Varnish Exec

Java library and JUnit rule for running Varnish Cache daemon.

• Modules
• Requirements
• Installation
• Usage
• Examples
• Customization
• Changelog
• License

Modules

• varnish-exec-core - Core module
• varnish-exec-junit - Integration with the JUnit
• varnish-exec-spring - Integration with the Spring TestContext Framework

Requirements

• JDK 8
• Varnish Cache 3.0, 4.0 or 5.0

Installation

Varnish Exec is available in Maven Central.

Apache Maven:

<dependencies>
    <dependency>
        <groupId>com.github.platan</groupId>
        <artifactId>varnish-exec-(core|junit|spring)</artifactId>
        <version>0.2.1</version>
        <scope>test</scope>
    </dependency>
</dependencies>

Gradle:

repositories {
    mavenCentral()
}

dependencies {
    testCompile 'com.github.platan:varnish-exec-(core|junit|spring):0.2.1'
}

In order to install it in your local Maven repository run:

./gradlew install

Usage

JUnit test using rule:

import com.github.platan.varnishexec.VarnishCommand;
import com.github.platan.varnishexec.junit.VarnishResource;

import org.junit.ClassRule;
...

public class MyTest {

    private static final VarnishCommand VARNISH_COMMAND = VarnishCommand.newBuilder()
        .withConfigFile("./src/test/etc/varnish/default.vcl").build();

    @ClassRule
    public static VarnishResource varnishResource = VarnishResource.build(VARNISH_COMMAND);

    @Test
    public void testSomethingWithRunningVarnish() throws Exception {
        int port = varnishResource.getPort();
        ...
    }
}

In the above example we use a ClassRule. Varnish Cache daemon starts once before all tests run and shutdowns after they are finished.

Another example using core varnish-exec API:

import org.junit.AfterClass;
import org.junit.BeforeClass;

import com.github.platan.varnishexec.VarnishCommand;
import com.github.platan.varnishexec.VarnishExecs;
import com.github.platan.varnishexec.VarnishProcess;
...

public class MyTest {

    private static VarnishProcess varnishProcess;

    @BeforeClass
    public static void setUpClass() {
        VarnishCommand varnishCommand = VarnishCommand.newBuilder()
                .withConfigFile("./src/test/etc/varnish/default.vcl").build();
        varnishProcess = VarnishExecs.start(varnishCommand);
    }

    @AfterClass
    public static void tearDownClass() {
        varnishProcess.kill();
    }

    @Test
    public void testSomethingWithRunningVarnish() throws Exception {
        int port = varnishProcess.getPort();
        ...
    }
}

An example using the VarnishTest annotation integrating varnish-exec with the Spring TestContext Framework:

import com.github.platan.varnishexec.spring.VarnishTest;

import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@VarnishTest(configFile = "./src/test/etc/varnish/default.vcl")
public class MyTest {

    @Value("${local.varnish.port}")
    private String varnishPort;

    @Test
    public void testSomethingWithRunningVarnish() {
        ...
    }
}

The above examples will start a new process with default values:

varnishd -a localhost:10080 -F -f ./src/test/etc/varnish/default.vcl -n /tmp

Examples

Examples can be found on varnish-exec-example.

Customization

Use VarnishCommand to override default arguments. Varnish daemon command can be configured by varnishdCommand parameter.

All supported varnishd options:

option	varnishd parameter	parameter	default value
listening address	-a	address	localhost:10080
backend server	-b	backend
VCL configuration file	-f	configFile
management interface address	-T	managementAddress
instance name	-n	name	/tmp
storage backend	-s	storage

Build a command:

VarnishCommand command = VarnishCommand.newBuilder()
                .withAddress("localhost", 80)
                .withConfigFile("service.vcl")
                .withManagementAddress("localhost", 10000)
                .withName("service")
                .withStorage("malloc,1G")
                .withVarnishdCommand("/usr/sbin/varnishd").build();

Then pass it to VarnishResource:

VarnishResource varnishResource = VarnishResource.build(command);

Or to VarnishExecs#start:

VarnishProcess varnishProcess = VarnishExecs.start(command);

Spring

The VarnishTest class allows to define all options listed above. Furthermore, this class:

• can set a random name and a random port
• replaces @local.port@ with a value of an application port (local.server.port) in a copy of VCL configuration file
• sets local.varnish.port property with a value of a varnish port

Check a documentation for more information.

Changelog

0.2.1 (2016-12-16)

• a random port is selected from the range 1024 - 65535

0.2.0 (2016-09-03)

• (new feature) added varnish-exec-spring module providing integration with the Spring TestContext Framework

0.1.0 (2015-01-25)

• Initial release

License

This project is licensed under the MIT license.