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MXS-1333: QLAFilter, add option to log execution time

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Adds an option 'reply_time' to log_data. When enabled, query execution time
in milliseconds is logged. Execution time is measured as the time between
routeQuery and the first clientReply.
This commit is contained in:
Esa Korhonen
2017-10-31 15:16:34 +02:00
parent fca11f992a
commit 032b2f3846
2 changed files with 205 additions and 59 deletions
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18
Documentation/Filters/Query-Log-All-Filter.md
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@ -116,18 +116,22 @@ Type of data to log in the log files. Parameter value is a comma separated list
of the following values. By default the _date_, _user_ and _query_ options are
enabled.
|Value | Description |
|--------|---------------------------------------------------|
|service | Log service name |
|session | Log unique session id (ignored for session-files) |
|date | Log timestamp |
|user | Log user and hostname of client |
|query | Log the actual query |
| Value | Description |
| -------- |--------------------------------------------------|
| service | Service name |
| session | Unique session id (ignored for session files) |
| date | Timestamp |
| user | User and hostname of client |
| reply_time | Response time (ms until first reply from server) |
| query | Query |
```
log_data=date, user, query
```
If *reply_time* is enabled, the log entry is written when the first reply from server is received.
Otherwise, the entry is written when receiving query from client.
### `flush`
Flush log files after every write. The default is false.