Allow the gradle plugin to accept a closure to modify the request bef…

…ore sending it

pact-jvm-provider-gradle/README.md

@@ -99,6 +99,36 @@ pact {
 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).
 
+## 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 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 a Map with
+all the requests attributes defined on it.
+
+```groovy
+pact {
+
+    serviceProviders {
+
+        provider1 {
+
+            requestFilter = { req ->
+                // Add an authorization header to each request
+                req.headers['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:

pact-jvm-provider-gradle/src/main/groovy/au/com/dius/pact/provider/gradle/PactVerificationTask.groovy

@@ -22,7 +22,6 @@ class PactVerificationTask extends DefaultTask {
     @TaskAction
     void verifyPact() {
         ext.failures = [:]
-        Matchers$.registerStandardMatchers()
         providerToVerify.consumers.each { consumer ->
             AnsiConsole.out().println(Ansi.ansi().a('\nVerifying a pact between ').bold().a(consumer.name)
                 .boldOff().a(' and ').bold().a(providerToVerify.name).boldOff())

pact-jvm-provider-gradle/src/main/groovy/au/com/dius/pact/provider/gradle/ProviderClient.groovy

@@ -17,7 +17,7 @@ class ProviderClient {
         def requestMap = [path: request.path()]
         requestMap.headers = [:]
         if (request.headers().defined) {
-            requestMap.headers = JavaConverters$.MODULE$.mapAsJavaMapConverter(request.headers().get()).asJava()
+            requestMap.headers += JavaConverters$.MODULE$.mapAsJavaMapConverter(request.headers().get()).asJava()
         }
 
         if (requestMap.headers['Content-Type']) {
@@ -31,11 +31,17 @@ class ProviderClient {
         }
 
         if (request.query().defined) {
+            // TODO: Accept multiple parameters with the same name
             requestMap.query = request.query().get().split('&')*.split('=').inject([:]) { map, entry ->
-                map[entry[0]] = entry[1]; map
+                map[entry[0]] = entry[1]
+                map
             }
         }
 
+        if (provider.requestFilter != null) {
+            provider.requestFilter(requestMap)
+        }
+
         client.handler.failure = { resp -> resp }
         switch (request.method()) {
             case 'POST':

pact-jvm-provider-gradle/src/main/groovy/au/com/dius/pact/provider/gradle/ProviderInfo.groovy

@@ -8,6 +8,7 @@ class ProviderInfo {
     String name
     def startProviderTask
     def terminateProviderTask
+    def requestFilter
 
     List<ConsumerInfo> consumers = []