func newDropFields(c common.Config) (filter.FilterRule, error) {
f := DropFields{}
if err := f.CheckConfig(c); err != nil {
return nil, err
}
config := DropFieldsConfig{}
err := c.Unpack(&config)
if err != nil {
return nil, fmt.Errorf("fail to unpack the drop_fields configuration: %s", err)
}
/* remove read only fields */
for _, readOnly := range filter.MandatoryExportedFields {
for i, field := range config.Fields {
if readOnly == field {
config.Fields = append(config.Fields[:i], config.Fields[i+1:]...)
}
}
}
f.Fields = config.Fields
cond, err := filter.NewCondition(config.ConditionConfig)
if err != nil {
return nil, err
}
f.Cond = cond
return &f, nil
}
func newDropEvent(c common.Config) (filter.FilterRule, error) {
f := DropEvent{}
if err := f.CheckConfig(c); err != nil {
return nil, err
}
config := DropEventConfig{}
err := c.Unpack(&config)
if err != nil {
return nil, fmt.Errorf("fail to unpack the drop_event configuration: %s", err)
}
cond, err := filter.NewCondition(config.ConditionConfig)
if err != nil {
return nil, err
}
f.Cond = cond
return &f, nil
}
func newIncludeFields(c common.Config) (filter.FilterRule, error) {
f := IncludeFields{}
if err := f.CheckConfig(c); err != nil {
return nil, err
}
config := IncludeFieldsConfig{}
err := c.Unpack(&config)
if err != nil {
return nil, fmt.Errorf("fail to unpack the include_fields configuration: %s", err)
}
/* add read only fields if they are not yet */
for _, readOnly := range filter.MandatoryExportedFields {
found := false
for _, field := range config.Fields {
if readOnly == field {
found = true
}
}
if !found {
config.Fields = append(config.Fields, readOnly)
}
}
f.Fields = config.Fields
cond, err := filter.NewCondition(config.ConditionConfig)
if err != nil {
return nil, err
}
f.Cond = cond
return &f, nil
}