amtool: Detect version drift and warn users #2672
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This change detects the alertmanager version when initiating the client. It ignores most errors since I expect amtool to fail later. If amtool is not compiled with proper version, we do not do anything either. We use MajorMinor for now as we have not reach 1.0, but we still allow the bugfix version number (Z in x.y.Z) to differ. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
| @@ -93,7 +95,19 @@ func NewAlertmanagerClient(amURL *url.URL) *client.Alertmanager { | |||
| cr.DefaultAuthentication = clientruntime.BasicAuth(amURL.User.Username(), password) | |||
| } | |||
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| return client.New(cr, strfmt.Default) | |||
| c := client.New(cr, strfmt.Default) | |||
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Given this is now executed for every command, can we an option to skip it?
Something like:
var skipVersionCheck bool
app.Flag("skip.version-check", "Skip version checks when executing commands.").BoolVar(&skipVersionCheck)
// Then, we can do something like
if skipVersionCheck {
return c
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| status, err := c.General.GetStatus(nil) | ||
| if err != nil || status.Payload.VersionInfo == nil || version.Version == "" { | ||
| // We can not get version info, or we do not know our own version. Let amtool continue. |
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Now that we have an option to cancel the check, I don't think we should fail silently. How do you feel about logging that we were unable to compute the version and tell the user that should upgrade/downgrade?
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If we can not run the check, it is because alertmanager does not work at all, and the error will be printed in the actual call later on.
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I was thinking more in the case of Grafana but this is not a concern for us here to be honest.
| return c | ||
| } | ||
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| if semver.MajorMinor("v"+*status.Payload.VersionInfo.Version) != semver.MajorMinor("v"+version.Version) { |
Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
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updated |
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LGTM.
$ ./amtool --alertmanager.url=http://localhost:9093 config show
Warning: amtool version (0.22.2) and alertmanager version (0.21.0) are different.
# and then
$ ./amtool --alertmanager.url=http://localhost:9093 config show --no-version-checkBoth work as expected.
This change detects the alertmanager version when initiating the client.
It ignores most errors since I expect amtool to fail later.
If amtool is not compiled with proper version, we do not do anything
either.
We use MajorMinor for now as we have not reach 1.0, but we still allow
the bugfix version number (Z in x.y.Z) to differ.
Signed-off-by: Julien Pivotto roidelapluie@inuits.eu