diff --git a/spring-cloud-contract.html b/spring-cloud-contract.html index f26bd2365c..bd696d8c9c 100644 --- a/spring-cloud-contract.html +++ b/spring-cloud-contract.html @@ -785,39 +785,16 @@ $(addBlockSwitches);
  • Extending the DSL
    • -
  • Pluggable architecture - -
    • -
  • Links
    • - - +
  • Converters
    • +
  • Stub converters
    • +
  • Example of a custom HTTP Server Stub
    • +
  • Example of a custom Stub Downloader Provider
    • @@ -7577,78 +7554,22 @@ public class PatternUtils {
    -
    package com.example;
+
    Unresolved directive in verifier/contract.adoc - include::https://raw.githubusercontent.com/spring-cloud-samples/spring-cloud-contract-samples/master/common/src/main/java/com/example/ConsumerUtils.java[]
 
-import org.springframework.cloud.contract.spec.internal.ClientDslProperty;
-import org.springframework.cloud.contract.spec.internal.DslProperty;
+*ProducerUtils* contains functions used by the **producer**.
 
-/**
- * DSL Properties passed to the DSL from the consumer's perspective.
- * That means that on the input side {@code Request} for HTTP
- * or {@code Input} for messaging you can have a regular expression.
- * On the {@code Response} for HTTP or {@code Output} for messaging
- * you have to have a concrete value.
- *
- * @author Marcin Grzejszczak
- */
-public class ConsumerUtils {
-	/**
-	 * Consumer side property. By using the {@link ClientDslProperty}
-	 * you can omit most of boilerplate code from the perspective
-	 * of dynamic values. Example
-	 *
-	 * <pre>
-	 * {@code
-	 * request {
-	 *     body(
-	 *         [ age: $(ConsumerUtils.oldEnough())]
-	 *     )
-	 * }
-	 * </pre>
-	 *
-	 * That way the consumer side value of age field will be
-	 * a regular expression and the producer side will be generated.
-	 *
-	 * @author Marcin Grzejszczak
-	 */
-	public static ClientDslProperty oldEnough() {
-		return new ClientDslProperty(PatternUtils.oldEnough());
-	}
-
-	/**
-	 * Consumer side property. By using the {@link ClientDslProperty}
-	 * you can omit most of boilerplate code from the perspective
-	 * of dynamic values. Example
-	 *
-	 * <pre>
-	 * {@code
-	 * request {
-	 *     body(
-	 *         [ name: $(ConsumerUtils.anyName())]
-	 *     )
-	 * }
-	 * </pre>
-	 *
-	 * That way the consumer will be a regular expression and the
-	 * producer side value will be equal to {@code marcin}
-	 */
-	public static DslProperty anyName() {
-		return new DslProperty<>(PatternUtils.anyName(), "marcin");
-	}
-}
    
+[source,java]
    -

    ProducerUtils contains functions used by the producer.

    +

    package com.example;

    -
    -
    -
    package com.example;
-
-import org.springframework.cloud.contract.spec.internal.ServerDslProperty;
-
-/**
- * DSL Properties passed to the DSL from the producer's perspective.
+
    
+
    import org.springframework.cloud.contract.spec.internal.ServerDslProperty;
    
+
    
+
    
+
    /**
+ * DSL Properties passed to the DSL from the producer’s perspective.
  * That means that on the input side {@code Request} for HTTP
  * or {@code Input} for messaging you have to have a concrete value.
  * On the {@code Response} for HTTP or {@code Output} for messaging
@@ -7656,9 +7577,11 @@ import org.springframework.cloud.contract.spec.internal.ServerDslProperty;
  *
  * @author Marcin Grzejszczak
  */
-public class ProducerUtils {
-
-	/**
+public class ProducerUtils {
    
+
    
+
    
+
    
+
    	/**
 	 * Producer side property. By using the {@link ProducerUtils}
 	 * you can omit most of boilerplate code from the perspective
 	 * of dynamic values. Example
@@ -7678,50 +7601,55 @@ public class ProducerUtils {
 	public static ServerDslProperty ok() {
 		return new ServerDslProperty(PatternUtils.ok());
 	}
-}
    
+}
    - -
    -
    Adding the dependency to project
    -
    -

    In order for the plugins and IDE to be able to reference the common JAR classes you need -to pass the dependency to your project.

    -
    -
    -
    Test dependency in project’s dependencies
    -
    -

    First add the common jar dependency as a test dependency. That way since your -contracts files are available at test resources path, automatically the -common jar classes will be visible in your Groovy files.

    -
    -
    -
    Maven
    +
    -
    <dependency>
+
    ===== Adding the dependency to project
+
+In order for the plugins and IDE to be able to reference the common JAR classes you need
+to pass the dependency to your project.
+
+====== Test dependency in project's dependencies
+
+First add the common jar dependency as a test dependency. That way since your
+contracts files are available at test resources path, automatically the
+common jar classes will be visible in your Groovy files.
+
+[source,xml,indent=0,subs="verbatim,attributes",role="primary"]
+.Maven
    
+
    +
    +
    +

    <dependency> <groupId>com.example</groupId> <artifactId>beer-common</artifactId> <version>${project.version}</version> <scope>test</scope> -</dependency> +</dependency>

    -
    -
    -
    Gradle
    +
    -
    testCompile("com.example:beer-common:0.0.1-SNAPSHOT")
    +
    [source,groovy,indent=0,subs="verbatim,attributes",role="secondary"]
+.Gradle
    -
    -
    -
    Test dependency in plugin’s dependencies
    -

    Now you have to add the dependency for the plugin to reuse at runtime.

    +

    testCompile("com.example:beer-common:0.0.1-SNAPSHOT")

    -
    -
    Maven
    +
    -
    <plugin>
+
    ====== Test dependency in plugin's dependencies
+
+Now you have to add the dependency for the plugin to reuse at runtime.
+
+[source,xml,indent=0,subs="verbatim,attributes",role="primary"]
+.Maven
    
+
    +
    +
    +

    <plugin> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-contract-maven-plugin</artifactId> <version>${spring-cloud-contract.version}</version> @@ -7742,41 +7670,49 @@ common jar classes will be visible in your Groovy files.

    <scope>compile</scope> </dependency> </dependencies> -</plugin>     -
    -
    -
    -
    Gradle
    -
    -
    classpath "com.example:beer-common:0.0.1-SNAPSHOT"
    -
    -
    -
    -
    -
    Referencing classes in DSLs
    -
    -

    Now you can reference your classes in your DSL. Example:

    +</plugin>

    -
    package contracts.beer.rest
+
    [source,groovy,indent=0,subs="verbatim,attributes",role="secondary"]
+.Gradle
    
+
    +
    +
    +

    classpath "com.example:beer-common:0.0.1-SNAPSHOT"

    +
    +
    +
    +
    ====== Referencing classes in DSLs
 
-import org.springframework.cloud.contract.spec.Contract
+Now you can reference your classes in your DSL. Example:
 
-import static com.example.ConsumerUtils.oldEnough
-import static com.example.ProducerUtils.ok
-
-Contract.make {
+[source,groovy]
    +
    +
    +
    +

    package contracts.beer.rest

    +
    +
    +

    import org.springframework.cloud.contract.spec.Contract

    +
    +
    +

    import static com.example.ConsumerUtils.oldEnough +import static com.example.ProducerUtils.ok

    +
    +
    +

    Contract.make { request { description(""" -Represents a successful scenario of getting a beer - -given: +Represents a successful scenario of getting a beer

    +
    +
    +

    given: client is old enough when: he applies for a beer then: - we'll grant him the beer + we’ll grant him the beer """) method 'POST' url '/check' @@ -7798,31 +7734,28 @@ then: contentType(applicationJson()) } } -} -

    -
    -
    -
    - - -
    -

    Pluggable architecture

    -
    -

    There are cases where you have your contracts defined in other formats -like YAML, RAML or PACT. On the other hand you’d like to profit from -the test and stubs generation. It’s really easy to add your own implementation -of either of those. Also you can customize the way tests are generated (for example you can generate -tests for other languages) and you can do the same for stubs generation (you can generate -stubs for other stub http server implementations).

    -
    -
    -

    Custom contract converter

    -
    -

    Let’s assume that your contract is written in a YAML file like this:

    +}

    -
    request:
+
    === Pluggable architecture
+
+There are cases where you have your contracts defined in other formats
+like YAML, RAML or PACT. On the other hand you'd like to profit from
+the test and stubs generation. It's really easy to add your own implementation
+of either of those. Also you can customize the way tests are generated (for example you can generate
+tests for other languages) and you can do the same for stubs generation (you can generate
+stubs for other stub http server implementations).
+
+==== Custom contract converter
+
+Let's assume that your contract is written in a YAML file like this:
+
+[source,yml]
    
+
    +
    +
    +

    request: url: /foo method: PUT headers: @@ -7834,17 +7767,20 @@ response: headers: foo2: bar body: - foo2: bar -

    -
    -
    -

    Thanks to the interface

    + foo2: bar

    -
    package org.springframework.cloud.contract.spec
+
    Thanks to the interface
 
-/**
+[source,groovy]
    
+
    +
    +
    +

    package org.springframework.cloud.contract.spec

    +
    +
    +

    /** * Converter to be used to convert FROM {@link File} TO {@link Contract} * and from {@link Contract} to {@code T} * @@ -7853,120 +7789,137 @@ response: * @author Marcin Grzejszczak * @since 1.1.0 */ -interface ContractConverter<T> { - - /** - * Should this file be accepted by the converter. Can use the file extension - * to check if the conversion is possible. - * - * @param file - file to be considered for conversion - * @return - {@code true} if the given implementation can convert the file - */ - boolean isAccepted(File file) - - /** - * Converts the given {@link File} to its {@link Contract} representation - * - * @param file - file to convert - * @return - {@link Contract} representation of the file - */ - Collection<Contract> convertFrom(File file) - - /** +interface ContractConverter<T> {

    +
    +
    +
    +
    /**
+ * Should this file be accepted by the converter. Can use the file extension
+ * to check if the conversion is possible.
+ *
+ * @param file - file to be considered for conversion
+ * @return - {@code true} if the given implementation can convert the file
+ */
+boolean isAccepted(File file)
    +
    +
    +
    +
    +
    /**
+ * Converts the given {@link File} to its {@link Contract} representation
+ *
+ * @param file - file to convert
+ * @return - {@link Contract} representation of the file
+ */
+Collection<Contract> convertFrom(File file)
    +
    +
    +
    +
    +
    	/**
 	 * Converts the given {@link Contract} to a {@link T} representation
 	 *
 	 * @param contract - the parsed contract
 	 * @return - {@link T} the type to which we do the conversion
 	 */
 	T convertTo(Collection<Contract> contract)
-}
    +}
    -
    -

    you can register your own implementation of a contract structure converter. +

    +
    +
    you can register your own implementation of a contract structure converter.
 Your implementation needs to state the condition on which it should start the
-conversion. Also you have to define how to perform that conversion in both ways.
    
-
    -
    - - - - - -
    -
    Important
    -    		 -Once you create your implementation you have to create a /META-INF/spring.factories -file in which you provide the fully qualified name of your implementation. -
    -
    -
    -

    Example of a spring.factories file

    -
    -
    -
    -
    # Converters
-org.springframework.cloud.contract.spec.ContractConverter=\
-org.springframework.cloud.contract.verifier.converter.YamlContractConverter
    -
    -
    -
    -

    and the YAML implementation

    -
    -
    -
    -
    package org.springframework.cloud.contract.verifier.converter
+conversion. Also you have to define how to perform that conversion in both ways.
 
-import groovy.transform.CompileStatic
+IMPORTANT: Once you create your implementation you have to create a `/META-INF/spring.factories`
+file in which you provide the fully qualified name of your implementation.
+
+Example of a `spring.factories` file
+
+[source]
    +
    +
    +
    +
    +
    + + +

    Converters

    +
    +

    org.springframework.cloud.contract.spec.ContractConverter=\ +org.springframework.cloud.contract.verifier.converter.YamlContractConverter

    +
    +
    +
    +
    and the YAML implementation
+
+[source,groovy]
    +
    +
    +
    +

    package org.springframework.cloud.contract.verifier.converter

    +
    +
    +

    import groovy.transform.CompileStatic import org.springframework.cloud.contract.spec.Contract import org.springframework.cloud.contract.spec.ContractConverter import org.springframework.cloud.contract.spec.internal.Headers -import org.yaml.snakeyaml.Yaml - -/** +import org.yaml.snakeyaml.Yaml

    +
    +
    +

    /** * Simple converter from and to a {@link YamlContract} to a collection of {@link Contract} */ @CompileStatic -class YamlContractConverter implements ContractConverter<List<YamlContract>> { - - @Override - public boolean isAccepted(File file) { - String name = file.getName() - return name.endsWith(".yml") || name.endsWith(".yaml") - } - - @Override - public Collection<Contract> convertFrom(File file) { - try { - YamlContract yamlContract = new Yaml().loadAs(new FileInputStream(file), YamlContract.class) - return [Contract.make { - request { - method(yamlContract?.request?.method) - url(yamlContract?.request?.url) - headers { - yamlContract?.request?.headers?.each { String key, Object value -> - header(key, value) - } +class YamlContractConverter implements ContractConverter<List<YamlContract>> {

    +
    +
    +
    +
    @Override
+public boolean isAccepted(File file) {
+	String name = file.getName()
+	return name.endsWith(".yml") || name.endsWith(".yaml")
+}
    +
    +
    +
    +
    +
    @Override
+public Collection<Contract> convertFrom(File file) {
+	try {
+		YamlContract yamlContract = new Yaml().loadAs(new FileInputStream(file), YamlContract.class)
+		return [Contract.make {
+			request {
+				method(yamlContract?.request?.method)
+				url(yamlContract?.request?.url)
+				headers {
+					yamlContract?.request?.headers?.each { String key, Object value ->
+						header(key, value)
 					}
-					body(yamlContract?.request?.body)
 				}
-				response {
-					status(yamlContract?.response?.status)
-					headers {
-						yamlContract?.response?.headers?.each { String key, Object value ->
-							header(key, value)
-						}
+				body(yamlContract?.request?.body)
+			}
+			response {
+				status(yamlContract?.response?.status)
+				headers {
+					yamlContract?.response?.headers?.each { String key, Object value ->
+						header(key, value)
 					}
-					body(yamlContract?.response?.body)
 				}
-			}]
-		}
-		catch (FileNotFoundException e) {
-			throw new IllegalStateException(e)
-		}
+				body(yamlContract?.response?.body)
+			}
+		}]
 	}
-
-	@Override
+	catch (FileNotFoundException e) {
+		throw new IllegalStateException(e)
+	}
+}
    +
    +
    +
    +
    +
    	@Override
 	public List<YamlContract> convertTo(Collection<Contract> contracts) {
 		return contracts.collect { Contract contract ->
 			YamlContract yamlContract = new YamlContract()
@@ -7984,25 +7937,27 @@ class YamlContractConverter implements ContractConverter<List<YamlContract
 			return yamlContract
 		}
 	}
-}
    +}
    -
    -
    Pact converter
    -
    -

    Spring Cloud Contract comes with an out of the box support for Pact representation of contracts. -In other words instead of using the Groovy DSL you can use Pact files. In this section -we will present how to add such a support for your project.

    -
    -
    -
    Pact contract
    -
    -

    We will be working on the following example of a Pact contract. We’ve placed this file under -the src/test/resources/contracts folder.

    -
    -
    {
+
    ===== Pact converter
+
+Spring Cloud Contract comes with an out of the box support for https://docs.pact.io/[Pact] representation of contracts.
+In other words instead of using the Groovy DSL you can use Pact files. In this section
+we will present how to add such a support for your project.
+
+====== Pact contract
+
+We will be working on the following example of a Pact contract. We've placed this file under
+the `src/test/resources/contracts` folder.
+
+[source,javascript,indent=0]
    
+
    +
    +
    +

    { "provider": { "name": "Provider" }, @@ -8055,21 +8010,22 @@ the src/test/resources/contracts folder.

    "version": "2.4.18" } } -}     +}

    -
    -
    -
    -
    Pact for producers
    -
    -

    On the producer side you have add to your plugin configuration two additional dependencies. -One is the Spring Cloud Contract Pact support and the other represents the current -Pact version that you’re using.

    -
    -
    -
    Maven
    +
    -
    <plugin>
+
    ====== Pact for producers
+
+On the producer side you have add to your plugin configuration two additional dependencies.
+One is the Spring Cloud Contract Pact support and the other represents the current
+Pact version that you're using.
+
+[source,xml,indent=0,subs="verbatim,attributes",role="primary"]
+.Maven
    
+
    +
    +
    +

    <plugin> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-contract-maven-plugin</artifactId> <version>${spring-cloud-contract.version}</version> @@ -8089,33 +8045,45 @@ Pact version that you’re using.

    <version>2.4.18</version> </dependency> </dependencies> -</plugin>     -
    -
    -
    -
    Gradle
    -
    -
    classpath "org.springframework.cloud:spring-cloud-contract-spec-pact:${findProperty('verifierVersion') ?: verifierVersion}"
-classpath 'au.com.dius:pact-jvm-model:2.4.18'
    -
    -
    -
    -

    When you execute the build of your application a test, looking more or less like this, will be generated

    +</plugin>

    -
    @Test
+
    [source,groovy,indent=0,subs="verbatim,attributes",role="secondary"]
+.Gradle
    
+
    +
    +
    +

    classpath "org.springframework.cloud:spring-cloud-contract-spec-pact:${findProperty('verifierVersion') ?: verifierVersion}" +classpath 'au.com.dius:pact-jvm-model:2.4.18'

    +
    +
    +
    +
    When you execute the build of your application a test, looking more or less like this, will be generated
+
+[source,java,indent=0]
    +
    +
    +
    +
    +
    @Test
 public void validate_shouldMarkClientAsFraud() throws Exception {
 	// given:
 		MockMvcRequestSpecification request = given()
 				.header("Content-Type", "application/vnd.fraud.v1+json")
-				.body("{\"clientId\":\"1234567890\",\"loanAmount\":99999}");
-
-	// when:
-		ResponseOptions response = given().spec(request)
-				.put("/fraudcheck");
-
-	// then:
+				.body("{\"clientId\":\"1234567890\",\"loanAmount\":99999}");
    +
    +
    +
    +
    +
    // when:
+	ResponseOptions response = given().spec(request)
+			.put("/fraudcheck");
    +
    +
    +
    +
    +
    	// then:
 		assertThat(response.statusCode()).isEqualTo(200);
 		assertThat(response.header("Content-Type")).isEqualTo("application/vnd.fraud.v1+json;charset=UTF-8");
 	// and:
@@ -8123,15 +8091,18 @@ public void validate_shouldMarkClientAsFraud() throws Exception {
 		assertThatJson(parsedJson).field("rejectionReason").isEqualTo("Amount too high");
 	// and:
 		assertThat(parsedJson.read("$.fraudCheckStatus", String.class)).matches("FRAUD");
-}
    +}
    -
    -

    and the stub looking like this

    -
    -
    {
+
    and the stub looking like this
+
+[source,javascript,indent=0]
    
+
    +
    +
    +

    { "uuid" : "996ae5ae-6834-4db6-8fac-358ca187ab62", "request" : { "url" : "/fraudcheck", @@ -8154,21 +8125,22 @@ public void validate_shouldMarkClientAsFraud() throws Exception { "Content-Type" : "application/vnd.fraud.v1+json;charset=UTF-8" } } -} +}

    -
    - -
    -
    Pact for consumers
    -
    -

    On the producer side you have add to your project dependencies two additional dependencies. -One is the Spring Cloud Contract Pact support and the other represents the current -Pact version that you’re using.

    -
    -
    -
    Maven
    +
    -
    <dependency>
+
    ====== Pact for consumers
+
+On the producer side you have add to your project dependencies two additional dependencies.
+One is the Spring Cloud Contract Pact support and the other represents the current
+Pact version that you're using.
+
+[source,xml,indent=0,subs="verbatim,attributes",role="primary"]
+.Maven
    
+
    +
    +
    +

    <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-contract-spec-pact</artifactId> <scope>test</scope> @@ -8178,46 +8150,51 @@ Pact version that you’re using.

    <artifactId>pact-jvm-model</artifactId> <version>2.4.18</version> <scope>test</scope> -</dependency>     -
    -
    -
    -
    Gradle
    -
    -
    testCompile "org.springframework.cloud:spring-cloud-contract-spec-pact"
-testCompile 'au.com.dius:pact-jvm-model:2.4.18'
    -
    -
    -
    - - -
    -

    Custom test generator

    -
    -

    If you want to generate tests for different languages than Java or you’re -not happy with the way we’re building Java tests for you then you can register -your own implementation to do that.

    -
    -
    -

    Thanks to the interface

    +</dependency>

    -
    package org.springframework.cloud.contract.verifier.builder
+
    [source,groovy,indent=0,subs="verbatim,attributes",role="secondary"]
+.Gradle
    
+
    +
    +
    +

    testCompile "org.springframework.cloud:spring-cloud-contract-spec-pact" +testCompile 'au.com.dius:pact-jvm-model:2.4.18'

    +
    +
    +
    +
    ==== Custom test generator
 
-import groovy.transform.CompileStatic
+If you want to generate tests for different languages than Java or you're
+not happy with the way we're building Java tests for you then you can register
+your own implementation to do that.
+
+Thanks to the interface
+
+[source,groovy]
    +
    +
    +
    +

    package org.springframework.cloud.contract.verifier.builder

    +
    +
    +

    import groovy.transform.CompileStatic import org.springframework.cloud.contract.verifier.config.ContractVerifierConfigProperties -import org.springframework.cloud.contract.verifier.file.ContractMetadata - -/** +import org.springframework.cloud.contract.verifier.file.ContractMetadata

    +
    +
    +

    /** * Builds a single test. * * @since 1.1.0 */ @CompileStatic -interface SingleTestGenerator { - - /** +interface SingleTestGenerator {

    +
    +
    +
    +
    	/**
 	 * Creates contents of a single test class in which all test scenarios from
 	 * the contract metadata should be placed.
 	 *
@@ -8230,54 +8207,68 @@ interface SingleTestGenerator {
 	 */
 	String buildClass(ContractVerifierConfigProperties properties, Collection<ContractMetadata> listOfFiles,
 					  String className, String classPackage, String includedDirectoryRelativePath)
-}
    +}
    -
    -

    you can register your own implementation that generates a test. Again, it’s enough to provide -a proper spring.factories file. Example:

    -
    -
    org.springframework.cloud.contract.verifier.builder.SingleTestGenerator=/
-com.example.MyGenerator
    -
    -
    -
    -
    -

    Custom stub generator

    -
    -

    If you want to generate stubs for other stub server than WireMock it’s enough to - plug in your own implementation of this interface:

    -
    -
    -
    -
    package org.springframework.cloud.contract.verifier.converter
+
    you can register your own implementation that generates a test. Again, it's enough to provide
+a proper `spring.factories` file. Example:
 
-import groovy.transform.CompileStatic
+[source]
    
+
    +
    +
    +

    org.springframework.cloud.contract.verifier.builder.SingleTestGenerator=/ +com.example.MyGenerator

    +
    +
    +
    +
    ==== Custom stub generator
+
+If you want to generate stubs for other stub server than WireMock it's enough to
+ plug in your own implementation of this interface:
+
+[source,groovy]
    +
    +
    +
    +

    package org.springframework.cloud.contract.verifier.converter

    +
    +
    +

    import groovy.transform.CompileStatic import org.springframework.cloud.contract.spec.Contract -import org.springframework.cloud.contract.verifier.file.ContractMetadata - -/** +import org.springframework.cloud.contract.verifier.file.ContractMetadata

    +
    +
    +

    /** * Converts contracts into their stub representation. * * @since 1.1.0 */ @CompileStatic -interface StubGenerator { - - /** - * Returns {@code true} if the converter can handle the file to convert it into a stub. - */ - boolean canHandleFileName(String fileName) - - /** - * Returns the collection of converted contracts into stubs. One contract can - * result in multiple stubs. - */ - Map<Contract, String> convertContents(String rootName, ContractMetadata content) - - /** +interface StubGenerator {

    +
    +
    +
    +
    /**
+ * Returns {@code true} if the converter can handle the file to convert it into a stub.
+ */
+boolean canHandleFileName(String fileName)
    +
    +
    +
    +
    +
    /**
+ * Returns the collection of converted contracts into stubs. One contract can
+ * result in multiple stubs.
+ */
+Map<Contract, String> convertContents(String rootName, ContractMetadata content)
    +
    +
    +
    +
    +
    	/**
 	 * Returns the name of the converted stub file. If you have multiple contracts
 	 * in a single file then a prefix will be added to the generated file. If you
 	 * provide the {@link Contract#name} field then that field will override the
@@ -8288,220 +8279,246 @@ interface StubGenerator {
 	 * converter will create two files {@code 0_foo.json} and {@code 1_foo.json}
 	 */
 	String generateOutputFileNameForInput(String inputFileName)
-}
    +}
    -
    -

    you can register your own implementation that generate Stubs. Again, it’s enough to provide -a proper spring.factories file. Example:

    -
    -
    # Stub converters
-org.springframework.cloud.contract.verifier.converter.StubGenerator=\
-org.springframework.cloud.contract.verifier.wiremock.DslToWireMockClientConverter
    -
    -
    -
    -

    The default implementation is the WireMock stub generation.

    -
    -
    - - - - - -
    -
    Tip
    -    		 -You can provide multiple stub generator implementations. That way for example from a single -DSL as input you can e.g. produce WireMock stubs and Pact files too! -
    -
    -
    -
    -

    Custom Stub Runner

    -
    -

    If you decide to have a custom stub generation you also need a custom way of running -stubs with your different stub provider.

    -
    -
    -

    Let us assume that you’re using Moco to build your stubs. -You wrote a proper stub generator and your stubs got placed in a JAR file.

    -
    -
    -

    In order for Stub Runner to know how to run your stubs you have to define a custom - HTTP Stub server implementation. It can look like this:

    -
    -
    -
    -
    package org.springframework.cloud.contract.stubrunner.provider.moco
+
    you can register your own implementation that generate Stubs. Again, it's enough to provide
+a proper `spring.factories` file. Example:
 
-import com.github.dreamhead.moco.bootstrap.arg.HttpArgs
+[source]
    
+
    +
    +

    Stub converters

    +
    +

    org.springframework.cloud.contract.verifier.converter.StubGenerator=\ +org.springframework.cloud.contract.verifier.wiremock.DslToWireMockClientConverter

    +
    +
    +
    +
    The default implementation is the WireMock stub generation.
+
+TIP: You can provide multiple stub generator implementations. That way for example from a single
+DSL as input you can e.g. produce WireMock stubs and Pact files too!
+
+==== Custom Stub Runner
+
+If you decide to have a custom stub generation you also need a custom way of running
+stubs with your different stub provider.
+
+Let us assume that you're using https://github.com/dreamhead/moco[Moco] to build your stubs.
+You wrote a proper stub generator and your stubs got placed in a JAR file.
+
+In order for Stub Runner to know how to run your stubs you have to define a custom
+ HTTP Stub server implementation. It can look like this:
+
+[source,groovy]
    +
    +
    +
    +

    package org.springframework.cloud.contract.stubrunner.provider.moco

    +
    +
    +

    import com.github.dreamhead.moco.bootstrap.arg.HttpArgs import com.github.dreamhead.moco.runner.JsonRunner import org.springframework.cloud.contract.stubrunner.HttpServerStub -import org.springframework.util.SocketUtils - -class MocoHttpServerStub implements HttpServerStub { - - private boolean started - private JsonRunner runner - private int port - - @Override - int port() { - if (!isRunning()) { - return -1 - } - return port +import org.springframework.util.SocketUtils

    +
    +
    +

    class MocoHttpServerStub implements HttpServerStub {

    +
    +
    +
    +
    private boolean started
+private JsonRunner runner
+private int port
    +
    +
    +
    +
    +
    @Override
+int port() {
+	if (!isRunning()) {
+		return -1
 	}
-
-	@Override
-	boolean isRunning() {
-		return started
-	}
-
-	@Override
-	HttpServerStub start() {
-		return start(SocketUtils.findAvailableTcpPort())
-	}
-
-	@Override
-	HttpServerStub start(int port) {
-		this.port = port
+	return port
+}
    +
    +
    +
    +
    +
    @Override
+boolean isRunning() {
+	return started
+}
    +
    +
    +
    +
    +
    @Override
+HttpServerStub start() {
+	return start(SocketUtils.findAvailableTcpPort())
+}
    +
    +
    +
    +
    +
    @Override
+HttpServerStub start(int port) {
+	this.port = port
+	return this
+}
    +
    +
    +
    +
    +
    @Override
+HttpServerStub stop() {
+	if (!isRunning()) {
 		return this
 	}
-
-	@Override
-	HttpServerStub stop() {
-		if (!isRunning()) {
-			return this
-		}
-		this.runner.stop()
-		return this
-	}
-
-	@Override
-	HttpServerStub registerMappings(Collection<File> stubFiles) {
-		List<InputStream> streams = stubFiles.collect { it.newInputStream() }
-		this.runner = JsonRunner.newJsonRunnerWithStreams(streams,
-				HttpArgs.httpArgs().withPort(this.port).build())
-		this.runner.run()
-		this.started = true
-		return this
-	}
-
-	@Override
+	this.runner.stop()
+	return this
+}
    +
    +
    +
    +
    +
    @Override
+HttpServerStub registerMappings(Collection<File> stubFiles) {
+	List<InputStream> streams = stubFiles.collect { it.newInputStream() }
+	this.runner = JsonRunner.newJsonRunnerWithStreams(streams,
+			HttpArgs.httpArgs().withPort(this.port).build())
+	this.runner.run()
+	this.started = true
+	return this
+}
    +
    +
    +
    +
    +
    	@Override
 	boolean isAccepted(File file) {
 		return file.name.endsWith(".json")
 	}
-}
    +}
    -
    -

    and just register it in your spring.factories file

    -
    -
    # Example of a custom HTTP Server Stub
-org.springframework.cloud.contract.stubrunner.HttpServerStub=\
-org.springframework.cloud.contract.stubrunner.provider.moco.MocoHttpServerStub
    -
    -
    -
    -

    that way you’ll be able to run stubs using Moco.

    -
    -
    - - - - - -
    -
    Important
    -    		 -If you don’t provide any implementation then the default one - WireMock based -will be picked. If you provide more than one then the first one on the list will be picked. -
    -
    -
    -
    -

    Custom Stub Downloader

    -
    -

    You can customize the way your stubs are downloaded. If you don’t want to download the JARs -from Nexus / Artifactory in the way we do by default you can set your own implementation. -Below you can find an example of a Stub Downloader Provider that takes json files from the test resources -from classpath, copies them to a temp file and then passes that temporary folder - as a root for the stubs.

    -
    -
    -
    -
    package org.springframework.cloud.contract.stubrunner.provider.moco
+
    and just register it in your `spring.factories` file
 
-import org.springframework.cloud.contract.stubrunner.StubConfiguration
+[source]
    
+
    +
    +

    Example of a custom HTTP Server Stub

    +
    +

    org.springframework.cloud.contract.stubrunner.HttpServerStub=\ +org.springframework.cloud.contract.stubrunner.provider.moco.MocoHttpServerStub

    +
    +
    +
    +
    that way you'll be able to run stubs using Moco.
+
+IMPORTANT: If you don't provide any implementation then the default one - WireMock based
+will be picked. If you provide more than one then the first one on the list will be picked.
+
+==== Custom Stub Downloader
+
+You can customize the way your stubs are downloaded. If you don't want to download the JARs
+from Nexus / Artifactory in the way we do by default you can set your own implementation.
+Below you can find an example of a Stub Downloader Provider that takes `json` files from the test resources
+from classpath, copies them to a temp file and then passes that temporary folder
+ as a root for the stubs.
+
+[source,java]
    +
    +
    +
    +

    package org.springframework.cloud.contract.stubrunner.provider.moco

    +
    +
    +

    import org.springframework.cloud.contract.stubrunner.StubConfiguration import org.springframework.cloud.contract.stubrunner.StubDownloader import org.springframework.cloud.contract.stubrunner.StubDownloaderBuilder import org.springframework.cloud.contract.stubrunner.StubRunnerOptions import org.springframework.core.io.DefaultResourceLoader import org.springframework.core.io.Resource -import org.springframework.core.io.support.PathMatchingResourcePatternResolver - -import java.nio.file.Files - -/** - * Poor man's version of taking stubs from classpath. It needs much more +import org.springframework.core.io.support.PathMatchingResourcePatternResolver

    +
    +
    +

    import java.nio.file.Files

    +
    +
    +

    /** + * Poor man’s version of taking stubs from classpath. It needs much more * love and attention to go to the main sources. * * @author Marcin Grzejszczak */ -class ClasspathStubProvider implements StubDownloaderBuilder { - - private static final int TEMP_DIR_ATTEMPTS = 10000 - - @Override - public StubDownloader build(StubRunnerOptions stubRunnerOptions) { - final StubConfiguration configuration = stubRunnerOptions.getDependencies().first() - PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver( - new DefaultResourceLoader()) - try { - String rootFolder = repoRoot(stubRunnerOptions) ?: "**/" + separatedArtifact(configuration) + "/**/*.json" - Resource[] resources = resolver.getResources(rootFolder) - final File tmp = createTempDir() - tmp.deleteOnExit() - // you'd have to write an impl to maintain the folder structure - // this is just for demo - resources.each { Resource resource -> - Files.copy(resource.getInputStream(), new File(tmp, resource.getFile().getName()).toPath()) - } - return new StubDownloader() { - @Override - public Map.Entry<StubConfiguration, File> downloadAndUnpackStubJar( - StubConfiguration stubConfiguration) { - return new AbstractMap.SimpleEntry(configuration, tmp) - } - } - } catch (IOException e) { - throw new IllegalStateException(e) +class ClasspathStubProvider implements StubDownloaderBuilder {

    +
    +
    +
    +
    private static final int TEMP_DIR_ATTEMPTS = 10000
    +
    +
    +
    +
    +
    @Override
+public StubDownloader build(StubRunnerOptions stubRunnerOptions) {
+	final StubConfiguration configuration = stubRunnerOptions.getDependencies().first()
+	PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(
+			new DefaultResourceLoader())
+	try {
+		String rootFolder = repoRoot(stubRunnerOptions) ?: "**/" + separatedArtifact(configuration) + "/**/*.json"
+		Resource[] resources = resolver.getResources(rootFolder)
+		final File tmp = createTempDir()
+		tmp.deleteOnExit()
+		// you'd have to write an impl to maintain the folder structure
+		// this is just for demo
+		resources.each { Resource resource ->
+			Files.copy(resource.getInputStream(), new File(tmp, resource.getFile().getName()).toPath())
 		}
-	}
-
-	private String repoRoot(StubRunnerOptions stubRunnerOptions) {
-		switch (stubRunnerOptions.stubRepositoryRoot) {
-			case { !it }:
-				return ""
-			case { String root -> root.endsWith("**/*.json") }:
-				return stubRunnerOptions.stubRepositoryRoot
-			default:
-				return stubRunnerOptions.stubRepositoryRoot + "/**/*.json"
+		return new StubDownloader() {
+			@Override
+			public Map.Entry<StubConfiguration, File> downloadAndUnpackStubJar(
+					StubConfiguration stubConfiguration) {
+				return new AbstractMap.SimpleEntry(configuration, tmp)
+			}
 		}
+	} catch (IOException e) {
+		throw new IllegalStateException(e)
 	}
-
-	private String separatedArtifact(StubConfiguration configuration) {
-		return configuration.getGroupId().replace(".", File.separator) +
-				File.separator + configuration.getArtifactId()
+}
    +
    +
    +
    +
    +
    private String repoRoot(StubRunnerOptions stubRunnerOptions) {
+	switch (stubRunnerOptions.stubRepositoryRoot) {
+		case { !it }:
+			return ""
+		case { String root -> root.endsWith("**/*.json") }:
+			return stubRunnerOptions.stubRepositoryRoot
+		default:
+			return stubRunnerOptions.stubRepositoryRoot + "/**/*.json"
 	}
-
-	// Taken from Guava
+}
    +
    +
    +
    +
    +
    private String separatedArtifact(StubConfiguration configuration) {
+	return configuration.getGroupId().replace(".", File.separator) +
+			File.separator + configuration.getArtifactId()
+}
    +
    +
    +
    +
    +
    	// Taken from Guava
 	private File createTempDir() {
 		File baseDir = new File(System.getProperty("java.io.tmpdir"))
 		String baseName = System.currentTimeMillis() + "-"
@@ -8515,71 +8532,40 @@ class ClasspathStubProvider implements StubDownloaderBuilder {
 				"Failed to create directory within " + TEMP_DIR_ATTEMPTS + " attempts (tried " + baseName + "0 to " + baseName + (
 						TEMP_DIR_ATTEMPTS - 1) + ")")
 	}
-}
    +}
    -
    -

    and just register it in your spring.factories file

    -
    -
    # Example of a custom Stub Downloader Provider
-org.springframework.cloud.contract.stubrunner.StubDownloaderBuilder=\
-org.springframework.cloud.contract.stubrunner.provider.moco.ClasspathStubProvider
    +
    and just register it in your `spring.factories` file
+
+[source]
    +

    Example of a custom Stub Downloader Provider

    -

    that way you’ll be able to pick a folder with the source of your stubs.

    +

    org.springframework.cloud.contract.stubrunner.StubDownloaderBuilder=\ +org.springframework.cloud.contract.stubrunner.provider.moco.ClasspathStubProvider

    -
    - - - - - -
    -
    Important
    -    		 -If you don’t provide any implementation then the default one - Aether based that will download stubs from a remote repo +
    +
    +
    that way you'll be able to pick a folder with the source of your stubs.
+
+IMPORTANT: If you don't provide any implementation then the default one - Aether based that will download stubs from a remote repo
 will be picked. If you provide more than one then the first one on the list will be picked.
-
    -
    -
    - -
    -

    Links

    -
    -

    Here you can find interesting links related to Spring Cloud Contract Verifier:

    -
    -
    - -
    -
    + +=== Links + +Here you can find interesting links related to Spring Cloud Contract Verifier: + +- https://github.com/spring-cloud/spring-cloud-contract/[Spring Cloud Contract Github Repository] +- https://github.com/spring-cloud-samples/spring-cloud-contract-samples/[Spring Cloud Contract Samples] +- https://cloud.spring.io/spring-cloud-contract/spring-cloud-contract.html[Spring Cloud Contract Documentation] +- https://cloud.spring.io/spring-cloud-contract/spring-cloud-contract.html/deprecated[Accurest Legacy Documentation] +- https://cloud.spring.io/spring-cloud-contract/spring-cloud-contract.html/#spring-cloud-contract-stub-runner[Spring Cloud Contract Stub Runner Documentation] +- https://cloud.spring.io/spring-cloud-contract/spring-cloud-contract.html/#stub-runner-for-messaging[Spring Cloud Contract Stub Runner Messaging Documentation] +- https://gitter.im/spring-cloud/spring-cloud-contract[Spring Cloud Contract Gitter] +- https://cloud.spring.io/spring-cloud-contract/spring-cloud-contract-maven-plugin/[Spring Cloud Contract Maven Plugin]