage.class) | ||
| .responseType(Strings.StringMessage.class) | ||
| .build()) | ||
| .build(); | ||
| // end::snippet_7[] | ||
|
|
||
| // tag::snippet_8[] | ||
| Strings.StringMessage res = grpcClient.serviceClient(serviceDescriptor) | ||
| .unary("Upper", newMessage("hello")); | ||
| // end::snippet_8[] | ||
|
|
||
| } | ||
|
|
||
| void snippets2() { | ||
| Tls clientTls = Tls.builder() | ||
| .trust(trust -> trust | ||
| .keystore(store -> store | ||
| .passphrase("password") | ||
| .trustStore(true) | ||
| .keystore(Resource.create("client.p12")))) | ||
| .build(); | ||
|
|
||
| // tag::snippet_9[] | ||
| GrpcClient grpcClient = GrpcClient.builder() | ||
| .tls(clientTls) | ||
| .clientUriSupplier(RoundRobinSupplier.create(myServers())) | ||
| .build(); | ||
| // end::snippet_9[] | ||
|
|
||
| // tag::snippet_10[] | ||
| Channel newChannel = grpcClient.channel(myInterceptors()); | ||
| // end::snippet_10[] | ||
| } | ||
| } |