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45 lines
3.1 KiB
Markdown
45 lines
3.1 KiB
Markdown
# Request log format
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HTTP request logs are written by synapse (see [`synapse/http/site.py`](https://github.com/element-hq/synapse/tree/develop/synapse/http/site.py) for details).
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See the following for how to decode the dense data available from the default logging configuration.
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```
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2020-10-01 12:00:00,000 - synapse.access.http.8008 - 311 - INFO - PUT-1000- 192.168.0.1 - 8008 - {another-matrix-server.com} Processed request: 0.100sec/-0.000sec (0.000sec, 0.000sec) (0.001sec/0.090sec/3) 11B !200 "PUT /_matrix/federation/v1/send/1600000000000 HTTP/1.1" "Synapse/1.20.1" [0 dbevts]
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-AAAAAAAAAAAAAAAAAAAAA- -BBBBBBBBBBBBBBBBBBBBBB- -C- -DD- -EEEEEE- -FFFFFFFFF- -GG- -HHHHHHHHHHHHHHHHHHHHHHH- -IIIIII- -JJJJJJJ- -KKKKKK-, -LLLLLL- -MMMMMMM- -NNNNNN- O -P- -QQ- -RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR- -SSSSSSSSSSSS- -TTTTTT-
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```
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| Part | Explanation |
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| ----- | ------------ |
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| AAAA | Timestamp request was logged (not received) |
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| BBBB | Logger name (`synapse.access.(http\|https).<tag>`, where 'tag' is defined in the [`listeners`](../configuration/config_documentation.md#listeners) config section, normally the port) |
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| CCCC | Line number in code |
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| DDDD | Log Level |
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| EEEE | Request Identifier (This identifier is shared by related log lines)|
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| FFFF | Source IP (Or X-Forwarded-For if enabled) |
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| GGGG | Server Port |
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| HHHH | Federated Server or Local User making request (blank if unauthenticated or not supplied).<br/>If this is of the form `@aaa:example.com|@bbb:example.com`, then that means that `@aaa:example.com` is authenticated but they are controlling `@bbb:example.com`, e.g. if `aaa` is controlling `bbb` [via the admin API](https://element-hq.github.io/synapse/latest/admin_api/user_admin_api.html#login-as-a-user). |
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| IIII | Total Time to process the request |
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| JJJJ | Time to send response over network once generated (this may be negative if the socket is closed before the response is generated)|
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| KKKK | Userland CPU time |
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| LLLL | System CPU time |
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| MMMM | Total time waiting for a free DB connection from the pool across all parallel DB work from this request |
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| NNNN | Total time waiting for response to DB queries across all parallel DB work from this request |
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| OOOO | Count of DB transactions performed |
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| PPPP | Response body size |
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| QQQQ | Response status code<br/>Suffixed with `!` if the socket was closed before the response was generated.<br/>A `499!` status code indicates that Synapse also cancelled request processing after the socket was closed.<br/> |
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| RRRR | Request |
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| SSSS | User-agent |
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| TTTT | Events fetched from DB to service this request (note that this does not include events fetched from the cache) |
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MMMM / NNNN can be greater than IIII if there are multiple slow database queries
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running in parallel.
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Some actions can result in multiple identical http requests, which will return
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the same data, but only the first request will report time/transactions in
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`KKKK`/`LLLL`/`MMMM`/`NNNN`/`OOOO` - the others will be awaiting the first query to return a
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response and will simultaneously return with the first request, but with very
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small processing times.
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