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BAEL-4204 - Adding Interceptors in OkHTTP (#10539) 

* BAEL-4706 - Spring Boot with Spring Batch

* BAEL-3948 - Fix test(s) in spring-batch which leaves repository.sqlite
changed

* BAEL-4736 - Convert JSONArray to List of Object using camel-jackson

* BAEL-4756 - Mockito MockSettings

* BAEL-4756 - Mockito MockSettings - fix spelling

* BAEL-2674 - Upgrade the Okhttp article

* BAEL-4204 - Adding Interceptors in OkHTTP

Co-authored-by: Jonathan Cook <jcook@sciops.esa.int>
This commit is contained in:
Jonathan Cook 2021-03-04 18:29:11 +01:00 committed by GitHub
parent ab0cef67fb
commit 49da1ed251
6 changed files with 196 additions and 5 deletions
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15
libraries-http-2/pom.xml
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@ -1,7 +1,7 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>libraries-http-2</artifactId>
<name>libraries-http-2</name>
@ -13,12 +13,17 @@
</parent>
<dependencies>
<!-- Dependencies for response decoder with okhttp -->
<!-- Dependencies for response decoder with okhttp -->
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>${okhttp.version}</version>
</dependency>
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>logging-interceptor</artifactId>
<version>${okhttp.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
@ -81,9 +86,9 @@
</dependencies>
<properties>
<okhttp.version>3.14.2</okhttp.version>
<okhttp.version>4.9.1</okhttp.version>
<gson.version>2.8.5</gson.version>
<mockwebserver.version>3.14.2</mockwebserver.version>
<mockwebserver.version>4.9.1</mockwebserver.version>
<jetty.httpclient.version>1.0.3</jetty.httpclient.version>
<jetty.server.version>9.4.19.v20190610</jetty.server.version>
<rxjava2.version>2.2.11</rxjava2.version>

18
libraries-http-2/src/main/java/com/baeldung/okhttp/interceptors/CacheControlResponeInterceptor.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.okhttp.interceptors;
import java.io.IOException;
import okhttp3.Interceptor;
import okhttp3.Response;
public class CacheControlResponeInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Response response = chain.proceed(chain.request());
return response.newBuilder()
.header("Cache-Control", "no-store")
.build();
}
}

21
libraries-http-2/src/main/java/com/baeldung/okhttp/interceptors/ErrorMessage.java Normal file
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@ -0,0 +1,21 @@
package com.baeldung.okhttp.interceptors;
public class ErrorMessage {
private final int status;
private final String detail;
public ErrorMessage(int status, String detail) {
this.status = status;
this.detail = detail;
}
public int getStatus() {
return status;
}
public String getDetail() {
return detail;
}
}

32
libraries-http-2/src/main/java/com/baeldung/okhttp/interceptors/ErrorResponseInterceptor.java Normal file
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@ -0,0 +1,32 @@
package com.baeldung.okhttp.interceptors;
import java.io.IOException;
import com.google.gson.Gson;
import okhttp3.Interceptor;
import okhttp3.MediaType;
import okhttp3.Response;
import okhttp3.ResponseBody;
public class ErrorResponseInterceptor implements Interceptor {
public static final MediaType APPLICATION_JSON = MediaType.get("application/json; charset=utf-8");
@Override
public Response intercept(Chain chain) throws IOException {
Response response = chain.proceed(chain.request());
if(!response.isSuccessful()) {
Gson gson = new Gson();
String body = gson.toJson(new ErrorMessage(response.code(), "The response from the server was not OK"));
ResponseBody responseBody = ResponseBody.create(body, APPLICATION_JSON);
return response.newBuilder()
.body(responseBody)
.build();
}
return response;
}
}

25
libraries-http-2/src/main/java/com/baeldung/okhttp/interceptors/SimpleLoggingInterceptor.java Normal file
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@ -0,0 +1,25 @@
package com.baeldung.okhttp.interceptors;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;
public class SimpleLoggingInterceptor implements Interceptor {
private static final Logger LOGGER = LoggerFactory.getLogger(SimpleLoggingInterceptor.class);
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
LOGGER.info("Intercepted headers: {} from URL: {}", request.headers(), request.url());
return chain.proceed(request);
}
}

90
libraries-http-2/src/test/java/com/baeldung/okhttp/interceptors/InterceptorIntegrationTest.java Normal file
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@ -0,0 +1,90 @@
package com.baeldung.okhttp.interceptors;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import org.junit.Rule;
import org.junit.Test;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.logging.HttpLoggingInterceptor;
import okhttp3.logging.HttpLoggingInterceptor.Level;
import okhttp3.mockwebserver.MockResponse;
import okhttp3.mockwebserver.MockWebServer;
public class InterceptorIntegrationTest {
@Rule
public MockWebServer server = new MockWebServer();
@Test
public void givenSimpleLogginInterceptor_whenRequestSent_thenHeadersLogged() throws IOException {
server.enqueue(new MockResponse().setBody("Hello Baeldung Readers!"));
OkHttpClient client = new OkHttpClient.Builder()
.addNetworkInterceptor(new SimpleLoggingInterceptor())
.build();
Request request = new Request.Builder()
.url(server.url("/greeting"))
.header("User-Agent", "A Baeldung Reader")
.build();
try (Response response = client.newCall(request).execute()) {
assertEquals("Response code should be: ", 200, response.code());
assertEquals("Body should be: ", "Hello Baeldung Readers!", response.body().string());
}
}
@Test
public void givenResponseInterceptor_whenRequestSent_thenCacheControlSetToNoStore() throws IOException {
server.enqueue(new MockResponse().setBody("Hello Baeldung Readers!"));
OkHttpClient client = new OkHttpClient.Builder()
.addInterceptor(getHttpLogger())
.addInterceptor(new CacheControlResponeInterceptor())
.build();
Request request = new Request.Builder()
.url(server.url("/greeting"))
.header("User-Agent", "A Baeldung Reader")
.build();
try (Response response = client.newCall(request).execute()) {
assertEquals("Response code should be: ", 200, response.code());
assertEquals("Body should be: ", "Hello Baeldung Readers!", response.body().string());
assertEquals("Response cache-control should be", "no-store", response.header("Cache-Control"));
}
}
@Test
public void givenErrorResponseInterceptor_whenResponseIs500_thenBodyIsJsonWithStatus() throws IOException {
server.enqueue(new MockResponse().setResponseCode(500).setBody("Hello Baeldung Readers!"));
OkHttpClient client = new OkHttpClient.Builder()
.addInterceptor(getHttpLogger())
.addInterceptor(new ErrorResponseInterceptor())
.build();
Request request = new Request.Builder()
.url(server.url("/greeting"))
.header("User-Agent", "A Baeldung Reader")
.build();
try (Response response = client.newCall(request).execute()) {
assertEquals("Response code should be: ", 500, response.code());
assertEquals("Body should be: ", "{\"status\":500,\"detail\":\"The response from the server was not OK\"}",
response.body().string());
}
}
private HttpLoggingInterceptor getHttpLogger() {
HttpLoggingInterceptor logger = new HttpLoggingInterceptor();
logger.setLevel(Level.HEADERS);
return logger;
}
}