feat: complete transfer and eviction execution

e2e/scenarios/evict_happy.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+"""Drive a covered cache eviction through the bot-free HTTP adapter."""
+
+from __future__ import annotations
+
+import json
+import sys
+import time
+import urllib.request
+
+
+CONTROL = "http://127.0.0.1:18081/test/v1"
+INFO_HASH = "330be0cb7c2201135a2de63b28e77993745ff688"
+
+
+def get_json(url: str):
+    with urllib.request.urlopen(url, timeout=35) as response:
+        return json.load(response)
+
+
+def post_json(url: str, value: object):
+    request = urllib.request.Request(
+        url,
+        data=json.dumps(value, separators=(",", ":")).encode(),
+        method="POST",
+        headers={"Content-Type": "application/json"},
+    )
+    with urllib.request.urlopen(request, timeout=35) as response:
+        return json.load(response)
+
+
+def main() -> int:
+    preview = post_json(f"{CONTROL}/jobs/preview", {
+        "operation": "evict_cache",
+        "cache_client_id": "cache-1",
+        "resource_id": {"info_hash_v1_hex": INFO_HASH},
+    })
+    definition = preview["definition"]
+    job_id = definition["job_id"]
+    post_json(f"{CONTROL}/jobs", {
+        "preview_revision": preview["preview_revision"],
+        "definition": definition,
+    })
+    deadline = time.monotonic() + 180
+    while time.monotonic() < deadline:
+        job = get_json(f"{CONTROL}/jobs/{job_id}")
+        if job["state"] == "JOB_STATE_SUCCEEDED" and job["committed"]:
+            print(json.dumps({
+                "job_id": job_id,
+                "state": job["state"],
+                "committed": job["committed"],
+            }, sort_keys=True))
+            return 0
+        if job["state"] in {"JOB_STATE_FAILED", "JOB_STATE_CANCELLED"}:
+            raise RuntimeError(f"eviction did not succeed: {job}")
+        time.sleep(0.5)
+    raise RuntimeError("timed out waiting for cache eviction")
+
+
+if __name__ == "__main__":
+    try:
+        raise SystemExit(main())
+    except Exception as exc:
+        print(f"eviction happy-path failed: {exc}", file=sys.stderr)
+        raise