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Merge pull request #610 from metaflow/master

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docs(api) added note for CAS about prevIndex=0 and `cause` meaning in server response
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Brandon Philips 2014-03-11 20:25:31 -07:00
commit a9d5cc5a50
1 changed files with 5 additions and 4 deletions
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9
Documentation/api.md
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@ -437,14 +437,15 @@ This will try to compare the previous value of the key and the previous value we
```json
{
"cause": "[two != one] [0 != 8]",
"cause": "[two != one]",
"errorCode": 101,
"index": 8,
"message": "Test Failed"
}
```
which means `CompareAndSwap` failed.
which means `CompareAndSwap` failed. `cause` explains why the test failed.
Note: the condition prevIndex=0 always passes.
Let's try a valid condition:
@ -503,7 +504,7 @@ The error code explains the problem:
{
"errorCode": 101,
"message": "Compare failed",
"cause": "[two != one] [0 != 8]",
"cause": "[two != one]",
"index": 8
}
```
@ -518,7 +519,7 @@ curl -L http://127.0.0.1:4001/v2/keys/foo?prevIndex=1 -XDELETE
{
"errorCode": 101,
"message": "Compare failed",
"cause": "[ != one] [1 != 8]",
"cause": "[1 != 8]",
"index": 8
}
```