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Utility classes for long running applications that terminate cleanly upon SIGTERM

# Leiningen plugin to verify a provider [version 2.2.14+, 3.0.3+] Leiningen plugin for verifying pacts against a provider. The plugin provides a `pact-verify` task which will verify all configured pacts against your provider. ## To Use It ### 1. Add the plugin to your project plugins, preferably in it's own profile. ```clojure :profiles { :pact { :plugins [[au.com.dius/pact-jvm-provider-lein_2.11 "3.2.11" :exclusions [commons-logging]]] :dependencies [[ch.qos.logback/logback-core "1.1.3"] [ch.qos.logback/logback-classic "1.1.3"] [org.apache.httpcomponents/httpclient "4.4.1"]] }}} ``` ### 2. Define the pacts between your consumers and providers You define all the providers and consumers within the `:pact` configuration element of your project. ```clojure :pact { :service-providers { ; You can define as many as you need, but each must have a unique name :provider1 { ; All the provider properties are optional, and have sensible defaults (shown below) :protocol "http" :host "localhost" :port 8080 :path "/" :has-pact-with { ; Again, you can define as many consumers for each provider as you need, but each must have a unique name :consumer1 { ; pact file can be either a path or an URL :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ### 3. Execute `lein with-profile pact pact-verify` You will have to have your provider running for this to pass. ## Enabling insecure SSL For providers that are running on SSL with self-signed certificates, you need to enable insecure SSL mode by setting `:insecure true` on the provider. ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :insecure true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ## Specifying a custom trust store For environments that are running their own certificate chains: ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :trust-store "relative/path/to/trustStore.jks" :trust-store-password "changeme" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` `:trust-store` is relative to the current working (build) directory. `:trust-store-password` defaults to `changeit`. NOTE: The hostname will still be verified against the certificate. ## Modifying the requests before they are sent Sometimes you may need to add things to the requests that can't be persisted in a pact file. Examples of these would be authentication tokens, which have a small life span. The Leiningen plugin provides a request filter that can be set to an anonymous function on the provider that will be called before the request is made. This function will receive the HttpRequest object as a parameter. ```clojure :pact { :service-providers { :provider1 { ; function that adds an Authorization header to each request :request-filter #(.addHeader % "Authorization" "oauth-token eyJhbGciOiJSUzI1NiIsIm...") :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` __*Important Note:*__ You should only use this feature for things that can not be persisted in the pact file. By modifying the request, you are potentially modifying the contract from the consumer tests! ## Modifying the HTTP Client Used The default HTTP client is used for all requests to providers (created with a call to `HttpClients.createDefault()`). This can be changed by specifying a function assigned to `:create-client` on the provider that returns a `CloseableHttpClient`. The function will receive the provider info as a parameter. ## Turning off URL decoding of the paths in the pact file [version 3.3.3+] By default the paths loaded from the pact file will be decoded before the request is sent to the provider. To turn this behaviour off, set the system property `pact.verifier.disableUrlPathDecoding` to `true`. __*Important Note:*__ If you turn off the url path decoding, you need to ensure that the paths in the pact files are correctly encoded. The verifier will not be able to make a request with an invalid encoded path. ## Plugin Properties The following plugin options can be specified on the command line: |Property|Description| |--------|-----------| |:pact.showStacktrace|This turns on stacktrace printing for each request. It can help with diagnosing network errors| |:pact.showFullDiff|This turns on displaying the full diff of the expected versus actual bodies [version 3.3.6+]| |:pact.filter.consumers|Comma seperated list of consumer names to verify| |:pact.filter.description|Only verify interactions whose description match the provided regular expression| |:pact.filter.providerState|Only verify interactions whose provider state match the provided regular expression. An empty string matches interactions that have no state| |:pact.verifier.publishResults|Publishing of verification results will be skipped unless this property is set to 'true' [version 3.5.18+]| |:pact.matching.wildcard|Enables matching of map values ignoring the keys when this property is set to 'true'| Example, to run verification only for a particular consumer: ``` $ lein with-profile pact pact-verify :pact.filter.consumers=:consumer2 ``` ## Provider States For each provider you can specify a state change URL to use to switch the state of the provider. This URL will receive the `providerState` description from the pact file before each interaction via a POST. The `:state-change-uses-body` controls if the state is passed in the request body or as a query parameter. These values can be set at the provider level, or for a specific consumer. Consumer values take precedent if both are given. ```clojure :pact { :service-providers { :provider1 { :state-change-url "http://localhost:8080/tasks/pactStateChange" :state-change-uses-body false ; defaults to true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` If the `:state-change-uses-body` is not specified, or is set to true, then the provider state description will be sent as JSON in the body of the request. If it is set to false, it will passed as a query parameter. As for normal requests (see Modifying the requests before they are sent), a state change request can be modified before it is sent. Set `:state-change-request-filter` to an anonymous function on the provider that will be called before the request is made. #### Returning values that can be injected (3.6.11+) You can have values from the provider state callbacks be injected into most places (paths, query parameters, headers, bodies, etc.). This works by using the V3 spec generators with provider state callbacks that return values. One example of where this would be useful is API calls that require an ID which would be auto-generated by the database on the provider side, so there is no way to know what the ID would be beforehand. There are methods on the consumer DSLs that can provider an expression that contains variables (like '/api/user/${id}' for the path). The provider state callback can then return a map for values, and the `id` attribute from the map will be expanded in the expression. For URL callbacks, the values need to be returned as JSON in the response body. ## Filtering the interactions that are verified You can filter the interactions that are run using three properties: `:pact.filter.consumers`, `:pact.filter.description` and `:pact.filter.providerState`. Adding `:pact.filter.consumers=:consumer1,:consumer2` to the command line will only run the pact files for those consumers (consumer1 and consumer2). Adding `:pact.filter.description=a request for payment.*` will only run those interactions whose descriptions start with 'a request for payment'. `:pact.filter.providerState=.*payment` will match any interaction that has a provider state that ends with payment, and `:pact.filter.providerState=` will match any interaction that does not have a provider state. ## Starting and shutting down your provider For the pact verification to run, the provider needs to be running. Leiningen provides a `do` task that can chain tasks together. So, by creating a `start-app` and `terminate-app` alias, you could so something like: $ lein with-profile pact do start-app, pact-verify, terminate-app However, if the pact verification fails the build will abort without running the `terminate-app` task. To have the start and terminate tasks always run regardless of the state of the verification, you can assign them to `:start-provider-task` and `:terminate-provider-task` on the provider. ```clojure :aliases {"start-app" ^{:doc "Starts the app"} ["tasks to start app ..."] ; insert tasks to start the app here "terminate-app" ^{:doc "Kills the app"} ["tasks to terminate app ..."] ; insert tasks to stop the app here } :pact { :service-providers { :provider1 { :start-provider-task "start-app" :terminate-provider-task "terminate-app" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` Then you can just run: $ lein with-profile pact pact-verify and the `start-app` and `terminate-app` tasks will run before and after the provider verification. ## Specifying the provider hostname at runtime [3.0.4+] If you need to calculate the provider hostname at runtime (for instance it is run as a new docker container or AWS instance), you can give an anonymous function as the provider host that returns the host name. The function will receive the provider information as a parameter. ```clojure :pact { :service-providers { :provider1 { :host #(calculate-host-name %) :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ```

# Leiningen plugin to verify a provider Leiningen plugin for verifying pacts against a provider. The plugin provides a `pact-verify` task which will verify all configured pacts against your provider. ## To Use It ### 1. Add the plugin to your project plugins, preferably in it's own profile. ```clojure :profiles { :pact { :plugins [[au.com.dius/pact-jvm-provider-lein "4.0.0" :exclusions [commons-logging]]] :dependencies [[ch.qos.logback/logback-core "1.1.3"] [ch.qos.logback/logback-classic "1.1.3"] [org.apache.httpcomponents/httpclient "4.4.1"]] }}} ``` ### 2. Define the pacts between your consumers and providers You define all the providers and consumers within the `:pact` configuration element of your project. ```clojure :pact { :service-providers { ; You can define as many as you need, but each must have a unique name :provider1 { ; All the provider properties are optional, and have sensible defaults (shown below) :protocol "http" :host "localhost" :port 8080 :path "/" :has-pact-with { ; Again, you can define as many consumers for each provider as you need, but each must have a unique name :consumer1 { ; pact file can be either a path or an URL :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ### 3. Execute `lein with-profile pact pact-verify` You will have to have your provider running for this to pass. ## Enabling insecure SSL For providers that are running on SSL with self-signed certificates, you need to enable insecure SSL mode by setting `:insecure true` on the provider. ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :insecure true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ## Specifying a custom trust store For environments that are running their own certificate chains: ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :trust-store "relative/path/to/trustStore.jks" :trust-store-password "changeme" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` `:trust-store` is relative to the current working (build) directory. `:trust-store-password` defaults to `changeit`. NOTE: The hostname will still be verified against the certificate. ## Modifying the requests before they are sent Sometimes you may need to add things to the requests that can't be persisted in a pact file. Examples of these would be authentication tokens, which have a small life span. The Leiningen plugin provides a request filter that can be set to an anonymous function on the provider that will be called before the request is made. This function will receive the HttpRequest object as a parameter. ```clojure :pact { :service-providers { :provider1 { ; function that adds an Authorization header to each request :request-filter #(.addHeader % "Authorization" "oauth-token eyJhbGciOiJSUzI1NiIsIm...") :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` __*Important Note:*__ You should only use this feature for things that can not be persisted in the pact file. By modifying the request, you are potentially modifying the contract from the consumer tests! ## Modifying the HTTP Client Used The default HTTP client is used for all requests to providers (created with a call to `HttpClients.createDefault()`). This can be changed by specifying a function assigned to `:create-client` on the provider that returns a `CloseableHttpClient`. The function will receive the provider info as a parameter. ## Turning off URL decoding of the paths in the pact file By default the paths loaded from the pact file will be decoded before the request is sent to the provider. To turn this behaviour off, set the system property `pact.verifier.disableUrlPathDecoding` to `true`. __*Important Note:*__ If you turn off the url path decoding, you need to ensure that the paths in the pact files are correctly encoded. The verifier will not be able to make a request with an invalid encoded path. ## Plugin Properties The following plugin options can be specified on the command line: |Property|Description| |--------|-----------| |:pact.showStacktrace|This turns on stacktrace printing for each request. It can help with diagnosing network errors| |:pact.showFullDiff|This turns on displaying the full diff of the expected versus actual bodies [version 3.3.6+]| |:pact.filter.consumers|Comma seperated list of consumer names to verify| |:pact.filter.description|Only verify interactions whose description match the provided regular expression| |:pact.filter.providerState|Only verify interactions whose provider state match the provided regular expression. An empty string matches interactions that have no state| |:pact.verifier.publishResults|Publishing of verification results will be skipped unless this property is set to 'true' [version 3.5.18+]| |:pact.matching.wildcard|Enables matching of map values ignoring the keys when this property is set to 'true'| Example, to run verification only for a particular consumer: ``` $ lein with-profile pact pact-verify :pact.filter.consumers=consumer2 ``` ## Provider States For each provider you can specify a state change URL to use to switch the state of the provider. This URL will receive the `providerState` description from the pact file before each interaction via a POST. The `:state-change-uses-body` controls if the state is passed in the request body or as a query parameter. These values can be set at the provider level, or for a specific consumer. Consumer values take precedent if both are given. ```clojure :pact { :service-providers { :provider1 { :state-change-url "http://localhost:8080/tasks/pactStateChange" :state-change-uses-body false ; defaults to true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` If the `:state-change-uses-body` is not specified, or is set to true, then the provider state description will be sent as JSON in the body of the request. If it is set to false, it will passed as a query parameter. As for normal requests (see Modifying the requests before they are sent), a state change request can be modified before it is sent. Set `:state-change-request-filter` to an anonymous function on the provider that will be called before the request is made. #### Returning values that can be injected (3.6.11+) You can have values from the provider state callbacks be injected into most places (paths, query parameters, headers, bodies, etc.). This works by using the V3 spec generators with provider state callbacks that return values. One example of where this would be useful is API calls that require an ID which would be auto-generated by the database on the provider side, so there is no way to know what the ID would be beforehand. There are methods on the consumer DSLs that can provider an expression that contains variables (like '/api/user/${id}' for the path). The provider state callback can then return a map for values, and the `id` attribute from the map will be expanded in the expression. For URL callbacks, the values need to be returned as JSON in the response body. ## Filtering the interactions that are verified You can filter the interactions that are run using three properties: `:pact.filter.consumers`, `:pact.filter.description` and `:pact.filter.providerState`. Adding `:pact.filter.consumers=consumer1,consumer2` to the command line will only run the pact files for those consumers (consumer1 and consumer2). Adding `:pact.filter.description=a request for payment.*` will only run those interactions whose descriptions start with 'a request for payment'. `:pact.filter.providerState=.*payment` will match any interaction that has a provider state that ends with payment, and `:pact.filter.providerState=` will match any interaction that does not have a provider state. ## Starting and shutting down your provider For the pact verification to run, the provider needs to be running. Leiningen provides a `do` task that can chain tasks together. So, by creating a `start-app` and `terminate-app` alias, you could so something like: $ lein with-profile pact do start-app, pact-verify, terminate-app However, if the pact verification fails the build will abort without running the `terminate-app` task. To have the start and terminate tasks always run regardless of the state of the verification, you can assign them to `:start-provider-task` and `:terminate-provider-task` on the provider. ```clojure :aliases {"start-app" ^{:doc "Starts the app"} ["tasks to start app ..."] ; insert tasks to start the app here "terminate-app" ^{:doc "Kills the app"} ["tasks to terminate app ..."] ; insert tasks to stop the app here } :pact { :service-providers { :provider1 { :start-provider-task "start-app" :terminate-provider-task "terminate-app" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` Then you can just run: $ lein with-profile pact pact-verify and the `start-app` and `terminate-app` tasks will run before and after the provider verification. ## Specifying the provider hostname at runtime If you need to calculate the provider hostname at runtime (for instance it is run as a new docker container or AWS instance), you can give an anonymous function as the provider host that returns the host name. The function will receive the provider information as a parameter. ```clojure :pact { :service-providers { :provider1 { :host #(calculate-host-name %) :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ```

# Leiningen plugin to verify a provider [version 2.2.14+, 3.0.3+] Leiningen plugin for verifying pacts against a provider. The plugin provides a `pact-verify` task which will verify all configured pacts against your provider. ## To Use It ### 1. Add the plugin to your project plugins, preferably in it's own profile. ```clojure :profiles { :pact { :plugins [[au.com.dius/pact-jvm-provider-lein_2.11 "3.2.11" :exclusions [commons-logging]]] :dependencies [[ch.qos.logback/logback-core "1.1.3"] [ch.qos.logback/logback-classic "1.1.3"] [org.apache.httpcomponents/httpclient "4.4.1"]] }}} ``` ### 2. Define the pacts between your consumers and providers You define all the providers and consumers within the `:pact` configuration element of your project. ```clojure :pact { :service-providers { ; You can define as many as you need, but each must have a unique name :provider1 { ; All the provider properties are optional, and have sensible defaults (shown below) :protocol "http" :host "localhost" :port 8080 :path "/" :has-pact-with { ; Again, you can define as many consumers for each provider as you need, but each must have a unique name :consumer1 { ; pact file can be either a path or an URL :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ### 3. Execute `lein with-profile pact pact-verify` You will have to have your provider running for this to pass. ## Enabling insecure SSL For providers that are running on SSL with self-signed certificates, you need to enable insecure SSL mode by setting `:insecure true` on the provider. ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :insecure true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ## Specifying a custom trust store For environments that are running their own certificate chains: ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :trust-store "relative/path/to/trustStore.jks" :trust-store-password "changeme" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` `:trust-store` is relative to the current working (build) directory. `:trust-store-password` defaults to `changeit`. NOTE: The hostname will still be verified against the certificate. ## Modifying the requests before they are sent Sometimes you may need to add things to the requests that can't be persisted in a pact file. Examples of these would be authentication tokens, which have a small life span. The Leiningen plugin provides a request filter that can be set to an anonymous function on the provider that will be called before the request is made. This function will receive the HttpRequest object as a parameter. ```clojure :pact { :service-providers { :provider1 { ; function that adds an Authorization header to each request :request-filter #(.addHeader % "Authorization" "oauth-token eyJhbGciOiJSUzI1NiIsIm...") :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` __*Important Note:*__ You should only use this feature for things that can not be persisted in the pact file. By modifying the request, you are potentially modifying the contract from the consumer tests! ## Modifying the HTTP Client Used The default HTTP client is used for all requests to providers (created with a call to `HttpClients.createDefault()`). This can be changed by specifying a function assigned to `:create-client` on the provider that returns a `CloseableHttpClient`. The function will receive the provider info as a parameter. ## Turning off URL decoding of the paths in the pact file [version 3.3.3+] By default the paths loaded from the pact file will be decoded before the request is sent to the provider. To turn this behaviour off, set the system property `pact.verifier.disableUrlPathDecoding` to `true`. __*Important Note:*__ If you turn off the url path decoding, you need to ensure that the paths in the pact files are correctly encoded. The verifier will not be able to make a request with an invalid encoded path. ## Plugin Properties The following plugin options can be specified on the command line: |Property|Description| |--------|-----------| |:pact.showStacktrace|This turns on stacktrace printing for each request. It can help with diagnosing network errors| |:pact.showFullDiff|This turns on displaying the full diff of the expected versus actual bodies [version 3.3.6+]| |:pact.filter.consumers|Comma seperated list of consumer names to verify| |:pact.filter.description|Only verify interactions whose description match the provided regular expression| |:pact.filter.providerState|Only verify interactions whose provider state match the provided regular expression. An empty string matches interactions that have no state| Example, to run verification only for a particular consumer: ``` $ lein with-profile pact pact-verify :pact.filter.consumers=consumer2 ``` ## Provider States For each provider you can specify a state change URL to use to switch the state of the provider. This URL will receive the `providerState` description from the pact file before each interaction via a POST. The `:state-change-uses-body` controls if the state is passed in the request body or as a query parameter. These values can be set at the provider level, or for a specific consumer. Consumer values take precedent if both are given. ```clojure :pact { :service-providers { :provider1 { :state-change-url "http://localhost:8080/tasks/pactStateChange" :state-change-uses-body false ; defaults to true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` If the `:state-change-uses-body` is not specified, or is set to true, then the provider state description will be sent as JSON in the body of the request. If it is set to false, it will passed as a query parameter. As for normal requests (see Modifying the requests before they are sent), a state change request can be modified before it is sent. Set `:state-change-request-filter` to an anonymous function on the provider that will be called before the request is made. ## Filtering the interactions that are verified You can filter the interactions that are run using three properties: `:pact.filter.consumers`, `:pact.filter.description` and `:pact.filter.providerState`. Adding `:pact.filter.consumers=consumer1,consumer2` to the command line will only run the pact files for those consumers (consumer1 and consumer2). Adding `:pact.filter.description=a request for payment.*` will only run those interactions whose descriptions start with 'a request for payment'. `:pact.filter.providerState=.*payment` will match any interaction that has a provider state that ends with payment, and `:pact.filter.providerState=` will match any interaction that does not have a provider state. ## Starting and shutting down your provider For the pact verification to run, the provider needs to be running. Leiningen provides a `do` task that can chain tasks together. So, by creating a `start-app` and `terminate-app` alias, you could so something like: $ lein with-profile pact do start-app, pact-verify, terminate-app However, if the pact verification fails the build will abort without running the `terminate-app` task. To have the start and terminate tasks always run regardless of the state of the verification, you can assign them to `:start-provider-task` and `:terminate-provider-task` on the provider. ```clojure :aliases {"start-app" ^{:doc "Starts the app"} ["tasks to start app ..."] ; insert tasks to start the app here "terminate-app" ^{:doc "Kills the app"} ["tasks to terminate app ..."] ; insert tasks to stop the app here } :pact { :service-providers { :provider1 { :start-provider-task "start-app" :terminate-provider-task "terminate-app" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` Then you can just run: $ lein with-profile pact pact-verify and the `start-app` and `terminate-app` tasks will run before and after the provider verification. ## Specifying the provider hostname at runtime [3.0.4+] If you need to calculate the provider hostname at runtime (for instance it is run as a new docker container or AWS instance), you can give an anonymous function as the provider host that returns the host name. The function will receive the provider information as a parameter. ```clojure :pact { :service-providers { :provider1 { :host #(calculate-host-name %) :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ```

# Leiningen plugin to verify a provider [version 2.2.14+, 3.0.3+] Leiningen plugin for verifying pacts against a provider. The plugin provides a `pact-verify` task which will verify all configured pacts against your provider. ## To Use It ### 1. Add the plugin to your project plugins, preferably in it's own profile. ```clojure :profiles { :pact { :plugins [[au.com.dius/pact-jvm-provider-lein_2.11 "3.0.3" :exclusions [commons-logging]]] :dependencies [[ch.qos.logback/logback-core "1.1.3"] [ch.qos.logback/logback-classic "1.1.3"] [org.apache.httpcomponents/httpclient "4.4.1"]] }}} ``` ### 2. Define the pacts between your consumers and providers You define all the providers and consumers within the `:pact` configuration element of your project. ```clojure :pact { :service-providers { ; You can define as many as you need, but each must have a unique name :provider1 { ; All the provider properties are optional, and have sensible defaults (shown below) :protocol "http" :host "localhost" :port 8080 :path "/" :has-pact-with { ; Again, you can define as many consumers for each provider as you need, but each must have a unique name :consumer1 { ; pact file can be either a path or an URL :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ### 3. Execute `lein with-profile pact pact-verify` You will have to have your provider running for this to pass. ## Enabling insecure SSL For providers that are running on SSL with self-signed certificates, you need to enable insecure SSL mode by setting `:insecure true` on the provider. ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :insecure true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` ## Specifying a custom trust store For environments that are running their own certificate chains: ```clojure :pact { :service-providers { :provider1 { :protocol "https" :host "localhost" :port 8443 :trust-store "relative/path/to/trustStore.jks" :trust-store-password "changeme" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` `:trust-store` is relative to the current working (build) directory. `:trust-store-password` defaults to `changeit`. NOTE: The hostname will still be verified against the certificate. ## Modifying the requests before they are sent Sometimes you may need to add things to the requests that can't be persisted in a pact file. Examples of these would be authentication tokens, which have a small life span. The Leiningen plugin provides a request filter that can be set to an anonymous function on the provider that will be called before the request is made. This function will receive the HttpRequest object as a parameter. ```clojure :pact { :service-providers { :provider1 { ; function that adds an Authorization header to each request :request-filter #(.addHeader % "Authorization" "oauth-token eyJhbGciOiJSUzI1NiIsIm...") :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` __*Important Note:*__ You should only use this feature for things that can not be persisted in the pact file. By modifying the request, you are potentially modifying the contract from the consumer tests! ## Modifying the HTTP Client Used The default HTTP client is used for all requests to providers (created with a call to `HttpClients.createDefault()`). This can be changed by specifying a function assigned to `:create-client` on the provider that returns a `CloseableHttpClient`. The function will receive the provider info as a parameter. ## Plugin Properties The following plugin options can be specified on the command line: |Property|Description| |--------|-----------| |:pact.showStacktrace|This turns on stacktrace printing for each request. It can help with diagnosing network errors| |:pact.filter.consumers|Comma seperated list of consumer names to verify| |:pact.filter.description|Only verify interactions whose description match the provided regular expression| |:pact.filter.providerState|Only verify interactions whose provider state match the provided regular expression. An empty string matches interactions that have no state| Example, to run verification only for a particular consumer: ``` $ lein with-profile pact pact-verify :pact.filter.consumers=consumer2 ``` ## Provider States For each provider you can specify a state change URL to use to switch the state of the provider. This URL will receive the `providerState` description from the pact file before each interaction via a POST. The `:state-change-uses-body` controls if the state is passed in the request body or as a query parameter. These values can be set at the provider level, or for a specific consumer. Consumer values take precedent if both are given. ```clojure :pact { :service-providers { :provider1 { :state-change-url "http://localhost:8080/tasks/pactStateChange" :state-change-uses-body false ; defaults to true :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` If the `:state-change-uses-body` is not specified, or is set to true, then the provider state description will be sent as JSON in the body of the request. If it is set to false, it will passed as a query parameter. As for normal requests (see Modifying the requests before they are sent), a state change request can be modified before it is sent. Set `:state-change-request-filter` to an anonymous function on the provider that will be called before the request is made. ## Filtering the interactions that are verified You can filter the interactions that are run using three properties: `:pact.filter.consumers`, `:pact.filter.description` and `:pact.filter.providerState`. Adding `:pact.filter.consumers=consumer1,consumer2` to the command line will only run the pact files for those consumers (consumer1 and consumer2). Adding `:pact.filter.description=a request for payment.*` will only run those interactions whose descriptions start with 'a request for payment'. `:pact.filter.providerState=.*payment` will match any interaction that has a provider state that ends with payment, and `:pact.filter.providerState=` will match any interaction that does not have a provider state. ## Starting and shutting down your provider For the pact verification to run, the provider needs to be running. Leiningen provides a `do` task that can chain tasks together. So, by creating a `start-app` and `terminate-app` alias, you could so something like: $ lein with-profile pact do start-app, pact-verify, terminate-app However, if the pact verification fails the build will abort without running the `terminate-app` task. To have the start and terminate tasks always run regardless of the state of the verification, you can assign them to `:start-provider-task` and `:terminate-provider-task` on the provider. ```clojure :aliases {"start-app" ^{:doc "Starts the app"} ["tasks to start app ..."] ; insert tasks to start the app here "terminate-app" ^{:doc "Kills the app"} ["tasks to terminate app ..."] ; insert tasks to stop the app here } :pact { :service-providers { :provider1 { :start-provider-task "start-app" :terminate-provider-task "terminate-app" :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ``` Then you can just run: $ lein with-profile pact pact-verify and the `start-app` and `terminate-app` tasks will run before and after the provider verification. ## Specifying the provider hostname at runtime [3.0.4+] If you need to calculate the provider hostname at runtime (for instance it is run as a new docker container or AWS instance), you can give an anonymous function as the provider host that returns the host name. The function will receive the provider information as a parameter. ```clojure :pact { :service-providers { :provider1 { :host #(calculate-host-name %) :has-pact-with { :consumer1 { :pact-file "path/to/provider1-consumer1-pact.json" } } } } } ```

pact-jvm-provider-gradle ======================== Gradle plugin for verifying pacts against a provider. The Gradle plugin creates a task `pactVerify` to your build which will verify all configured pacts against your provider. ## To Use It ### For Gradle versions prior to 2.1 #### 1.1. Add the pact-jvm-provider-gradle jar file to your build script class path: ```groovy buildscript { repositories { mavenCentral() } dependencies { classpath 'au.com.dius:pact-jvm-provider-gradle_2.10:2.2.1' } } ``` #### 1.2. Apply the pact plugin ```groovy apply plugin: 'au.com.dius.pact' ``` ### For Gradle versions 2.1+ ```groovy plugins { id "au.com.dius.pact" version "2.2.1" } ``` ### 2. Define the pacts between your consumers and providers ```groovy pact { serviceProviders { // You can define as many as you need, but each must have a unique name provider1 { // All the provider properties are optional, and have sensible defaults (shown below) protocol = 'http' host = 'localhost' port = 8080 path = '/' // Again, you can define as many consumers for each provider as you need, but each must have a unique name hasPactWith('consumer1') { // currently supports a file path using file() or a URL using url() pactFile = file('path/to/provider1-consumer1-pact.json') } // Or if you have many pact files in a directory hasPactsWith('manyConsumers') { // Will define a consumer for each pact file in the directory. // Consumer name is read from contents of pact file pactFileLocation = file('path/to/pacts') } } } } ``` ### 3. Execute `gradle pactVerify` ## Specifying the provider hostname at runtime If you need to calculate the provider hostname at runtime, you can give a Closure as the provider host. ```groovy pact { serviceProviders { provider1 { host = { lookupHostName() } hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') } } } } ``` ## Starting and shutting down your provider If you need to start-up or shutdown your provider, you can define a start and terminate task for each provider. You could use the jetty tasks here if you provider is built as a WAR file. ```groovy // This will be called before the provider task task('startTheApp') << { // start up your provider here } // This will be called after the provider task task('killTheApp') << { // kill your provider here } pact { serviceProviders { provider1 { startProviderTask = startTheApp terminateProviderTask = killTheApp hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') } } } } ``` Following typical Gradle behaviour, you can set the provider task properties to the actual tasks, or to the task names as a string (for the case when they haven't been defined yet). ## Enabling insecure SSL [version 2.2.8+] For providers that are running on SSL with self-signed certificates, you need to enable insecure SSL mode by setting `insecure = true` on the provider. ```groovy pact { serviceProviders { provider1 { insecure = true // allow SSL with a self-signed cert hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') } } } } ``` ## Specifying a custom trust store [version 2.2.8+] For environments that are running their own certificate chains: ```groovy pact { serviceProviders { provider1 { trustStore = new File('relative/path/to/trustStore.jks') trustStorePassword = 'changeit' hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') } } } } `trustStore` is either relative to the current working (build) directory. `trustStorePassword` defaults to `changeit`. NOTE: The hostname will still be verified against the certificate. ## Modifying the HTTP Client Used [version 2.2.4+] The default HTTP client is used for all requests to providers (created with a call to `HttpClients.createDefault()`). This can be changed by specifying a closure assigned to createClient on the provider that returns a CloseableHttpClient. For example: ```groovy pact { serviceProviders { provider1 { createClient = { provider -> // This will enable the client to accept self-signed certificates HttpClients.custom().setSSLHostnameVerifier(new NoopHostnameVerifier()) .setSslcontext(new SSLContextBuilder().loadTrustMaterial(null, { x509Certificates, s -> true }) .build()) .build() } hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') } } } } ``` ## Modifying the requests before they are sent **NOTE on breaking change: Version 2.1.8+ uses Apache HttpClient instead of HttpBuilder so the closure will receive a HttpRequest object instead of a request Map.** Sometimes you may need to add things to the requests that can't be persisted in a pact file. Examples of these would be authentication tokens, which have a small life span. The Pact Gradle plugin provides a request filter that can be set to a closure on the provider that will be called before the request is made. This closure will receive the HttpRequest prior to it being executed. ```groovy pact { serviceProviders { provider1 { requestFilter = { req -> // Add an authorization header to each request req.addHeader('Authorization', 'OAUTH eyJhbGciOiJSUzI1NiIsImN0eSI6ImFw...') } hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') } } } } ``` ## Project Properties The following project properties can be specified with `-Pproperty=value` on the command line: |Property|Description| |--------|-----------| |pact.showStacktrace|This turns on stacktrace printing for each request. It can help with diagnosing network errors| |pact.filter.consumers|Comma seperated list of consumer names to verify| |pact.filter.description|Only verify interactions whose description match the provided regular expression| |pact.filter.providerState|Only verify interactions whose provider state match the provided regular expression. An empty string matches interactions that have no state| ## Provider States For a description of what provider states are, see the wiki in the Ruby project: https://github.com/realestate-com-au/pact/wiki/Provider-states ### Using a state change URL For each provider you can specify a state change URL to use to switch the state of the provider. This URL will receive the providerState description from the pact file before each interaction via a POST. As for normal requests, a request filter (`stateChangeRequestFilter`) can also be set to manipulate the request before it is sent. ```groovy pact { serviceProviders { provider1 { hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') stateChange = url('http://localhost:8001/tasks/pactStateChange') stateChangeUsesBody = false // defaults to true stateChangeRequestFilter = { req -> // Add an authorization header to each request req.addHeader('Authorization', 'OAUTH eyJhbGciOiJSUzI1NiIsImN0eSI6ImFw...') } } // or hasPactsWith('consumers') { pactFileLocation = file('path/to/pacts') stateChange = url('http://localhost:8001/tasks/pactStateChange') stateChangeUsesBody = false // defaults to true } } } } ``` If the `stateChangeUsesBody` is not specified, or is set to true, then the provider state description will be sent as JSON in the body of the request. If it is set to false, it will passed as a query parameter. ### Using a Closure [version 2.2.2+] You can set a closure to be called before each verification with a defined provider state. The closure will be called with the state description from the pact file. ```groovy pact { serviceProviders { provider1 { hasPactWith('consumer1') { pactFile = file('path/to/provider1-consumer1-pact.json') // Load a fixture file based on the provider state and then setup some database // data. Does not require a state change request so returns false stateChange = { providerState -> def fixture = loadFixtuerForProviderState(providerState) setupDatabase(fixture) } } } } } ``` ## Filtering the interactions that are verified You can filter the interactions that are run using three project properties: `pact.filter.consumers`, `pact.filter.description` and `pact.filter.providerState`. Adding `-Ppact.filter.consumers=consumer1,consumer2` to the command line will only run the pact files for those consumers (consumer1 and consumer2). Adding `-Ppact.filter.description=a request for payment.*` will only run those interactions whose descriptions start with 'a request for payment'. `-Ppact.filter.providerState=.*payment` will match any interaction that has a provider state that ends with payment, and `-Ppact.filter.providerState=` will match any interaction that does not have a provider state. ## Verifying pact files from a pact broker [version 3.1.1+/2.3.1+] You can setup your build to validate against the pacts stored in a pact broker. The pact gradle plugin will query the pact broker for all consumers that have a pact with the provider based on its name. For example: ```groovy pact { serviceProviders { provider1 { hasPactsFromPactBroker('http://pact-broker:5000/') } } } ``` This will verify all pacts found in the pact broker where the provider name is 'provider1'. If you need to set any values on the consumers from the pact broker, you can add a Closure to configure them. ```groovy pact { serviceProviders { provider1 { hasPactsFromPactBroker('http://pact-broker:5000/') { consumer -> stateChange = { providerState -> /* state change code here */ true } } } } } ``` **NOTE: Currently the pacts are fetched from the broker during the configuration phase of the build. This means that if the broker is not available, you will not be able to run any Gradle tasks.** This should be fixed in a forth coming release. In the mean time, to only load the pacts when running the validate task, you can do something like: ```groovy pact { serviceProviders { provider1 { // Only load the pacts from the broker if the start tasks from the command line include pactVerify if ('pactVerify' in gradle.startParameter.taskNames) { hasPactsFromPactBroker('http://pact-broker:5000/') { consumer -> stateChange = { providerState -> /* state change code here */ true } } } } } } ``` # Publishing pact files to a pact broker [version 2.2.7+] The pact gradle plugin provides a `pactPublish` task that can publish all pact files in a directory to a pact broker. To use it, you need to add a publish configuration to the pact configuration that defines the directory where the pact files are and the URL to the pact broker. For example: ```groovy pact { publish { pactDirectory = '/pact/dir' // defaults to $buildDir/pacts pactBrokerUrl = 'http://pactbroker:1234' } } ``` _NOTE:_ The pact broker requires a version for all published pacts. The `pactPublish` task will use the version of the gradle project. Make sure you have set one otherwise the broker will reject the pact files. # Verifying a message provider [version 2.2.12+] The Gradle plugin has been updated to allow invoking test methods that can return the message contents from a message producer. To use it, set the way to invoke the verification to `ANNOTATED_METHOD`. This will allow the pact verification task to scan for test methods that return the message contents. Add something like the following to your gradle build file: ```groovy pact { serviceProviders { messageProvider { verificationType = 'ANNOTATED_METHOD' packagesToScan = ['au.com.example.messageprovider.*'] // This optional, but leaving it out will result in the entire // test classpath being scanned hasPactWith('messageConsumer') { pactFile = url('url/to/messagepact.json') } } } } ``` Now when the `pactVerify` task is run, will look for methods annotated with `@PactVerifyProvider` in the test classpath that have a matching description to what is in the pact file. ```groovy class ConfirmationKafkaMessageBuilderTest { @PactVerifyProvider('an order confirmation message') String verifyMessageForOrder() { Order order = new Order() order.setId(10000004) order.setExchange('ASX') order.setSecurityCode('CBA') order.setPrice(BigDecimal.TEN) order.setUnits(15) order.setGst(new BigDecimal('15.0')) odrer.setFees(BigDecimal.TEN) def message = new ConfirmationKafkaMessageBuilder() .withOrder(order) .build() JsonOutput.toJson(message) } } ``` It will then validate that the returned contents matches the contents for the message in the pact file. ## Publishing to the Gradle Community Portal To publish the plugin to the community portal: $ ./gradlew :pact-jvm-provider-gradle_2.11:publishPlugins