common: rabbit refactor

Generalize interface to allow processing of any events, not just
Gitea events.

common/obs_utils.go

@@ -562,7 +562,21 @@ func (c *ObsClient) DeleteProject(project string) error {
 	}
 
 	return nil
+}
 
+func (c *ObsClient) BuildLog(prj, pkg, repo, arch string) (io.ReadCloser, error) {
+	url := c.baseUrl.JoinPath("build", prj, repo, arch, pkg, "_log")
+	query := url.Query()
+	query.Add("nostream", "1")
+	query.Add("start", "0")
+	url.RawQuery = query.Encode()
+	res, err := c.ObsRequestRaw("GET", url.String(), nil)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return res.Body, nil
 }
 
 type PackageBuildStatus struct {