Feature/tweet file content

README.md

@@ -34,6 +34,7 @@ conform.
   [metadata](http://concourse.ci/implementing-resources.html#resource-metadata)
   in the status will be evaluated prior to sending the tweet. Use `media` to
   include references to photos or video
+* or `statusFile`: A file (generated by your task) that contains the text to tweet.
 
 ##### Optional:
 * `media`: An array of paths to images or video to upload. Any media referenced

ci/tasks/build-resource.yml

@@ -1,7 +1,11 @@
 ---
 platform: linux
 
-image: docker:///golang#1.6-alpine
+image_resource:
+  type: docker-image
+  source:
+    repository: golang
+    tag: 1.6-alpine
 
 inputs:
 - name: source-code

cmd/out/main.go

@@ -53,8 +53,19 @@ func main() {
     concourse.Sayf("Upload of %v complete\n", imageFile)
   }
 
+  statusText := request.Params.Status
+  if request.Params.StatusFile != "" {
+    statusFileContent, fileErr := ioutil.ReadFile(path.Join(workingDir, request.Params.StatusFile))
+    if fileErr != nil {
+      concourse.Fatal("Error reading file: %v\n", fileErr)
+    } else {
+      statusText = string(statusFileContent)
+    }
+
+  }
+
   // expand any variables
-  statusText := os.ExpandEnv(request.Params.Status)
+  statusText = os.ExpandEnv(statusText)
   concourse.Sayf("Posting tweet '%s'\n", statusText)
 
   output := concourse.OutResponse{}

concourse/models.go

@@ -18,6 +18,7 @@ type MetadataPair struct {
 
 type OutParams struct {
   Status string `json:"status"`
+  StatusFile string `json:"statusFile"`
   Media []string `json:"media,omitempty"`
 }