[Feature] Implement missing parameters for pushover, such as ttl

[FrederikNJS]

What did you do?

I used the pushover receiver, and tried to add the ttl parameter, but alertmanager didn't recognize the setting.

What did you expect to see?

I expected alertmanager to allow me to use any parameter that pushover supports: https://pushover.net/api

What did you see instead? Under which circumstances?

As mentioned above alertmanager crashes on launch, explaining that it doesn't recognize the ttl parameter.

Environment

• System information:

  $ uname -srm
  Linux 6.1.0-3-amd64 x86_64

• Alertmanager version:

  $ alertmanager --version
  alertmanager, version 0.25.0 (branch: HEAD, revision: 258fab7)
  build user: root@abe866dd5717
  build date: 20221222-14:51:36
  go version: go1.19.4
  platform: linux/amd64

• Prometheus version:

  I'm not using prometheus, but victoria-metrics 1.91.4

• Alertmanager configuration file:

global:
  resolve_timeout: 5m
route:
  receiver: 'pushover'
  repeat_interval: 1h
  routes:
  - match:
      alertname: Watchdog
    receiver: "null"
  - match:
      alertname: InfoInhibitor
    receiver: "null"
receivers:
- name: "null"
- name: 'pushover'
  pushover_configs:
  - user_key: "{{ index . "pushover_key" }}"
    token: "{{ index . "token" }}"
    priority: '0'
    ttl: 3600
    send_resolved: false

• Prometheus configuration file:

Not really relevant

• Logs:

ts=2023-08-09T09:49:40.054Z caller=main.go:240 level=info msg="Starting Alertmanager" version="(version=0.25.0, branch=HEAD, revision=258fab7cdd551f2cf251ed0348f0ad7289aee789)"                                                                                                                                                                                             
ts=2023-08-09T09:49:40.054Z caller=main.go:241 level=info build_context="(go=go1.19.4, user=root@abe866dd5717, date=20221222-14:51:36)"                                                                                                                                                                                                                                      
ts=2023-08-09T09:49:40.350Z caller=coordinator.go:113 level=info component=configuration msg="Loading configuration file" file=/etc/alertmanager/config/alertmanager.yaml                                                                                                                                                                                                    
ts=2023-08-09T09:49:40.353Z caller=coordinator.go:118 level=error component=configuration msg="Loading configuration file failed" file=/etc/alertmanager/config/alertmanager.yaml err="yaml: unmarshal errors:\n  line 23: field ttl not found in type config.plain"

[gotjosh]

In the Alertmanager, we try to use the conservative approach of only including what is needed at the moment as such, we don't aim to provide a 1:1 feature parity with our integration (that would be too much burden on the only two active mantainers 😄)

With that said, I'd be happy to accept a PR that includes this feature. Feel free to take a look at #3318 as example.

[heliapb]

Hi @gotjosh I would like to work on this issue, could you please assign it to me?

[chrko]

I think that has been implemented in #3474 and therefore can be closed.