Notify only when new firing alerts are added #1205
Merged
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After the initial notification has been sent, AlertManager shouldn't notify the
receiver again when no new alerts have been added to the group during
group_interval.
This change also modifies the acceptance test framework to assert that no
notification has been received in a given interval.
Fixes #1195.
cc @brian-brazil, @stuartnelson3, @brancz. Since #703 (meaning 0.6.0), AlertManager sends notifications either when a new alert is firing or when a new alert gets resolved. Brian suggested in #1195 that it shouldn't in the latter case.