Add multiple nets support to the server

Required by the new SF architecture with a Big + Small nets
official-stockfish/Stockfish#4915
official-stockfish/Stockfish#5068

server/fishtest/rundb.py

@@ -50,7 +50,7 @@
 # To make this practical we will eventually put all schemas
 # in a separate module "schemas.py".
 
-net_name = regex("nn-[a-z0-9]{12}.nnue", name="net_name")
+net_name = regex("nn-[a-f0-9]{12}.nnue", name="net_name")
 tc = regex(r"([1-9]\d*/)?\d+(\.\d+)?(\+\d+(\.\d+)?)?", name="tc")
 str_int = regex(r"[1-9]\d*", name="str_int")
 sha = regex(r"[a-f0-9]{40}", name="sha")
@@ -111,8 +111,8 @@
     "args": {
         "base_tag": str,
         "new_tag": str,
-        "base_net": net_name,
-        "new_net": net_name,
+        "base_nets": [net_name, ...],
+        "new_nets": [net_name, ...],
         "num_games": int,
         "tc": tc,
         "new_tc": tc,
@@ -322,8 +322,8 @@ def new_run(
         msg_new="",
         base_signature="",
         new_signature="",
-        base_net=None,
-        new_net=None,
+        base_nets=None,
+        new_nets=None,
         rescheduled_from=None,
         base_same_as_master=None,
         start_time=None,
@@ -344,8 +344,8 @@ def new_run(
         run_args = {
             "base_tag": base_tag,
             "new_tag": new_tag,
-            "base_net": base_net,
-            "new_net": new_net,
+            "base_nets": base_nets,
+            "new_nets": new_nets,
             "num_games": num_games,
             "tc": tc,
             "new_tc": new_tc,

server/fishtest/views.py

@@ -729,35 +729,34 @@ def get_sha(branch, repo_url):
         return "", ""
 
 
-def get_net(commit_sha, repo_url):
-    """Get the net from evaluate.h or ucioption.cpp in the repo"""
+def get_nets(commit_sha, repo_url):
+    """Get the nets from evaluate.h or ucioption.cpp in the repo"""
     api_url = repo_url.replace(
         "https://github.com", "https://raw.githubusercontent.com"
     )
     try:
-        net = None
+        nets = []
+        pattern = re.compile("nn-[a-f0-9]{12}.nnue")
 
         url1 = api_url + "/" + commit_sha + "/src/evaluate.h"
         options = requests.get(url1).content.decode("utf-8")
         for line in options.splitlines():
             if "EvalFileDefaultName" in line and "define" in line:
-                p = re.compile("nn-[a-z0-9]{12}.nnue")
-                m = p.search(line)
+                m = pattern.search(line)
                 if m:
-                    net = m.group(0)
+                    nets.append(m.group(0))
 
-        if net:
-            return net
+        if nets:
+            return nets
 
         url2 = api_url + "/" + commit_sha + "/src/ucioption.cpp"
         options = requests.get(url2).content.decode("utf-8")
         for line in options.splitlines():
             if "EvalFile" in line and "Option" in line:
-                p = re.compile("nn-[a-z0-9]{12}.nnue")
-                m = p.search(line)
+                m = pattern.search(line)
                 if m:
-                    net = m.group(0)
-        return net
+                    nets.append(m.group(0))
+        return nets
     except:
         raise Exception("Unable to access developer repository: " + api_url)
 
@@ -919,19 +918,19 @@ def strip_message(m):
     )
     data["base_same_as_master"] = master_diff.text == ""
 
-    # Test existence of net
-    new_net = get_net(data["resolved_new"], data["tests_repo"])
-    if new_net:
+    # Test existence of nets
+    new_nets = get_nets(data["resolved_new"], data["tests_repo"])
+    for new_net in new_nets:
         if not request.rundb.get_nn(new_net):
             raise Exception(
                 "The net {}, used by {}, is not "
                 "known to Fishtest. Please upload it to: "
                 "{}/upload.".format(new_net, data["new_tag"], request.host_url)
             )
 
-    # Store net info
-    data["new_net"] = new_net
-    data["base_net"] = get_net(data["resolved_base"], data["tests_repo"])
+    # Store nets info
+    data["new_nets"] = new_nets
+    data["base_nets"] = get_nets(data["resolved_base"], data["tests_repo"])
 
     # Integer parameters
     data["threads"] = int(request.POST["threads"])
@@ -1004,8 +1003,8 @@ def update_nets(request, run):
     run_id = str(run["_id"])
     data = run["args"]
     if run["base_same_as_master"]:
-        base_net = data["base_net"]
-        if base_net:
+        base_nets = data["base_nets"]
+        for base_net in base_nets:
             net = request.rundb.get_nn(base_net)
             if not net:
                 # Should never happen:
@@ -1017,8 +1016,8 @@ def update_nets(request, run):
             if "is_master" not in net:
                 net["is_master"] = True
                 request.rundb.update_nn(net)
-    new_net = data["new_net"]
-    if new_net:
+    new_nets = data["new_nets"]
+    for new_net in new_nets:
         net = request.rundb.get_nn(new_net)
         if not net:
             return
@@ -1366,12 +1365,12 @@ def tests_view(request):
         "new_signature",
         "new_options",
         "resolved_new",
-        "new_net",
+        "new_nets",
         "base_tag",
         "base_signature",
         "base_options",
         "resolved_base",
-        "base_net",
+        "base_nets",
         "sprt",
         "num_games",
         "spsa",

server/tests/test_api.py

@@ -39,8 +39,8 @@ def new_run(self, add_tasks=0):
         msg_new="Super stuff",
         base_signature="123456",
         new_signature="654321",
-        base_net="nn-0000000000a0.nnue",
-        new_net="nn-0000000000a0.nnue",
+        base_nets=["nn-0000000000a0.nnue"],
+        new_nets=["nn-0000000000a0.nnue", "nn-0000000000a1.nnue"],
         rescheduled_from="653db116cc309ae839563103",
         base_same_as_master=False,
         tests_repo="https://google.com",

server/tests/test_rundb.py

@@ -72,8 +72,8 @@ def test_10_create_run(self):
             msg_new="Super stuff",
             base_signature="123456",
             new_signature="654321",
-            base_net="nn-0000000000a0.nnue",
-            new_net="nn-0000000000a0.nnue",
+            base_nets=["nn-0000000000a0.nnue"],
+            new_nets=["nn-0000000000a0.nnue", "nn-0000000000a1.nnue"],
             rescheduled_from="653db116cc309ae839563103",
             base_same_as_master=False,
             tests_repo="https://google.com",