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Retrofit rx (#2519) 

* Retrofit with RxJava

* Correct spelling mistake

* Use spaces for indentation instead of tabs in pom.xml

* Use spaces for indentation instead of tabs in pom.xml

* Add Retrofit integration with RxJava to libraries module

* Remove standalone project for Retrofit integration with RxJava

* remove retrofit-rxjava module

* Fixed error in pom.xml caused by an issue while merging

* Retrofit integration with RxJava

* Fix test cases

* Fix merge issues

* BAEL-1016 Merging master
This commit is contained in:
Hany Ahmed 2017-09-04 21:47:19 +02:00 committed by Predrag Maric
parent b49ad4ea59
commit fd37ffb7c2
11 changed files with 887 additions and 505 deletions
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17
libraries/pom.xml
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@ -502,6 +502,22 @@
<artifactId>gt-swing</artifactId>
<version>${geotools.version}</version>
</dependency>
<!-- Retrofit -->
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>retrofit</artifactId>
<version>${retrofit.version}</version>
</dependency>
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>converter-gson</artifactId>
<version>${retrofit.version}</version>
</dependency>
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>adapter-rxjava</artifactId>
<version>${retrofit.version}</version>
</dependency>
<dependency>
<groupId>com.darwinsys</groupId>
<artifactId>hirondelle-date4j</artifactId>
@ -612,6 +628,7 @@
<streamex.version>0.6.5</streamex.version>
<vavr.version>0.9.0</vavr.version>
<geotools.version>15.2</geotools.version>
<retrofit.version>2.3.0</retrofit.version>
<joda-time.version>2.9.9</joda-time.version>
<hirondelle-date4j.version>1.5.1</hirondelle-date4j.version>
<protonpack.version>1.14</protonpack.version>

33
libraries/src/main/java/com/baeldung/retrofit/basic/GitHubBasicApi.java Normal file
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@ -0,0 +1,33 @@
package com.baeldung.retrofit.basic;
import java.util.List;
import com.baeldung.retrofit.models.Contributor;
import com.baeldung.retrofit.models.Repository;
import retrofit2.Call;
import retrofit2.http.GET;
import retrofit2.http.Path;
public interface GitHubBasicApi {
/**
* List GitHub repositories of user
* @param user GitHub Account
* @return GitHub repositories
*/
@GET("users/{user}/repos")
Call<List<Repository>> listRepos(@Path("user") String user);
/**
* List Contributors of a GitHub Repository
* @param user GitHub Account
* @param repo GitHub Repository
* @return GitHub Repository Contributors
*/
@GET("repos/{user}/{repo}/contributors")
Call<List<Contributor>> listRepoContributors(
@Path("user") String user,
@Path("repo") String repo);
}

14
libraries/src/main/java/com/baeldung/retrofit/basic/GitHubBasicApp.java Normal file
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@ -0,0 +1,14 @@
package com.baeldung.retrofit.basic;
import java.io.IOException;
import java.util.List;
public class GitHubBasicApp {
public static void main(String[] args) throws IOException {
String userName = "eugenp";
List<String> topContributors = new GitHubBasicService().getTopContributors(userName);
topContributors.stream().forEach(System.out::println);
}
}

54
libraries/src/main/java/com/baeldung/retrofit/basic/GitHubBasicService.java Normal file
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@ -0,0 +1,54 @@
package com.baeldung.retrofit.basic;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import com.baeldung.retrofit.models.Contributor;
import com.baeldung.retrofit.models.Repository;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
public class GitHubBasicService {
private GitHubBasicApi gitHubApi;
public GitHubBasicService() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.github.com/")
.addConverterFactory(GsonConverterFactory.create())
.build();
gitHubApi = retrofit.create(GitHubBasicApi.class);
}
public List<String> getTopContributors(String userName) throws IOException {
List<Repository> repos = gitHubApi
.listRepos(userName)
.execute()
.body();
List<Contributor> topContributors = new ArrayList<>();
for(Repository repo : repos) {
List<Contributor> contributers = gitHubApi
.listRepoContributors(userName, repo.getName())
.execute()
.body();
List<Contributor> repoTopContributors = contributers.stream()
.filter(c -> c.getContributions() > 100)
.collect(Collectors.toList());
topContributors.addAll(repoTopContributors);
}
Collections.sort(topContributors, (a, b) -> b.getContributions() - a.getContributions());
return topContributors.stream()
.map(c -> c.getName())
.distinct()
.collect(Collectors.toList());
}
}

35
libraries/src/main/java/com/baeldung/retrofit/models/Contributor.java Normal file
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@ -0,0 +1,35 @@
package com.baeldung.retrofit.models;
import com.google.gson.annotations.SerializedName;
/**
* GitHub Contributer
* @author hany
*
*/
public class Contributor {
@SerializedName("login")
private String name;
private Integer contributions;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getContributions() {
return contributions;
}
public void setContributions(Integer contributions) {
this.contributions = contributions;
}
@Override
public String toString() {
return "Contributer [name=" + name + ", contributions=" + contributions + "]";
}
}

32
libraries/src/main/java/com/baeldung/retrofit/models/Repository.java Normal file
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@ -0,0 +1,32 @@
package com.baeldung.retrofit.models;
/**
* GitHub Repository
* @author hany
*
*/
public class Repository {
private String name;
private String description;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
@Override
public String toString() {
return "Repository [name=" + name + ", description=" + description + "]";
}
}

33
libraries/src/main/java/com/baeldung/retrofit/rx/GitHubRxApi.java Normal file
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@ -0,0 +1,33 @@
package com.baeldung.retrofit.rx;
import java.util.List;
import com.baeldung.retrofit.models.Contributor;
import com.baeldung.retrofit.models.Repository;
import retrofit2.http.GET;
import retrofit2.http.Path;
import rx.Observable;
public interface GitHubRxApi {
/**
* List GitHub repositories of user
* @param user GitHub Account
* @return GitHub repositories
*/
@GET("users/{user}/repos")
Observable<List<Repository>> listRepos(@Path("user") String user);
/**
* List Contributors of a GitHub Repository
* @param user GitHub Account
* @param repo GitHub Repository
* @return GitHub Repository Contributors
*/
@GET("repos/{user}/{repo}/contributors")
Observable<List<Contributor>> listRepoContributors(
@Path("user") String user,
@Path("repo") String repo);
}

13
libraries/src/main/java/com/baeldung/retrofit/rx/GitHubRxApp.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.retrofit.rx;
import java.io.IOException;
public class GitHubRxApp {
public static void main(String[] args) throws IOException {
String userName = "eugenp";
new GitHubRxService().getTopContributors(userName)
.subscribe(System.out::println);
}
}

33
libraries/src/main/java/com/baeldung/retrofit/rx/GitHubRxService.java Normal file
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@ -0,0 +1,33 @@
package com.baeldung.retrofit.rx;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava.RxJavaCallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;
import rx.Observable;
public class GitHubRxService {
private GitHubRxApi gitHubApi;
public GitHubRxService() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.github.com/")
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.build();
gitHubApi = retrofit.create(GitHubRxApi.class);
}
public Observable<String> getTopContributors(String userName) {
return gitHubApi.listRepos(userName)
.flatMap( repos -> Observable.from(repos))
.flatMap( repo -> gitHubApi.listRepoContributors(userName, repo.getName()) )
.flatMap( contributers -> Observable.from(contributers))
.filter( c -> c.getContributions() > 100)
.sorted( (a, b) -> b.getContributions() - a.getContributions() )
.map( c -> c.getName())
.distinct();
}
}

65
libraries/src/test/java/com/baeldung/retrofit/basic/GitHubBasicApiTest.java Normal file
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@ -0,0 +1,65 @@
package com.baeldung.retrofit.basic;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import com.baeldung.retrofit.basic.GitHubBasicApi;
import com.baeldung.retrofit.models.Contributor;
import com.baeldung.retrofit.models.Repository;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
public class GitHubBasicApiTest {
GitHubBasicApi gitHub;
@Before
public void init() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.github.com/")
.addConverterFactory(GsonConverterFactory.create())
.build();
gitHub = retrofit.create(GitHubBasicApi.class);
}
@Test
public void whenListRepos_thenExpectReposThatContainTutorials() {
try {
List<Repository> repos = gitHub
.listRepos("eugenp")
.execute()
.body();
assertThat(repos)
.isNotEmpty()
.extracting(Repository::getName).contains("tutorials");
} catch (IOException e) {
fail("Can not communicate with GitHub API");
}
}
@Test
public void whenListRepoContributers_thenExpectContributorsThatContainEugenp() {
try {
List<Contributor> contributors = gitHub
.listRepoContributors("eugenp", "tutorials")
.execute()
.body();
assertThat(contributors)
.isNotEmpty()
.extracting(Contributor::getName).contains("eugenp");
} catch (IOException e) {
fail("Can not communicate with GitHub API");
}
}
}

53
libraries/src/test/java/com/baeldung/retrofit/rx/GitHubRxApiTest.java Normal file
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@ -0,0 +1,53 @@
package com.baeldung.retrofit.rx;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Before;
import org.junit.Test;
import com.baeldung.retrofit.models.Contributor;
import com.baeldung.retrofit.models.Repository;
import com.baeldung.retrofit.rx.GitHubRxApi;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava.RxJavaCallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;
public class GitHubRxApiTest {
GitHubRxApi gitHub;
@Before
public void init() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.github.com/")
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.build();
gitHub = retrofit.create(GitHubRxApi.class);
}
@Test
public void whenListRepos_thenExpectReposThatContainTutorials() {
gitHub
.listRepos("eugenp")
.subscribe( repos -> {
assertThat(repos)
.isNotEmpty()
.extracting(Repository::getName).contains("tutorials");
});
}
@Test
public void whenListRepoContributers_thenExpectContributorsThatContainEugenp() {
gitHub
.listRepoContributors("eugenp", "tutorials")
.subscribe(contributors -> {
assertThat(contributors)
.isNotEmpty()
.extracting(Contributor::getName).contains("eugenp");
});
}
}