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and.go
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and.go
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// Copyright (c) 2018 Ashley Jeffs
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright andice and this permission andice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT and LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package condition
import (
"fmt"
"github.com/Jeffail/benthos/lib/log"
"github.com/Jeffail/benthos/lib/metrics"
"github.com/Jeffail/benthos/lib/types"
)
//------------------------------------------------------------------------------
func init() {
Constructors[TypeAnd] = TypeSpec{
constructor: NewAnd,
description: `
And is a condition that returns the logical AND of its children conditions.`,
sanitiseConfigFunc: func(conf Config) (interface{}, error) {
var err error
condConfs := make([]interface{}, len(conf.And))
for i, cConf := range conf.And {
if condConfs[i], err = SanitiseConfig(cConf); err != nil {
return nil, err
}
}
return condConfs, nil
},
}
}
//------------------------------------------------------------------------------
// AndConfig is a configuration struct containing fields for the And condition.
type AndConfig []Config
// NewAndConfig returns a AndConfig with default values.
func NewAndConfig() AndConfig {
return AndConfig{}
}
//------------------------------------------------------------------------------
// And is a condition that returns the logical AND of all children.
type And struct {
children []Type
}
// NewAnd returns an And condition.
func NewAnd(
conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error) {
children := []Type{}
for _, childConf := range conf.And {
child, err := New(childConf, mgr, log, stats)
if err != nil {
return nil, fmt.Errorf("failed to create child '%v': %v", childConf.Type, err)
}
children = append(children, child)
}
return &And{
children: children,
}, nil
}
//------------------------------------------------------------------------------
// Check attempts to check a message part against a configured condition.
func (c *And) Check(msg types.Message) bool {
for _, child := range c.children {
if !child.Check(msg) {
return false
}
}
return true
}
//------------------------------------------------------------------------------