http response prometheus /api/v1/labels 200 {"status":"success","data":["alertname"]}
http response prometheus /api/v1/query_range 200 {"status":"success","data":{"resultType":"matrix","result":[{"metric":{},"values":[]}]}}
http start prometheus 127.0.0.1:9109

exec bash -x ./test.sh &
exec karma --pid-file=karma.pid --config.file=karma.yaml
! stdout .
cmp stderr stderr.txt
wait

-- stderr.txt --
level=info msg="Reading configuration file" path=karma.yaml
level=info msg="Version: dev"
level=info msg="Configured Alertmanager source" cluster=default name=default proxy=false readonly=false uri=http://127.0.0.1
level=info msg="Writing PID file" path=karma.pid
level=info msg="Initial Alertmanager collection"
level=info msg="Pulling latest alerts and silences from Alertmanager"
level=info msg="Collecting alerts and silences" alertmanager=default
level=info msg="GET request" timeout=40 uri=http://127.0.0.1/metrics
level=error msg="Request failed" error="Get \"http://127.0.0.1/metrics\": dial tcp 127.0.0.1:80: connect: connection refused" alertmanager=default uri=http://127.0.0.1
level=error msg="Collection failed" error="Get \"http://127.0.0.1/api/v2/silences\": dial tcp 127.0.0.1:80: connect: connection refused" alertmanager=default try=1/2
level=info msg="GET request" timeout=40 uri=http://127.0.0.1/metrics
level=error msg="Request failed" error="Get \"http://127.0.0.1/metrics\": dial tcp 127.0.0.1:80: connect: connection refused" alertmanager=default uri=http://127.0.0.1
level=error msg="Collection failed" error="Get \"http://127.0.0.1/api/v2/silences\": dial tcp 127.0.0.1:80: connect: connection refused" alertmanager=default try=2/2
level=info msg="Collection completed"
level=info msg="Done, starting HTTP server"
level=info msg="Starting HTTP server" address=127.0.0.1:8109
level=warn msg="Error while configuring HTTP transport for history request" error="failed to parse provided proxy url \"%gh&%ij\": parse \"%gh&%ij\": invalid URL escape \"%gh\"" uri=http://127.0.0.1:9109 worker=1
level=info msg="Shutting down HTTP server" signal=terminated
level=info msg="HTTP server shut down"
level=info msg="Removing PID file" path=karma.pid
-- query.json --
{
    "sources": [
        "http://127.0.0.1:9109",
        "http://127.0.0.1:9109"
    ],
    "labels": {
        "alertname": "Fake Alert"
    }
}
-- karma.yaml --
alertmanager:
  servers:
    - name: default
      uri: http://127.0.0.1
listen:
  address: 127.0.0.1
  port: 8109
history:
  enabled: true
  workers: 1
  timeout: 10s
  rewrite:
    - source: '(.*)'
      uri: '$1'
      proxy_url: '%gh&%ij'
-- test.sh --
while [ ! -f karma.pid ]; do sleep 1 ; done
sleep 5
curl -s -f -o /dev/null -XPOST -d @query.json http://127.0.0.1:8109/history.json
cat karma.pid | xargs kill
