Start adding some stub classes with the needed data attached to them

Relates to #2

build.gradle

@@ -24,7 +24,17 @@ repositories {
 }
 
 dependencies {
+    compile 'org.codehaus.groovy:groovy-all:2.3.9+'
     compile 'org.glassfish.jersey.core:jersey-client:2.6+'
+
+    /* Needed for serializing requests to JSON and back */
+    compile 'com.fasterxml.jackson.core:jackson-databind:2.3.3+'
+    /* Needed for better time management/sanity */
+    compile 'joda-time:joda-time:2.6+'
+
+
+    testCompile 'org.spockframework:spock-core:0.7-groovy-2.0'
+    testCompile 'cglib:cglib-nodep:2.2.+'
 }
 ////////////////////////////////////////////////////////////////////////////////
 

src/main/groovy/com/github/lookout/whoas/HookRequest.groovy

@@ -0,0 +1,35 @@
+package com.github.lookout.whoas
+
+import com.fasterxml.jackson.annotation.JsonProperty
+import org.joda.time.DateTime
+
+class HookRequest {
+    private Long retries
+    private String url
+    private String postData
+    private DateTime deliverAfter
+
+
+    /* Constructor for Jackson */
+    HookRequest() { }
+
+    @JsonProperty
+    Long getRetries() {
+        return this.retries
+    }
+
+    @JsonProperty
+    String getUrl() {
+        return this.url
+    }
+
+    @JsonProperty
+    String getPostData() {
+        return this.postData
+    }
+
+    @JsonProperty
+    String getDeliverAfter() {
+        return this.deliverAfter.toString()
+    }
+}

src/main/groovy/com/github/lookout/whoas/IHookQueue.groovy

@@ -0,0 +1,26 @@
+package com.github.lookout.whoas
+
+
+/**
+ * Interface defining how 'HookQueue' providers should behave
+ *
+ * This allows for different queueing implementations behind whoas
+ */
+interface IHookQueue {
+    /**
+     * Return the size of the queue, may not be implemented by some providers
+     * in which case it will return -1
+     */
+    Long getSize()
+
+
+    /**
+     *
+     */
+    void pop(Closure action)
+
+    /**
+     *
+     */
+    Boolean enqueue(HookRequest request)
+}

src/main/groovy/com/github/lookout/whoas/InMemoryQueue.groovy

@@ -0,0 +1,25 @@
+package com.github.lookout.whoas
+
+
+import java.util.concurrent.LinkedBlockingQueue
+
+/**
+ * A simple in-memory queue that offers no persistence between process restarts
+ */
+class InMemoryQueue implements IHookQueue {
+    private LinkedBlockingQueue internalQueue
+
+    InMemoryQueue() {
+        this.internalQueue = new LinkedBlockingQueue()
+    }
+
+    Long getSize() {
+        return this.internalQueue.size()
+    }
+
+    void pop(Closure action) {
+    }
+
+    Boolean enqueue(HookRequest request) {
+    }
+}

src/test/groovy/com/github/lookout/whoas/HookRequestSpec.groovy

@@ -0,0 +1,6 @@
+package com.github.lookout.whoas
+
+import spock.lang.*
+
+class HookRequestSpec extends Specification {
+}

src/test/groovy/com/github/lookout/whoas/InMemoryQueueSpec.groovy

@@ -0,0 +1,14 @@
+package com.github.lookout.whoas
+
+import spock.lang.*
+
+class InMemoryQueueSpec extends Specification {
+
+    def "getSize() should return 0 by default"() {
+        given:
+        InMemoryQueue queue = new InMemoryQueue()
+
+        expect:
+        queue.size == 0
+    }
+}