Adding Rollbar hook

readme: describing rollbar hook options

Author: lucasgomide

README.md

@@ -54,7 +54,11 @@ Here is all avaliables hook's configurations and your descriptions. Remember tha
   - **host** Tell to snith your sentry host (e.g http://sentry.io or http://sentry.self.hosted)
   - **organization_slug** The organization slug is a unique ID used to identify your organization. (You'll find it at your sentry's configuration, probably)
   - **project_slug** The Project Slug is a unique ID used to identify your project (You'll find it at your project config)
-  - **auth_token** The Auth Token to use the Sentry Web API. You can find [here](https://docs.sentry.io/api/auth/#auth-tokens)
+  - **auth_token** The Auth Token to use the Sentry Web API. You can find more [here](https://docs.sentry.io/api/auth/#auth-tokens)
+  - **env** The application's environment variable (e.g development, production)
+
+- Rollbar
+  - **access_token** The access token with `post_server_item` scope. You can find more [here](https://rollbar.com/docs/api/#authentication)
   - **env** The application's environment variable (e.g development, production)
 
 ## Example

hook/hook.go

@@ -24,6 +24,8 @@ func Execute(h types.Hook, t types.Tsuru) {
 				h = &Slack{}
 			case "Sentry":
 				h = &Sentry{}
+			case "Rollbar":
+				h = &Rollbar{}
 			default:
 				continue
 			}

hook/rollbar.go

@@ -0,0 +1,47 @@
+package hook
+
+import (
+	"bytes"
+	"errors"
+	"github.com/lucasgomide/snitch/types"
+	"net/http"
+)
+
+type Rollbar struct {
+	AccessToken string
+	Env         string
+}
+
+func (r Rollbar) CallHook(deploys []types.Deploy) error {
+	data := []byte(
+		`{
+			"access_token": "` + r.AccessToken + `",
+			"environment": "` + r.Env + `",
+			"revision": "` + deploys[0].Commit + `",
+			"local_username": "` + deploys[0].User + `"
+		}
+	`)
+
+	resp, err := http.Post("https://api.rollbar.com/api/1/deploy/", "application/json", bytes.NewReader(data))
+
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode != 200 {
+		return errors.New("Rollbar - response status code isn't 200")
+	}
+	return nil
+}
+
+func (r Rollbar) ValidatesFields() error {
+	if r.AccessToken == "" {
+		return errors.New("Field access_token into Rollbar hook is required")
+	}
+
+	if r.Env == "" {
+		return errors.New("Field env into Rollbar hook is required")
+	}
+
+	return nil
+}

hook/rollbar_test.go

@@ -0,0 +1,89 @@
+package hook
+
+import (
+	"github.com/lucasgomide/snitch/types"
+	"gopkg.in/jarcoal/httpmock.v1"
+	"strings"
+	"testing"
+)
+
+func TestCreateDeploySuccessfulOnRollbar(t *testing.T) {
+	r := Rollbar{"abc", "development"}
+
+	var (
+		deploys       []types.Deploy
+		urlRollbarApi = "https://api.rollbar.com/api/1/deploy/"
+	)
+
+	deploys = append(deploys, types.Deploy{"", "", "sha1", "user@g.com", ""})
+
+	httpmock.Activate()
+	defer httpmock.DeactivateAndReset()
+
+	httpmock.RegisterResponder("POST", urlRollbarApi,
+		httpmock.NewStringResponder(200, `ok`))
+
+	if err := r.CallHook(deploys); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestReturnsErrorWhenCreateDeployFailsOnRollbar(t *testing.T) {
+	r := Rollbar{"abc", "development"}
+	var deploys []types.Deploy
+	deploys = append(deploys, types.Deploy{"", "", "sha1", "user@g.com", ""})
+
+	httpmock.Activate()
+	defer httpmock.DeactivateAndReset()
+
+	httpmock.RegisterNoResponder(nil)
+
+	if err := r.CallHook(deploys); err == nil {
+		t.Error("Expected returns error, got no error")
+	} else if !strings.Contains(err.Error(), "no responder") {
+		t.Error("Expected that the returns contain: no responder, got", err.Error())
+	}
+}
+
+func TestReturnsErrorWhenRequestToCreateDeployIsnt200OnRollbar(t *testing.T) {
+	r := Rollbar{"abc123", "development"}
+	var (
+		deploys       []types.Deploy
+		urlRollbarApi = "https://api.rollbar.com/api/1/deploy/"
+	)
+	deploys = append(deploys, types.Deploy{"", "", "sha1", "user@g.com", ""})
+
+	httpmock.Activate()
+	defer httpmock.DeactivateAndReset()
+
+	httpmock.RegisterResponder("POST", urlRollbarApi,
+		httpmock.NewStringResponder(501, `error`))
+	expected := "Rollbar - response status code isn't 200"
+	if err := r.CallHook(deploys); err == nil {
+		t.Error("Expected returns error, got no error")
+	} else if !strings.Contains(err.Error(), expected) {
+		t.Errorf("Expected that the returns contain: %s, got %s", expected, err.Error())
+	}
+}
+
+func TestValidateFieldsOnRollbar(t *testing.T) {
+	r := Rollbar{}
+	var err error
+	if err = r.ValidatesFields(); err == nil {
+		t.Error("Expected returns error, got nil error")
+	} else if err.Error() != "Field access_token into Rollbar hook is required" {
+		t.Error("Expected error Field access_token into Rollbar hook is required, got", err.Error())
+	}
+
+	r.AccessToken = "abc123"
+	if err = r.ValidatesFields(); err == nil {
+		t.Error("Expected returns error, got nil error")
+	} else if err.Error() != "Field env into Rollbar hook is required" {
+		t.Error("Expected error Field env into Rollbar hook is required, got", err.Error())
+	}
+
+	r.Env = "dev"
+	if err = r.ValidatesFields(); err != nil {
+		t.Error("Expected returns no error, got", err.Error())
+	}
+}