> update(Long id, PostData postData);
16 | }
17 |
18 |
--------------------------------------------------------------------------------
/scripts/script-helper:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env bash
2 |
3 | set -e
4 | set -o pipefail
5 |
6 | java_version=$(java -version 2>&1 | java -version 2>&1 | awk -F '"' '/version/ {print $2}')
7 |
8 | if [[ $java_version = 1.8* ]] ; then
9 | echo "The build is using Java 8 ($java_version). No addional JVM params needed."
10 | else
11 | echo "The build is using Java 9+ ($java_version). We need additional JVM parameters"
12 | export _JAVA_OPTIONS="$_JAVA_OPTIONS --add-modules=java.xml.bind"
13 | fi
14 |
--------------------------------------------------------------------------------
/app/v1/post/PostExecutionContext.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | import akka.actor.ActorSystem;
4 | import play.libs.concurrent.CustomExecutionContext;
5 |
6 | import javax.inject.Inject;
7 |
8 | /**
9 | * Custom execution context wired to "post.repository" thread pool
10 | */
11 | public class PostExecutionContext extends CustomExecutionContext {
12 |
13 | @Inject
14 | public PostExecutionContext(ActorSystem actorSystem) {
15 | super(actorSystem, "post.repository");
16 | }
17 | }
18 |
--------------------------------------------------------------------------------
/app/v1/post/PostData.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | import javax.persistence.*;
4 |
5 | /**
6 | * Data returned from the database
7 | */
8 | @Entity
9 | @Table(name = "posts")
10 | public class PostData {
11 |
12 | public PostData() {
13 | }
14 |
15 | public PostData(String title, String body) {
16 | this.title = title;
17 | this.body = body;
18 | }
19 |
20 | @Id
21 | @GeneratedValue(strategy= GenerationType.AUTO)
22 | public Long id;
23 | public String title;
24 | public String body;
25 | }
26 |
--------------------------------------------------------------------------------
/scripts/test-gradle:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env bash
2 |
3 | . "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/script-helper"
4 |
5 | # Using cut because TRAVIS_SCALA_VERSION is the full Scala
6 | # version (for example 2.12.4), but Gradle expects just the
7 | # binary version (for example 2.12)
8 | scala_binary_version=$(echo $TRAVIS_SCALA_VERSION | cut -c1-4)
9 |
10 | echo "+------------------------------+"
11 | echo "| Executing tests using Gradle |"
12 | echo "+------------------------------+"
13 | ./gradlew -Dscala.binary.version=$scala_binary_version check -i --stacktrace
14 |
--------------------------------------------------------------------------------
/conf/META-INF/persistence.xml:
--------------------------------------------------------------------------------
1 |
5 |
6 |
7 | org.hibernate.jpa.HibernatePersistenceProvider
8 | DefaultDS
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
--------------------------------------------------------------------------------
/app/views/index.scala.html:
--------------------------------------------------------------------------------
1 | @()
2 |
3 |
4 |
5 |
6 |
7 | Play REST API
8 |
9 |
10 |
11 | Play REST API
12 |
13 |
14 | This is a placeholder page to show you the REST API. Use httpie to post JSON to the application.
15 |
16 |
17 |
18 | To see all posts, you can do a GET:
19 |
20 |
21 |
22 |
23 | http GET localhost:9000/v1/posts/
24 |
25 |
26 |
27 | To create new posts, do a post
28 |
29 |
30 |
31 | http POST localhost:9000/v1/posts/ title="Some title" body="Some Body"
32 |
33 |
34 |
35 | You can always look at the API directly: /v1/posts
36 |
37 |
38 |
39 |
40 |
--------------------------------------------------------------------------------
/.mergify.yml:
--------------------------------------------------------------------------------
1 | pull_request_rules:
2 | - name: Merge PRs that are ready
3 | conditions:
4 | - status-success=Travis CI - Pull Request
5 | - status-success=typesafe-cla-validator
6 | - "#approved-reviews-by>=1"
7 | - "#review-requested=0"
8 | - "#changes-requested-reviews-by=0"
9 | - label!=status:block-merge
10 | actions:
11 | merge:
12 | method: squash
13 | strict: smart
14 |
15 | - name: Merge TemplateControl's PRs that are ready
16 | conditions:
17 | - status-success=Travis CI - Pull Request
18 | - "#review-requested=0"
19 | - "#changes-requested-reviews-by=0"
20 | - label!=status:block-merge
21 | - label=status:merge-when-green
22 | - label!=status:block-merge
23 | actions:
24 | merge:
25 | method: squash
26 | strict: smart
27 |
28 | - name: Delete the PR branch after merge
29 | conditions:
30 | - merged
31 | actions:
32 | delete_head_branch: {}
33 |
--------------------------------------------------------------------------------
/conf/application.conf:
--------------------------------------------------------------------------------
1 | # This is the main configuration file for the application.
2 | # https://www.playframework.com/documentation/latest/ConfigFile
3 | play.http.secret.key=this-is-a-very-long-key-12764978qteriugwfiabcou
4 |
5 | # Point JPA at our database configuration
6 | jpa.default=defaultPersistenceUnit
7 |
8 | # Number of database connections
9 | # See https://github.com/brettwooldridge/HikariCP/wiki/About-Pool-Sizing
10 | fixedConnectionPool = 9
11 |
12 | db.default {
13 | driver = org.h2.Driver
14 | url = "jdbc:h2:mem:play"
15 |
16 | # Provided for JPA access
17 | jndiName=DefaultDS
18 |
19 | # Set Hikari to fixed size
20 | hikaricp.minimumIdle = ${fixedConnectionPool}
21 | hikaricp.maximumPoolSize = ${fixedConnectionPool}
22 | }
23 |
24 | # disable the built in filters
25 | play.http.filters = play.api.http.NoHttpFilters
26 |
27 | # Job queue sized to HikariCP connection pool
28 | post.repository {
29 | executor = "thread-pool-executor"
30 | throughput = 1
31 | thread-pool-executor {
32 | fixed-pool-size = ${fixedConnectionPool}
33 | }
34 | }
35 |
--------------------------------------------------------------------------------
/app/v1/post/PostResource.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | /**
4 | * Resource for the API. This is a presentation class for frontend work.
5 | */
6 | public class PostResource {
7 | private String id;
8 | private String link;
9 | private String title;
10 | private String body;
11 |
12 | public PostResource() {
13 | }
14 |
15 | public PostResource(String id, String link, String title, String body) {
16 | this.id = id;
17 | this.link = link;
18 | this.title = title;
19 | this.body = body;
20 | }
21 |
22 | public PostResource(PostData data, String link) {
23 | this.id = data.id.toString();
24 | this.link = link;
25 | this.title = data.title;
26 | this.body = data.body;
27 | }
28 |
29 | public String getId() {
30 | return id;
31 | }
32 |
33 | public String getLink() {
34 | return link;
35 | }
36 |
37 | public String getTitle() {
38 | return title;
39 | }
40 |
41 | public String getBody() {
42 | return body;
43 | }
44 |
45 | }
46 |
--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
1 | language: scala
2 | scala: 2.12.8
3 | script: $SCRIPT
4 |
5 | env:
6 | matrix:
7 | - SCRIPT=scripts/test-sbt TRAVIS_JDK=adopt@1.8.202-08
8 | - SCRIPT=scripts/test-sbt TRAVIS_JDK=adopt@1.11.0-2
9 | - SCRIPT=scripts/test-gradle TRAVIS_JDK=adopt@1.8.202-08
10 | - SCRIPT=scripts/test-gradle TRAVIS_JDK=adopt@1.11.0-2
11 |
12 | matrix:
13 | fast_finish: true
14 | allow_failures:
15 | - env: SCRIPT=scripts/test-gradle TRAVIS_JDK=adopt@1.8.202-08 # current gradle doesn't support play 2.7
16 | - env: SCRIPT=scripts/test-gradle TRAVIS_JDK=adopt@1.11.0-2 # current gradle doesn't support play 2.7
17 | - env: SCRIPT=scripts/test-sbt TRAVIS_JDK=adopt@1.11.0-2 # not fully supported but allows problem discovery
18 |
19 | before_install: curl -Ls https://git.io/jabba | bash && . ~/.jabba/jabba.sh
20 | install: jabba install "$TRAVIS_JDK" && jabba use "$_" && java -Xmx32m -version
21 |
22 | cache:
23 | directories:
24 | - "$HOME/.gradle/caches"
25 | - "$HOME/.ivy2/cache"
26 | - "$HOME/.jabba/jdk"
27 | - "$HOME/.sbt"
28 |
29 | before_cache:
30 | - find $HOME/.ivy2 -name "ivydata-*.properties" -delete
31 | - find $HOME/.sbt -name "*.lock" -delete
32 |
--------------------------------------------------------------------------------
/conf/logback.xml:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
7 | ${application.home:-.}/logs/application.log
8 |
9 | %date [%level] from %logger in %thread - %message%n%xException
10 |
11 |
12 |
13 |
14 |
15 | %coloredLevel %logger{15} - %message%n%xException{10}
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
--------------------------------------------------------------------------------
/gatling/simulation/GatlingSpec.scala:
--------------------------------------------------------------------------------
1 | package simulation
2 |
3 | import io.gatling.core.Predef._
4 | import io.gatling.http.Predef._
5 | import scala.concurrent.duration._
6 | import scala.language.postfixOps
7 |
8 | // run with "sbt gatling:test" on another machine so you don't have resources contending.
9 | // http://gatling.io/docs/2.2.2/general/simulation_structure.html#simulation-structure
10 | class GatlingSpec extends Simulation {
11 |
12 | // change this to another machine, make sure you have Play running in producion mode
13 | // i.e. sbt stage / sbt dist and running the script
14 | val httpConf = http.baseURL("http://localhost:9000")
15 |
16 | val readClients = scenario("Clients").exec(Index.refreshManyTimes)
17 |
18 | setUp(
19 | // For reference, this hits 25% CPU on a 5820K with 32 GB, running both server and load test.
20 | // In general, you want to ramp up load slowly, and measure with a JVM that has been "warmed up":
21 | // https://groups.google.com/forum/#!topic/gatling/mD15aj-fyo4
22 | readClients.inject(rampUsers(2000) over (100 seconds)).protocols(httpConf)
23 | )
24 | }
25 |
26 | object Index {
27 |
28 | def post = {
29 | val body = StringBody("""{ "title": "hello", "body": "world" }""")
30 | exec(http("Index").post("/v1/posts/").body(body).asJSON.check(status.is(200))).pause(1)
31 | }
32 |
33 | def refreshAfterOneSecond =
34 | exec(http("Index").get("/").check(status.is(200))).pause(1)
35 |
36 | val refreshManyTimes = repeat(500) {
37 | refreshAfterOneSecond
38 | }
39 | }
40 |
--------------------------------------------------------------------------------
/app/v1/post/PostController.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | import com.fasterxml.jackson.databind.JsonNode;
4 | import play.libs.Json;
5 | import play.libs.concurrent.HttpExecutionContext;
6 | import play.mvc.*;
7 |
8 | import javax.inject.Inject;
9 | import java.util.List;
10 | import java.util.concurrent.CompletionStage;
11 | import java.util.stream.Collectors;
12 |
13 | @With(PostAction.class)
14 | public class PostController extends Controller {
15 |
16 | private HttpExecutionContext ec;
17 | private PostResourceHandler handler;
18 |
19 | @Inject
20 | public PostController(HttpExecutionContext ec, PostResourceHandler handler) {
21 | this.ec = ec;
22 | this.handler = handler;
23 | }
24 |
25 | public CompletionStage list(Http.Request request) {
26 | return handler.find(request).thenApplyAsync(posts -> {
27 | final List postList = posts.collect(Collectors.toList());
28 | return ok(Json.toJson(postList));
29 | }, ec.current());
30 | }
31 |
32 | public CompletionStage show(Http.Request request, String id) {
33 | return handler.lookup(request, id).thenApplyAsync(optionalResource -> {
34 | return optionalResource.map(resource ->
35 | ok(Json.toJson(resource))
36 | ).orElseGet(Results::notFound);
37 | }, ec.current());
38 | }
39 |
40 | public CompletionStage update(Http.Request request, String id) {
41 | JsonNode json = request.body().asJson();
42 | PostResource resource = Json.fromJson(json, PostResource.class);
43 | return handler.update(request, id, resource).thenApplyAsync(optionalResource -> {
44 | return optionalResource.map(r ->
45 | ok(Json.toJson(r))
46 | ).orElseGet(Results::notFound
47 | );
48 | }, ec.current());
49 | }
50 |
51 | public CompletionStage create(Http.Request request) {
52 | JsonNode json = request.body().asJson();
53 | final PostResource resource = Json.fromJson(json, PostResource.class);
54 | return handler.create(request, resource).thenApplyAsync(savedResource -> {
55 | return created(Json.toJson(savedResource));
56 | }, ec.current());
57 | }
58 | }
59 |
--------------------------------------------------------------------------------
/app/Module.java:
--------------------------------------------------------------------------------
1 | import com.codahale.metrics.ConsoleReporter;
2 | import com.codahale.metrics.MetricRegistry;
3 | import com.codahale.metrics.Slf4jReporter;
4 | import com.google.inject.AbstractModule;
5 | import org.slf4j.Logger;
6 | import org.slf4j.LoggerFactory;
7 | import v1.post.PostRepository;
8 | import v1.post.JPAPostRepository;
9 |
10 | import javax.inject.Provider;
11 | import java.util.concurrent.TimeUnit;
12 |
13 | /**
14 | * This class is a Guice module that tells Guice how to bind several
15 | * different types. This Guice module is created when the Play
16 | * application starts.
17 | *
18 | * Play will automatically use any class called `Module` that is in
19 | * the root package. You can create modules in other locations by
20 | * adding `play.modules.enabled` settings to the `application.conf`
21 | * configuration file.
22 | */
23 | public class Module extends AbstractModule {
24 |
25 | @Override
26 | public void configure() {
27 | bind(MetricRegistry.class).toProvider(MetricRegistryProvider.class).asEagerSingleton();
28 | bind(PostRepository.class).to(JPAPostRepository.class).asEagerSingleton();
29 | }
30 | }
31 |
32 | class MetricRegistryProvider implements Provider {
33 | private static final Logger logger = LoggerFactory.getLogger("application.Metrics");
34 |
35 | private static final MetricRegistry registry = new MetricRegistry();
36 |
37 | private void consoleReporter() {
38 | ConsoleReporter reporter = ConsoleReporter.forRegistry(registry)
39 | .convertRatesTo(TimeUnit.SECONDS)
40 | .convertDurationsTo(TimeUnit.MILLISECONDS)
41 | .build();
42 | reporter.start(1, TimeUnit.SECONDS);
43 | }
44 |
45 | private void slf4jReporter() {
46 | final Slf4jReporter reporter = Slf4jReporter.forRegistry(registry)
47 | .outputTo(logger)
48 | .convertRatesTo(TimeUnit.SECONDS)
49 | .convertDurationsTo(TimeUnit.MILLISECONDS)
50 | .build();
51 | reporter.start(1, TimeUnit.MINUTES);
52 | }
53 |
54 | public MetricRegistryProvider() {
55 | //consoleReporter();
56 | // slf4jReporter();
57 | }
58 |
59 | @Override
60 | public MetricRegistry get() {
61 | return registry;
62 | }
63 | }
64 |
--------------------------------------------------------------------------------
/test/it/IntegrationTest.java:
--------------------------------------------------------------------------------
1 | package it;
2 |
3 | import com.fasterxml.jackson.databind.JsonNode;
4 | import org.junit.Test;
5 | import play.Application;
6 | import play.inject.guice.GuiceApplicationBuilder;
7 | import play.libs.Json;
8 | import play.mvc.Http;
9 | import play.mvc.Result;
10 | import play.test.WithApplication;
11 | import v1.post.PostData;
12 | import v1.post.PostRepository;
13 | import v1.post.PostResource;
14 |
15 | import static org.hamcrest.CoreMatchers.containsString;
16 | import static org.hamcrest.CoreMatchers.equalTo;
17 | import static org.junit.Assert.assertThat;
18 | import static play.test.Helpers.*;
19 |
20 | public class IntegrationTest extends WithApplication {
21 |
22 | @Override
23 | protected Application provideApplication() {
24 | return new GuiceApplicationBuilder().build();
25 | }
26 |
27 | @Test
28 | public void testList() {
29 | PostRepository repository = app.injector().instanceOf(PostRepository.class);
30 | repository.create(new PostData("title", "body"));
31 |
32 | Http.RequestBuilder request = new Http.RequestBuilder()
33 | .method(GET)
34 | .uri("/v1/posts");
35 |
36 | Result result = route(app, request);
37 | final String body = contentAsString(result);
38 | assertThat(body, containsString("body"));
39 | }
40 |
41 | @Test
42 | public void testTimeoutOnUpdate() {
43 | PostRepository repository = app.injector().instanceOf(PostRepository.class);
44 | repository.create(new PostData("title", "body"));
45 |
46 | JsonNode json = Json.toJson(new PostResource("1", "http://localhost:9000/v1/posts/1", "some title", "somebody"));
47 |
48 | Http.RequestBuilder request = new Http.RequestBuilder()
49 | .method(PUT)
50 | .bodyJson(json)
51 | .uri("/v1/posts/1");
52 |
53 | Result result = route(app, request);
54 | assertThat(result.status(), equalTo(GATEWAY_TIMEOUT));
55 | }
56 |
57 | @Test
58 | public void testCircuitBreakerOnShow() {
59 | PostRepository repository = app.injector().instanceOf(PostRepository.class);
60 | repository.create(new PostData("title", "body"));
61 |
62 | Http.RequestBuilder request = new Http.RequestBuilder()
63 | .method(GET)
64 | .uri("/v1/posts/1");
65 |
66 | Result result = route(app, request);
67 | assertThat(result.status(), equalTo(SERVICE_UNAVAILABLE));
68 | }
69 |
70 |
71 | }
72 |
--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
1 | @if "%DEBUG%" == "" @echo off
2 | @rem ##########################################################################
3 | @rem
4 | @rem Gradle startup script for Windows
5 | @rem
6 | @rem ##########################################################################
7 |
8 | @rem Set local scope for the variables with windows NT shell
9 | if "%OS%"=="Windows_NT" setlocal
10 |
11 | set DIRNAME=%~dp0
12 | if "%DIRNAME%" == "" set DIRNAME=.
13 | set APP_BASE_NAME=%~n0
14 | set APP_HOME=%DIRNAME%
15 |
16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
17 | set DEFAULT_JVM_OPTS=
18 |
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 |
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 |
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 |
32 | goto fail
33 |
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 |
38 | if exist "%JAVA_EXE%" goto init
39 |
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 |
46 | goto fail
47 |
48 | :init
49 | @rem Get command-line arguments, handling Windows variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 |
53 | :win9xME_args
54 | @rem Slurp the command line arguments.
55 | set CMD_LINE_ARGS=
56 | set _SKIP=2
57 |
58 | :win9xME_args_slurp
59 | if "x%~1" == "x" goto execute
60 |
61 | set CMD_LINE_ARGS=%*
62 |
63 | :execute
64 | @rem Setup the command line
65 |
66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
67 |
68 | @rem Execute Gradle
69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
70 |
71 | :end
72 | @rem End local scope for the variables with windows NT shell
73 | if "%ERRORLEVEL%"=="0" goto mainEnd
74 |
75 | :fail
76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
77 | rem the _cmd.exe /c_ return code!
78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
79 | exit /b 1
80 |
81 | :mainEnd
82 | if "%OS%"=="Windows_NT" endlocal
83 |
84 | :omega
85 |
--------------------------------------------------------------------------------
/app/v1/post/PostResourceHandler.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | import com.palominolabs.http.url.UrlBuilder;
4 | import play.libs.concurrent.HttpExecutionContext;
5 | import play.mvc.Http;
6 |
7 | import javax.inject.Inject;
8 | import java.nio.charset.CharacterCodingException;
9 | import java.util.Optional;
10 | import java.util.concurrent.CompletionStage;
11 | import java.util.stream.Stream;
12 |
13 | /**
14 | * Handles presentation of Post resources, which map to JSON.
15 | */
16 | public class PostResourceHandler {
17 |
18 | private final PostRepository repository;
19 | private final HttpExecutionContext ec;
20 |
21 | @Inject
22 | public PostResourceHandler(PostRepository repository, HttpExecutionContext ec) {
23 | this.repository = repository;
24 | this.ec = ec;
25 | }
26 |
27 | public CompletionStage> find(Http.Request request) {
28 | return repository.list().thenApplyAsync(postDataStream -> {
29 | return postDataStream.map(data -> new PostResource(data, link(request, data)));
30 | }, ec.current());
31 | }
32 |
33 | public CompletionStage create(Http.Request request, PostResource resource) {
34 | final PostData data = new PostData(resource.getTitle(), resource.getBody());
35 | return repository.create(data).thenApplyAsync(savedData -> {
36 | return new PostResource(savedData, link(request, savedData));
37 | }, ec.current());
38 | }
39 |
40 | public CompletionStage> lookup(Http.Request request,String id) {
41 | return repository.get(Long.parseLong(id)).thenApplyAsync(optionalData -> {
42 | return optionalData.map(data -> new PostResource(data, link(request, data)));
43 | }, ec.current());
44 | }
45 |
46 | public CompletionStage> update(Http.Request request,String id, PostResource resource) {
47 | final PostData data = new PostData(resource.getTitle(), resource.getBody());
48 | return repository.update(Long.parseLong(id), data).thenApplyAsync(optionalData -> {
49 | return optionalData.map(op -> new PostResource(op, link(request, op)));
50 | }, ec.current());
51 | }
52 |
53 | private String link(Http.Request request, PostData data) {
54 | final String[] hostPort = request.host().split(":");
55 | String host = hostPort[0];
56 | int port = (hostPort.length == 2) ? Integer.parseInt(hostPort[1]) : -1;
57 | final String scheme = request.secure() ? "https" : "http";
58 | try {
59 | return UrlBuilder.forHost(scheme, host, port)
60 | .pathSegments("v1", "posts", data.id.toString())
61 | .toUrlString();
62 | } catch (CharacterCodingException e) {
63 | throw new IllegalStateException(e);
64 | }
65 | }
66 | }
67 |
--------------------------------------------------------------------------------
/app/v1/post/JPAPostRepository.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | import net.jodah.failsafe.CircuitBreaker;
4 | import net.jodah.failsafe.Failsafe;
5 | import play.db.jpa.JPAApi;
6 |
7 | import javax.inject.Inject;
8 | import javax.inject.Singleton;
9 | import javax.persistence.EntityManager;
10 | import javax.persistence.TypedQuery;
11 | import java.sql.SQLException;
12 | import java.util.Optional;
13 | import java.util.concurrent.CompletionStage;
14 | import java.util.function.Function;
15 | import java.util.stream.Stream;
16 |
17 | import static java.util.concurrent.CompletableFuture.supplyAsync;
18 |
19 | /**
20 | * A repository that provides a non-blocking API with a custom execution context
21 | * and circuit breaker.
22 | */
23 | @Singleton
24 | public class JPAPostRepository implements PostRepository {
25 |
26 | private final JPAApi jpaApi;
27 | private final PostExecutionContext ec;
28 | private final CircuitBreaker circuitBreaker = new CircuitBreaker().withFailureThreshold(1).withSuccessThreshold(3);
29 |
30 | @Inject
31 | public JPAPostRepository(JPAApi api, PostExecutionContext ec) {
32 | this.jpaApi = api;
33 | this.ec = ec;
34 | }
35 |
36 | @Override
37 | public CompletionStage> list() {
38 | return supplyAsync(() -> wrap(em -> select(em)), ec);
39 | }
40 |
41 | @Override
42 | public CompletionStage create(PostData postData) {
43 | return supplyAsync(() -> wrap(em -> insert(em, postData)), ec);
44 | }
45 |
46 | @Override
47 | public CompletionStage> get(Long id) {
48 | return supplyAsync(() -> wrap(em -> Failsafe.with(circuitBreaker).get(() -> lookup(em, id))), ec);
49 | }
50 |
51 | @Override
52 | public CompletionStage> update(Long id, PostData postData) {
53 | return supplyAsync(() -> wrap(em -> Failsafe.with(circuitBreaker).get(() -> modify(em, id, postData))), ec);
54 | }
55 |
56 | private T wrap(Function function) {
57 | return jpaApi.withTransaction(function);
58 | }
59 |
60 | private Optional lookup(EntityManager em, Long id) throws SQLException {
61 | throw new SQLException("Call this to cause the circuit breaker to trip");
62 | //return Optional.ofNullable(em.find(PostData.class, id));
63 | }
64 |
65 | private Stream select(EntityManager em) {
66 | TypedQuery query = em.createQuery("SELECT p FROM PostData p", PostData.class);
67 | return query.getResultList().stream();
68 | }
69 |
70 | private Optional modify(EntityManager em, Long id, PostData postData) throws InterruptedException {
71 | final PostData data = em.find(PostData.class, id);
72 | if (data != null) {
73 | data.title = postData.title;
74 | data.body = postData.body;
75 | }
76 | Thread.sleep(10000L);
77 | return Optional.ofNullable(data);
78 | }
79 |
80 | private PostData insert(EntityManager em, PostData postData) {
81 | return em.merge(postData);
82 | }
83 | }
84 |
--------------------------------------------------------------------------------
/.github/settings.yml:
--------------------------------------------------------------------------------
1 | # These settings are synced to GitHub by https://probot.github.io/apps/settings/
2 | repository:
3 | homepage: "https://developer.lightbend.com/start/?group=play"
4 | topics: playframework, example, example-project, sample, sample-app, jvm, webapp
5 | private: false
6 | has_issues: true
7 | # We don't need projects in sample projects
8 | has_projects: false
9 | # We don't need wiki in sample projects
10 | has_wiki: false
11 | has_downloads: true
12 | default_branch: 2.7.x
13 | allow_squash_merge: true
14 | allow_merge_commit: false
15 | allow_rebase_merge: false
16 |
17 | teams:
18 | - name: core
19 | permission: admin
20 | - name: integrators
21 | permission: write
22 | - name: write-bots
23 | permission: write
24 |
25 | branches:
26 | - name: "[0-9].*.x"
27 | protection:
28 | # We don't require reviews for sample applications because they are mainly
29 | # updated by template-control, which is an automated process
30 | required_pull_request_reviews: null
31 | # Required. Require status checks to pass before merging. Set to null to disable
32 | required_status_checks:
33 | # Required. The list of status checks to require in order to merge into this branch
34 | contexts: ["Travis CI - Pull Request", "typesafe-cla-validator"]
35 |
36 | # Labels: tailored list of labels to be used by sample applications
37 | labels:
38 | - color: f9d0c4
39 | name: "closed:declined"
40 | - color: f9d0c4
41 | name: "closed:duplicated"
42 | oldname: duplicate
43 | - color: f9d0c4
44 | name: "closed:invalid"
45 | oldname: invalid
46 | - color: f9d0c4
47 | name: "closed:question"
48 | oldname: question
49 | - color: f9d0c4
50 | name: "closed:wontfix"
51 | oldname: wontfix
52 | - color: 7057ff
53 | name: "good first issue"
54 | - color: 7057ff
55 | name: "Hacktoberfest"
56 | - color: 7057ff
57 | name: "help wanted"
58 | - color: cceecc
59 | name: "status:backlog"
60 | oldname: backlog
61 | - color: b60205
62 | name: "status:block-merge"
63 | oldname: block-merge
64 | - color: b60205
65 | name: "status:blocked"
66 | - color: 0e8a16
67 | name: "status:in-progress"
68 | - color: 0e8a16
69 | name: "status:merge-when-green"
70 | oldname: merge-when-green
71 | - color: fbca04
72 | name: "status:needs-backport"
73 | - color: fbca04
74 | name: "status:needs-forwardport"
75 | - color: fbca04
76 | name: "status:needs-info"
77 | - color: fbca04
78 | name: "status:needs-verification"
79 | - color: 0e8a16
80 | name: "status:ready"
81 | - color: fbca04
82 | name: "status:to-review"
83 | oldname: review
84 | - color: c5def5
85 | name: "topic:build/tests"
86 | - color: c5def5
87 | name: "topic:dev-environment"
88 | - color: c5def5
89 | name: "topic:documentation"
90 | - color: c5def5
91 | name: "topic:jdk-next"
92 | - color: b60205
93 | name: "type:defect"
94 | oldname: bug
95 | - color: 0052cc
96 | name: "type:feature"
97 | - color: 0052cc
98 | name: "type:improvement"
99 | oldname: enhancement
100 | - color: 0052cc
101 | name: "type:updates"
102 | - color: bf0d92
103 | name: "type:template-control"
104 | oldname: template-control
105 |
--------------------------------------------------------------------------------
/app/v1/post/PostAction.java:
--------------------------------------------------------------------------------
1 | package v1.post;
2 |
3 | import com.codahale.metrics.Meter;
4 | import com.codahale.metrics.MetricRegistry;
5 | import com.codahale.metrics.Timer;
6 | import net.jodah.failsafe.FailsafeException;
7 | import org.slf4j.Logger;
8 | import org.slf4j.LoggerFactory;
9 | import play.libs.concurrent.Futures;
10 | import play.libs.concurrent.HttpExecutionContext;
11 | import play.mvc.Http;
12 | import play.mvc.Result;
13 | import play.mvc.Results;
14 |
15 | import javax.inject.Inject;
16 | import javax.inject.Singleton;
17 | import java.util.concurrent.CompletionException;
18 | import java.util.concurrent.CompletionStage;
19 | import java.util.concurrent.TimeUnit;
20 |
21 | import static com.codahale.metrics.MetricRegistry.name;
22 | import static java.util.concurrent.CompletableFuture.completedFuture;
23 | import static play.mvc.Http.Status.*;
24 |
25 | public class PostAction extends play.mvc.Action.Simple {
26 | private final Logger logger = LoggerFactory.getLogger("application.PostAction");
27 |
28 | private final Meter requestsMeter;
29 | private final Timer responsesTimer;
30 | private final HttpExecutionContext ec;
31 | private final Futures futures;
32 |
33 | @Singleton
34 | @Inject
35 | public PostAction(MetricRegistry metrics, HttpExecutionContext ec, Futures futures) {
36 | this.ec = ec;
37 | this.futures = futures;
38 | this.requestsMeter = metrics.meter("requestsMeter");
39 | this.responsesTimer = metrics.timer(name(PostAction.class, "responsesTimer"));
40 | }
41 |
42 | public CompletionStage call(Http.Request request) {
43 | if (logger.isTraceEnabled()) {
44 | logger.trace("call: request = " + request);
45 | }
46 |
47 | requestsMeter.mark();
48 | if (request.accepts("application/json")) {
49 | final Timer.Context time = responsesTimer.time();
50 | return futures.timeout(doCall(request), 1L, TimeUnit.SECONDS).exceptionally(e -> {
51 | return (Results.status(GATEWAY_TIMEOUT, views.html.timeout.render()));
52 | }).whenComplete((r, e) -> time.close());
53 | } else {
54 | return completedFuture(
55 | status(NOT_ACCEPTABLE, "We only accept application/json")
56 | );
57 | }
58 | }
59 |
60 | private CompletionStage doCall(Http.Request request) {
61 | return delegate.call(request).handleAsync((result, e) -> {
62 | if (e != null) {
63 | if (e instanceof CompletionException) {
64 | Throwable completionException = e.getCause();
65 | if (completionException instanceof FailsafeException) {
66 | logger.error("Circuit breaker is open!", completionException);
67 | return Results.status(SERVICE_UNAVAILABLE, "Service has timed out");
68 | } else {
69 | logger.error("Direct exception " + e.getMessage(), e);
70 | return internalServerError();
71 | }
72 | } else {
73 | logger.error("Unknown exception " + e.getMessage(), e);
74 | return internalServerError();
75 | }
76 | } else {
77 | return result;
78 | }
79 | }, ec.current());
80 | }
81 | }
82 |
--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env sh
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Attempt to set APP_HOME
10 | # Resolve links: $0 may be a link
11 | PRG="$0"
12 | # Need this for relative symlinks.
13 | while [ -h "$PRG" ] ; do
14 | ls=`ls -ld "$PRG"`
15 | link=`expr "$ls" : '.*-> \(.*\)$'`
16 | if expr "$link" : '/.*' > /dev/null; then
17 | PRG="$link"
18 | else
19 | PRG=`dirname "$PRG"`"/$link"
20 | fi
21 | done
22 | SAVED="`pwd`"
23 | cd "`dirname \"$PRG\"`/" >/dev/null
24 | APP_HOME="`pwd -P`"
25 | cd "$SAVED" >/dev/null
26 |
27 | APP_NAME="Gradle"
28 | APP_BASE_NAME=`basename "$0"`
29 |
30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
31 | DEFAULT_JVM_OPTS=""
32 |
33 | # Use the maximum available, or set MAX_FD != -1 to use that value.
34 | MAX_FD="maximum"
35 |
36 | warn () {
37 | echo "$*"
38 | }
39 |
40 | die () {
41 | echo
42 | echo "$*"
43 | echo
44 | exit 1
45 | }
46 |
47 | # OS specific support (must be 'true' or 'false').
48 | cygwin=false
49 | msys=false
50 | darwin=false
51 | nonstop=false
52 | case "`uname`" in
53 | CYGWIN* )
54 | cygwin=true
55 | ;;
56 | Darwin* )
57 | darwin=true
58 | ;;
59 | MINGW* )
60 | msys=true
61 | ;;
62 | NONSTOP* )
63 | nonstop=true
64 | ;;
65 | esac
66 |
67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
68 |
69 | # Determine the Java command to use to start the JVM.
70 | if [ -n "$JAVA_HOME" ] ; then
71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
72 | # IBM's JDK on AIX uses strange locations for the executables
73 | JAVACMD="$JAVA_HOME/jre/sh/java"
74 | else
75 | JAVACMD="$JAVA_HOME/bin/java"
76 | fi
77 | if [ ! -x "$JAVACMD" ] ; then
78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
79 |
80 | Please set the JAVA_HOME variable in your environment to match the
81 | location of your Java installation."
82 | fi
83 | else
84 | JAVACMD="java"
85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
86 |
87 | Please set the JAVA_HOME variable in your environment to match the
88 | location of your Java installation."
89 | fi
90 |
91 | # Increase the maximum file descriptors if we can.
92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
93 | MAX_FD_LIMIT=`ulimit -H -n`
94 | if [ $? -eq 0 ] ; then
95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
96 | MAX_FD="$MAX_FD_LIMIT"
97 | fi
98 | ulimit -n $MAX_FD
99 | if [ $? -ne 0 ] ; then
100 | warn "Could not set maximum file descriptor limit: $MAX_FD"
101 | fi
102 | else
103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
104 | fi
105 | fi
106 |
107 | # For Darwin, add options to specify how the application appears in the dock
108 | if $darwin; then
109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
110 | fi
111 |
112 | # For Cygwin, switch paths to Windows format before running java
113 | if $cygwin ; then
114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
116 | JAVACMD=`cygpath --unix "$JAVACMD"`
117 |
118 | # We build the pattern for arguments to be converted via cygpath
119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 | SEP=""
121 | for dir in $ROOTDIRSRAW ; do
122 | ROOTDIRS="$ROOTDIRS$SEP$dir"
123 | SEP="|"
124 | done
125 | OURCYGPATTERN="(^($ROOTDIRS))"
126 | # Add a user-defined pattern to the cygpath arguments
127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 | fi
130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 | i=0
132 | for arg in "$@" ; do
133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
135 |
136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 | else
139 | eval `echo args$i`="\"$arg\""
140 | fi
141 | i=$((i+1))
142 | done
143 | case $i in
144 | (0) set -- ;;
145 | (1) set -- "$args0" ;;
146 | (2) set -- "$args0" "$args1" ;;
147 | (3) set -- "$args0" "$args1" "$args2" ;;
148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 | esac
155 | fi
156 |
157 | # Escape application args
158 | save () {
159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
160 | echo " "
161 | }
162 | APP_ARGS=$(save "$@")
163 |
164 | # Collect all arguments for the java command, following the shell quoting and substitution rules
165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
166 |
167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
169 | cd "$(dirname "$0")"
170 | fi
171 |
172 | exec "$JAVACMD" "$@"
173 |
--------------------------------------------------------------------------------
/LICENSE:
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