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Posted to notifications@couchdb.apache.org by GitBox <gi...@apache.org> on 2021/11/08 22:46:37 UTC

[GitHub] [couchdb-erlfdb] nickva commented on a change in pull request #37: Configure fdb version

nickva commented on a change in pull request #37:
URL: https://github.com/apache/couchdb-erlfdb/pull/37#discussion_r745151878



##########
File path: rebar.config.script
##########
@@ -0,0 +1,34 @@
+% Hacky means to extract API version from fdbcli protocol version output
+% See https://github.com/apple/foundationdb/blob/master/flow/ProtocolVersion.h
+MaxAPIVersion =
+    begin
+        VsnInfo = os:cmd("fdbcli --version"),
+        {match, [ProtocolStr]} = re:run(VsnInfo, "protocol ([a-f0-9]*)", [{capture, [1], list}]),
+        ProtocolVsn = list_to_integer(ProtocolStr, 16),
+        APIVersionBytes = (ProtocolVsn band 16#0000000FFF00000) bsr 20,

Review comment:
       That's quite neat!




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