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Metrics for number of RDATA commands received

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I found myself wishing we had this.
This commit is contained in:
Richard van der Hoff 2018-01-15 17:45:55 +00:00
parent 5e16c1dc8c
commit 5c3c32f16f
1 changed files with 14 additions and 5 deletions
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19
synapse/replication/tcp/protocol.py
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@ -517,25 +517,28 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
self.send_error("Wrong remote") self.send_error("Wrong remote")
def on_RDATA(self, cmd): def on_RDATA(self, cmd):
stream_name = cmd.stream_name
inbound_rdata_count.inc(stream_name)
try: try:
row = STREAMS_MAP[cmd.stream_name].ROW_TYPE(*cmd.row) row = STREAMS_MAP[stream_name].ROW_TYPE(*cmd.row)
except Exception: except Exception:
logger.exception( logger.exception(
"[%s] Failed to parse RDATA: %r %r", "[%s] Failed to parse RDATA: %r %r",
self.id(), cmd.stream_name, cmd.row self.id(), stream_name, cmd.row
) )
raise raise
if cmd.token is None: if cmd.token is None:
# I.e. this is part of a batch of updates for this stream. Batch # I.e. this is part of a batch of updates for this stream. Batch
# until we get an update for the stream with a non None token # until we get an update for the stream with a non None token
self.pending_batches.setdefault(cmd.stream_name, []).append(row) self.pending_batches.setdefault(stream_name, []).append(row)
else: else:
# Check if this is the last of a batch of updates # Check if this is the last of a batch of updates
rows = self.pending_batches.pop(cmd.stream_name, []) rows = self.pending_batches.pop(stream_name, [])
rows.append(row) rows.append(row)
self.handler.on_rdata(cmd.stream_name, cmd.token, rows) self.handler.on_rdata(stream_name, cmd.token, rows)
def on_POSITION(self, cmd): def on_POSITION(self, cmd):
self.handler.on_position(cmd.stream_name, cmd.token) self.handler.on_position(cmd.stream_name, cmd.token)
@ -644,3 +647,9 @@ metrics.register_callback(
}, },
labels=["command", "name", "conn_id"], labels=["command", "name", "conn_id"],
) )
# number of updates received for each RDATA stream
inbound_rdata_count = metrics.register_counter(
"inbound_rdata_count",
labels=["stream_name"],
)