gitlab-ci: Download traces from MinIO

Downloading the traces directly from git causes very high egress from
GCE, which is expensive.

So we can expand trace testing further, we are going to keep a cache in
freedesktop.org's MinIO instance. This commit implements downloading
from it.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-By: Rohan Garg <rohan.garg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5472>

.gitlab-ci/traces.yml

@@ -1,6 +1,5 @@
 traces-db:
-  gitlab-project-url: "https://gitlab.freedesktop.org/gfx-ci/tracie/traces-db"
+  download-url: "https://minio-packet.freedesktop.org/mesa-tracie-public/"
-  commit: "d3b1efe0cd69ef6ae40a29a14ed733ee0ba0cb4c"
 
 traces:
   - path: glmark2/desktop-blur-radius=5:effect=blur:passes=1:separable=true:windows=4.rdc

.gitlab-ci/tracie/tracie.py

@@ -36,55 +36,9 @@ def replay(trace_path, device_name):
         log_file = files[0]
         return hashlib.md5(Image.open(image_file).tobytes()).hexdigest(), image_file, log_file
 
-def gitlab_download_metadata(project_url, repo_commit, trace_path):
+def gitlab_ensure_trace(project_url, trace):
-    url = parse.urlparse(project_url)
-
-    url_path = url.path
-    if url_path.startswith("/"):
-        url_path = url_path[1:]
-
-    gitlab_api_url = url.scheme + "://" + url.netloc + "/api/v4/projects/" + parse.quote_plus(url_path)
-
-    r = requests.get(gitlab_api_url + "/repository/files/%s/raw?ref=%s" % (parse.quote_plus(trace_path), repo_commit))
-    metadata_raw = r.text.strip().split('\n')
-    metadata = dict(line.split(' ', 1) for line in metadata_raw[1:])
-    oid = metadata["oid"][7:] if metadata["oid"].startswith('sha256:') else metadata["oid"]
-    size = int(metadata['size'])
-
-    return oid, size
-
-def gitlfs_download_trace(repo_url, repo_commit, trace_path, oid, size):
-    headers = {
-        "Accept": "application/vnd.git-lfs+json",
-        "Content-Type": "application/vnd.git-lfs+json"
-    }
-    json = {
-        "operation": "download",
-        "transfers": [ "basic" ],
-        "ref": { "name": "refs/heads/%s" % repo_commit },
-        "objects": [
-            {
-                "oid": oid,
-                "size": size
-            }
-        ]
-    }
-
-    r = requests.post(repo_url + "/info/lfs/objects/batch", headers=headers, json=json)
-    url = r.json()["objects"][0]["actions"]["download"]["href"]
-    open(TRACES_DB_PATH + trace_path, "wb").write(requests.get(url).content)
-
-def checksum(filename, hash_factory=hashlib.sha256, chunk_num_blocks=128):
-    h = hash_factory()
-    with open(filename,'rb') as f:
-        for chunk in iter(lambda: f.read(chunk_num_blocks*h.block_size), b''):
-            h.update(chunk)
-    return h.hexdigest()
-
-def gitlab_ensure_trace(project_url, repo_commit, trace):
     trace_path = TRACES_DB_PATH + trace['path']
     if project_url is None:
-        assert(repo_commit is None)
         if not os.path.exists(trace_path):
             print("{} missing".format(trace_path))
             sys.exit(1)
@@ -93,18 +47,16 @@ def gitlab_ensure_trace(project_url, repo_commit, trace):
     os.makedirs(os.path.dirname(trace_path), exist_ok=True)
 
     if os.path.exists(trace_path):
-        local_oid = checksum(trace_path)
+        return
 
-    remote_oid, size = gitlab_download_metadata(project_url, repo_commit, trace['path'])
-
-    if not os.path.exists(trace_path) or local_oid != remote_oid:
     print("[check_image] Downloading trace %s" % (trace['path']), end=" ", flush=True)
     download_time = time.time()
-        gitlfs_download_trace(project_url + ".git", repo_commit, trace['path'], remote_oid, size)
+    r = requests.get(project_url + trace['path'])
+    open(trace_path, "wb").write(r.content)
     print("took %ds." % (time.time() - download_time), flush=True)
 
-def gitlab_check_trace(project_url, repo_commit, device_name, trace, expectation):
+def gitlab_check_trace(project_url, device_name, trace, expectation):
-    gitlab_ensure_trace(project_url, repo_commit, trace)
+    gitlab_ensure_trace(project_url, trace)
 
     result = {}
     result[trace['path']] = {}
@@ -145,11 +97,9 @@ def run(filename, device_name):
         y = yaml.safe_load(f)
 
     if "traces-db" in y:
-        project_url = y["traces-db"]["gitlab-project-url"]
+        project_url = y["traces-db"]["download-url"]
-        commit_id = y["traces-db"]["commit"]
     else:
         project_url = None
-        commit_id = None
 
     traces = y['traces'] or []
     all_ok = True
@@ -157,7 +107,7 @@ def run(filename, device_name):
     for trace in traces:
         for expectation in trace['expectations']:
             if expectation['device'] == device_name:
-                ok, result = gitlab_check_trace(project_url, commit_id,
+                ok, result = gitlab_check_trace(project_url,
                                                 device_name, trace,
                                                 expectation)
                 all_ok = all_ok and ok