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/
or.go
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/
or.go
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package condition
import (
"fmt"
"github.com/dafanshu/benthos/v3/lib/log"
"github.com/dafanshu/benthos/v3/lib/metrics"
"github.com/dafanshu/benthos/v3/lib/types"
)
//------------------------------------------------------------------------------
func init() {
Constructors[TypeOr] = TypeSpec{
constructor: NewOr,
Summary: `
Returns the logical OR of children conditions.`,
Footnotes: `
## Examples
The following snippet resolves to true if a message contains 'foo' or 'bar':
` + "``` yaml" + `
or:
- text:
operator: contains
arg: foo
- text:
operator: contains
arg: bar
` + "```" + ``,
}
}
//------------------------------------------------------------------------------
// OrConfig is a configuration struct containing fields for the Or condition.
type OrConfig []Config
// NewOrConfig returns a OrConfig with default values.
func NewOrConfig() OrConfig {
return OrConfig{}
}
//------------------------------------------------------------------------------
// Or is a condition that returns the logical or of all children.
type Or struct {
children []Type
mCount metrics.StatCounter
mTrue metrics.StatCounter
mFalse metrics.StatCounter
}
// NewOr returns an Or condition.
func NewOr(
conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error) {
children := []Type{}
for i, childConf := range conf.Or {
ns := fmt.Sprintf("%v", i)
child, err := New(childConf, mgr, log.NewModule("."+ns), metrics.Namespaced(stats, ns))
if err != nil {
return nil, fmt.Errorf("failed to create child '%v': %v", childConf.Type, err)
}
children = append(children, child)
}
return &Or{
children: children,
mCount: stats.GetCounter("count"),
mTrue: stats.GetCounter("true"),
mFalse: stats.GetCounter("false"),
}, nil
}
//------------------------------------------------------------------------------
// Check attempts to check a message part against a configured condition.
func (c *Or) Check(msg types.Message) bool {
c.mCount.Incr(1)
for _, child := range c.children {
if child.Check(msg) {
c.mTrue.Incr(1)
return true
}
}
c.mFalse.Incr(1)
return false
}
//------------------------------------------------------------------------------