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app/vmselect/promql: fix panic when calculating aggr_func(rollup*())

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The panic has been introduced in dac21d874b
This commit is contained in:
Aliaksandr Valialkin 2023-02-27 11:47:26 -08:00
parent 215206bded
commit d3605ad072
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GPG key ID: A72BEC6CD3D0DED1
2 changed files with 15 additions and 1 deletions
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15
app/vmselect/promql/rollup.go
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@ -282,10 +282,23 @@ func getRollupAggrFuncNames(expr metricsql.Expr) ([]string, error) {
return aggrFuncNames, nil
}
// getRollupTag returns the possible second arg from the expr.
//
// The expr can have the following forms:
// - rollup_func(q, tag)
// - aggr_func(rollup_func(q, tag)) - this form is used during incremental aggregate calculations
func getRollupTag(expr metricsql.Expr) (string, error) {
af, ok := expr.(*metricsql.AggrFuncExpr)
if ok {
// extract rollup_func() from aggr_func(rollup_func(q, tag))
if len(af.Args) != 1 {
logger.Panicf("BUG: unexpected number of args to %s; got %d; want 1", af.AppendString(nil), len(af.Args))
}
expr = af.Args[0]
}
fe, ok := expr.(*metricsql.FuncExpr)
if !ok {
logger.Panicf("BUG: unexpected expression; want metricsql.FuncExpr; got %T; value: %s", expr, expr.AppendString(nil))
logger.Panicf("BUG: unexpected expression; want *metricsql.FuncExpr; got %T; value: %s", expr, expr.AppendString(nil))
}
if len(fe.Args) < 2 {
return "", nil

1
docs/CHANGELOG.md
View file

@ -15,6 +15,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
## tip
* BUGFIX: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): fix panic when executing the query `aggr_func(rollup*(some_value))`. The panic has been introduced in [v1.88.0](https://docs.victoriametrics.com/CHANGELOG.html#v1880).
* BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): use the provided `-remoteWrite.*` auth options when determining whether the remote storage supports [VictoriaMetrics remote write protocol](https://docs.victoriametrics.com/vmagent.html#victoriametrics-remote-write-protocol). Previously the auth options were ignored. This was preventing from automatic switch to VictoriaMetrics remote write protocol.
* BUGFIX: [vmctl](https://docs.victoriametrics.com/vmctl.html): skip measurements with no fields when migrating data from influxdb. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3837).