https://github.com/kubesphere/event-rule-engine
https://github.com/kubesphere/event-rule-engine
Last synced: 2 months ago
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- Host: GitHub
- URL: https://github.com/kubesphere/event-rule-engine
- Owner: kubesphere
- Created: 2019-08-05T11:46:13.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2023-06-02T10:13:48.000Z (about 2 years ago)
- Last Synced: 2024-04-13T21:43:07.534Z (about 1 year ago)
- Language: Go
- Size: 2.01 MB
- Stars: 10
- Watchers: 4
- Forks: 6
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Event Rule Engine
[](https://github.com/KubeSphere/KubeSphere/blob/master/LICENSE)
----
## Introduction
Event Rule Engine is an rule script evaluating engine for KubeSphere event processing. It can run expression calculation on json members.
## Supported grammer
### Boolean calculation
Operation supported: and, or, not, =, !=
Variables contain json boolean member can calculate directly.
```
Examples
open and involvedObject.apiVersion="v1"
!open
open = true
open != true
```
>The bool value suport three formates, TRUE True true
### Number comparision
Operation supported: =, !=, >, <, >=, <=, in, not in
Data type supported: int, long, float, double
```
Examples
count >= 20
```
### String comparision
Operation supported: =, !=, >, <, >=, <=, in, not in, contains, not contains
```
Examples
metadata.namespace = "kube-system"
metadata.namespace in ("kube-system", "default")
metadata.namespace contains "system"
```
### Regular comparision
Operation supported: like, not like, regex, not regex
```
Examples
metadata.namespace like "ks*"
metadata.name like "redis-?"
metadata.namespace in ("kube-system", "default")
metadata.namespace contains "system"
```
>Use '*' to substitute any string, use '?' to substitute a character。
>Regexp, not regexp operation only suport standard regular syntax.
### Array comparision
Operation supported: all
```
Examples
ResponseObject.status.images[28].names[0].names = "redis"
```
>You can use '*' to substitute the index of array, this means if any element of the array match the right value, then expression holds。
>You can use "start:end" such as "1:5" to specify a subset of th array. You can omitted either the start index or the end index,
>it means the subset start at the begining of array, or end at the ending of array.
## Complex examples
```
Examples
(metadata.namespace in ("kube-system", "default") or count >= 20) and involvedObject.apiVersion contains "v1"
```