Added webhook functionality to the git middleware.

The webhook providers reside behind a small interface which determines if
a provider should run. If a provider should run it delegates
responsibility of the request to the provider.
ghdeploy initial commit

Added webhook functionality to the git middleware.
The webhook providers reside behind a small interface which determines if a provider should run. If a provider should run it delegates responsibility of the request to the provider.

Add tests

Remove old implementation

Fix inconsistency with git interval pulling.

Remove '\n' from logging statements and put the initial pull into a startup function

middleware/git/webhook/github_hook_test.go

@@ -0,0 +1,63 @@
+package webhook
+
+import (
+	"bytes"
+	"github.com/mholt/caddy/middleware/git"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestGithubDeployPush(t *testing.T) {
+	repo := &git.Repo{Branch: "master", HookUrl: "/github_deploy", HookSecret: "supersecret"}
+	ghHook := GithubHook{}
+
+	for i, test := range []struct {
+		body         string
+		event        string
+		responseBody string
+		code         int
+	}{
+		{"", "", "", 400},
+		{"", "push", "", 400},
+		{pushBodyOther, "push", "", 200},
+		{pushBodyPartial, "push", "", 400},
+		{"", "release", "", 400},
+		{"", "ping", "pong", 200},
+	} {
+
+		req, err := http.NewRequest("POST", "/github_deploy", bytes.NewBuffer([]byte(test.body)))
+		if err != nil {
+			t.Fatalf("Test %v: Could not create HTTP request: %v", i, err)
+		}
+
+		if test.event != "" {
+			req.Header.Add("X-Github-Event", test.event)
+		}
+
+		rec := httptest.NewRecorder()
+
+		code, err := ghHook.Handle(rec, req, repo)
+
+		if code != test.code {
+			t.Errorf("Test %d: Expected response code to be %d but was %d", i, test.code, code)
+		}
+
+		if rec.Body.String() != test.responseBody {
+			t.Errorf("Test %d: Expected response body to be '%v' but was '%v'", i, test.responseBody, rec.Body.String())
+		}
+	}
+
+}
+
+var pushBodyPartial = `
+{
+  "ref": ""
+}
+`
+
+var pushBodyOther = `
+{
+  "ref": "refs/heads/some-other-branch"
+}
+`