open-consul/vendor/github.com/stretchr/objx/value.go
Matt Keeler ac78c23021
Implement data filtering of some endpoints (#5579)
Fixes: #4222 

# Data Filtering

This PR will implement filtering for the following endpoints:

## Supported HTTP Endpoints

- `/agent/checks`
- `/agent/services`
- `/catalog/nodes`
- `/catalog/service/:service`
- `/catalog/connect/:service`
- `/catalog/node/:node`
- `/health/node/:node`
- `/health/checks/:service`
- `/health/service/:service`
- `/health/connect/:service`
- `/health/state/:state`
- `/internal/ui/nodes`
- `/internal/ui/services`

More can be added going forward and any endpoint which is used to list some data is a good candidate.

## Usage

When using the HTTP API a `filter` query parameter can be used to pass a filter expression to Consul. Filter Expressions take the general form of:

```
<selector> == <value>
<selector> != <value>
<value> in <selector>
<value> not in <selector>
<selector> contains <value>
<selector> not contains <value>
<selector> is empty
<selector> is not empty
not <other expression>
<expression 1> and <expression 2>
<expression 1> or <expression 2>
```

Normal boolean logic and precedence is supported. All of the actual filtering and evaluation logic is coming from the [go-bexpr](https://github.com/hashicorp/go-bexpr) library

## Other changes

Adding the `Internal.ServiceDump` RPC endpoint. This will allow the UI to filter services better.
2019-04-16 12:00:15 -04:00

54 lines
1.4 KiB
Go

package objx
import (
"fmt"
"strconv"
)
// Value provides methods for extracting interface{} data in various
// types.
type Value struct {
// data contains the raw data being managed by this Value
data interface{}
}
// Data returns the raw data contained by this Value
func (v *Value) Data() interface{} {
return v.data
}
// String returns the value always as a string
func (v *Value) String() string {
switch {
case v.IsStr():
return v.Str()
case v.IsBool():
return strconv.FormatBool(v.Bool())
case v.IsFloat32():
return strconv.FormatFloat(float64(v.Float32()), 'f', -1, 32)
case v.IsFloat64():
return strconv.FormatFloat(v.Float64(), 'f', -1, 64)
case v.IsInt():
return strconv.FormatInt(int64(v.Int()), 10)
case v.IsInt8():
return strconv.FormatInt(int64(v.Int8()), 10)
case v.IsInt16():
return strconv.FormatInt(int64(v.Int16()), 10)
case v.IsInt32():
return strconv.FormatInt(int64(v.Int32()), 10)
case v.IsInt64():
return strconv.FormatInt(v.Int64(), 10)
case v.IsUint():
return strconv.FormatUint(uint64(v.Uint()), 10)
case v.IsUint8():
return strconv.FormatUint(uint64(v.Uint8()), 10)
case v.IsUint16():
return strconv.FormatUint(uint64(v.Uint16()), 10)
case v.IsUint32():
return strconv.FormatUint(uint64(v.Uint32()), 10)
case v.IsUint64():
return strconv.FormatUint(v.Uint64(), 10)
}
return fmt.Sprintf("%#v", v.Data())
}