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vmalert: unittest support stale datapoint (#4696)

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* vmalert: unittest support stale datapoint

* add stale ut case
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Haleygo 2023-07-24 21:40:14 +08:00 committed by Aliaksandr Valialkin
parent f536f22dfb
commit ee1b3a48e9
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2 changed files with 8 additions and 6 deletions
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3
app/vmalert/README.md
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@ -818,11 +818,12 @@ series: <string>
# 'a-bxc' becomes 'a a-b a-(2*b) a-(3*b) … a-(c*b)'
# Read this as series starts at a, then c further samples decrementing by b (or incrementing by negative b).
# '_' represents a missing sample from scrape
# 'stale' indicates a stale sample
# Examples:
# 1. '-2+4x3' becomes '-2 2 6 10' - series starts at -2, then 3 further samples incrementing by 4.
# 2. ' 1-2x4' becomes '1 -1 -3 -5 -7' - series starts at 1, then 4 further samples decrementing by 2.
# 3. ' 1x4' becomes '1 1 1 1 1' - shorthand for '1+0x4', series starts at 1, then 4 further samples incrementing by 0.
# 4. ' 1 _x3' becomes '1 _ _ _ ' - the missing sample cannot increment, so 3 missing samples are produced by the '_x3' expression.
# 4. ' 1 _x3 stale' becomes '1 _ _ _ stale' - the missing sample cannot increment, so 3 missing samples are produced by the '_x3' expression.
values: <string>
```

3
docs/vmalert.md
View file

@ -829,11 +829,12 @@ series: <string>
# 'a-bxc' becomes 'a a-b a-(2*b) a-(3*b) … a-(c*b)'
# Read this as series starts at a, then c further samples decrementing by b (or incrementing by negative b).
# '_' represents a missing sample from scrape
# 'stale' indicates a stale sample
# Examples:
# 1. '-2+4x3' becomes '-2 2 6 10' - series starts at -2, then 3 further samples incrementing by 4.
# 2. ' 1-2x4' becomes '1 -1 -3 -5 -7' - series starts at 1, then 4 further samples decrementing by 2.
# 3. ' 1x4' becomes '1 1 1 1 1' - shorthand for '1+0x4', series starts at 1, then 4 further samples incrementing by 0.
# 4. ' 1 _x3' becomes '1 _ _ _ ' - the missing sample cannot increment, so 3 missing samples are produced by the '_x3' expression.
# 4. ' 1 _x3 stale' becomes '1 _ _ _ stale' - the missing sample cannot increment, so 3 missing samples are produced by the '_x3' expression.
values: <string>
```