hoverfly-java-grpc is an extension to hoverfly-java which provides additional configurations for enabling gRPC capture and simulation.

Following these steps to start using hoverfly-java-grpc:

1. Install Hoverfly self-signed certificate. A client must be configured to trust Hoverfly certificate for Hoverfly to perform MITM proxying. This is usually taken care of by Hoverfly Java via configuring the default SSLContext. However GCP Java Client neither use default SSLContext or allow setting a custom SSLContext. So here is what you need to do instead:

   • First download the certificate from Hoverfly Git repo:

     wget https://raw.githubusercontent.com/SpectoLabs/hoverfly/master/core/cert.pem

   • Then manually add the Hoverfly self-signed cert to the global Java keystore with the following command:

     sudo $JAVA_HOME/bin/keytool -import -alias hoverfly -keystore $JAVA_HOME/jre/lib/security/cacerts -file cert.pem

2. Import both hoverfly-java-grpc and hoverfly-java (version 0.12.0 or above) into your Maven or Gradle build file.

   For Gradle:

    dependencies {
        testCompile 'io.specto:hoverfly-java-grpc:0.12.0'
        testCompile 'io.specto:hoverfly-java:0.12.0'
    }

   For Maven:

   <dependencies>
       <dependency>
             <groupId>io.specto</groupId>
             <artifactId>hoverfly-java-grpc</artifactId>
             <version>0.12.0</version>
             <scope>test</scope>
       </dependency>
       <dependency>
            <groupId>io.specto</groupId>
            <artifactId>hoverfly-java</artifactId>
            <version>0.12.0</version>
            <scope>test</scope>
      </dependency>
   </dependencies>

Whenever you need to capture or simulate the GCP APIs, just create a HoverflyRule as you would do normally. The only difference is that you pass a new GrpcConfig() to the static factory method instead of the localConfigs(). It will configure HoverflyRule to run Hoverfly with gRPC support.

    @ClassRule
    public static HoverflyRule hoverflyRule = HoverflyRule.inCaptureOrSimulationMode(
            "simulation.json", 
            new GrpcConfig().simulationPreprocessor(new GcpApiSimulationPreprocessor()));

Note: The GCP OAuth request body contains time-sensitive data, and does not exactly match on previous captured data. The code above set a GcpApiSimulationPreprocessor to remove GCP authentication request body from matching.

Before you run your tests that use hoverfly-java-grpc in your build pipeline, you need to install Hoverfly self-signed cert to the default JAVA keystore.

You can use the following command in your CI configs:

sudo $JAVA_HOME/bin/keytool -import -alias hoverfly -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass ${KEY_STORE_PASS} -noprompt -file cert.pem

You can either download the certificate from here or store it in your project.

The default JAVA keystore pass is changeit

Use hoverfly-java-grpc requires a valid license. You need to make sure your license file is named hoverfly_license and can be found on classpath.

Putting the license file under test/resources folder is usually sufficient.

Please contact SpectoLabs if you require a license.

(c) SpectoLabs 2019.