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prometheus/notifier
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Luke Overend 9532c2c700 Pass ams to go routine when sending alerts (#3284) 
Currently when sending alerts via the go routine within `sendAll`, the value
of `ams` is not passed to the routine, causing it to use the updated value of `ams`.

Example config:

```
alerting:
  alertmanagers:
    - basic_auth:
        username: 'prometheus'
        password: 'test123'
      static_configs:
      - targets:
        - localhost:9094
    - static_configs:
      - targets:
        - localhost:9095
```

In this example alerts sent to `localhost:9094` fail with:

```
level=error ts=2017-10-12T10:03:53.456819948Z caller=notifier.go:445
component=notifier alertmanager=http://localhost:9094/api/v1/alerts
count=1 msg="Error sending alert" err="bad response status 401
Unauthorized"
```

If you change the order to be:

```
alerting:
  alertmanagers:
    - static_configs:
      - targets:
        - localhost:9095
    - basic_auth:
        username: 'prometheus'
        password: 'test123'
      static_configs:
      - targets:
        - localhost:9094
```

It works as expected.

This commit changes the behavour so `ams` is passed to the go routine so
`n.sendOne` uses the appropriate `http.Client` details.
2017-12-12 13:40:00 +00:00
..
notifier.go Pass ams to go routine when sending alerts (#3284) 2017-12-12 13:40:00 +00:00
notifier_test.go Pass ams to go routine when sending alerts (#3284) 2017-12-12 13:40:00 +00:00