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Merge pull request #1344 from prometheus/consistent-error-message

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Rename matrix to range selector in external error messages
This commit is contained in:
Tobias Schmidt 2016-01-25 13:40:08 -05:00
parent 3214cb9529 1a91cd6e09
commit 4dc8c4f94c
2 changed files with 9 additions and 4 deletions
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9
promql/parse.go
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@ -609,19 +609,20 @@ func (p *parser) unaryExpr() Expr {
case *MatrixSelector:
s.Offset = offset
default:
p.errorf("offset modifier must be preceded by a metric or range selector, but follows a %T instead", e)
p.errorf("offset modifier must be preceded by an instant or range selector, but follows a %T instead", e)
}
}
return e
}
// rangeSelector parses a matrix selector based on a given vector selector.
// rangeSelector parses a matrix (a.k.a. range) selector based on a given
// vector selector.
//
// <vector_selector> '[' <duration> ']'
//
func (p *parser) rangeSelector(vs *VectorSelector) *MatrixSelector {
const ctx = "matrix selector"
const ctx = "range selector"
p.next()
var erange time.Duration
@ -948,7 +949,7 @@ func (p *parser) offset() time.Duration {
return offset
}
// vectorSelector parses a new vector selector.
// vectorSelector parses a new (instant) vector selector.
//
// <metric_identifier> [<label_matchers>]
// [<metric_identifier>] <label_matchers>

4
promql/parse_test.go
View file

@ -228,6 +228,10 @@ var testExpr = []struct {
input: `*test`,
fail: true,
errMsg: "no valid expression found",
}, {
input: "1 offset 1d",
fail: true,
errMsg: "offset modifier must be preceded by an instant or range selector",
},
// Vector binary operations.
{