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outputs.go
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outputs.go
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package decorator
import (
"fmt"
"regexp"
"github.com/aws/aws-sdk-go/aws/session"
sparta "github.com/mweagle/Sparta"
gocf "github.com/mweagle/go-cloudformation"
"github.com/sirupsen/logrus"
)
var reInvalidOutputChars = regexp.MustCompile("[^A-Za-z0-9]+")
func sanitizedKeyName(userValue string) string {
return reInvalidOutputChars.ReplaceAllString(userValue, "")
}
// PublishAllResourceOutputs is a utility function to include all Ref and Att
// outputs associated with the given (cfResourceName, cfResource) pair.
func PublishAllResourceOutputs(cfResourceName string,
cfResource gocf.ResourceProperties) sparta.ServiceDecoratorHookFunc {
return func(context map[string]interface{},
serviceName string,
cfTemplate *gocf.Template,
S3Bucket string,
S3Key string,
buildID string,
awsSession *session.Session,
noop bool,
logger *logrus.Logger) error {
// Add the Ref
cfTemplate.Outputs[sanitizedKeyName(fmt.Sprintf("%s_Ref", cfResourceName))] = &gocf.Output{
Description: fmt.Sprintf("%s (%s) Ref",
cfResourceName,
cfResource.CfnResourceType()),
Value: gocf.Ref(cfResourceName),
}
// Get the resource attributes
for _, eachAttr := range cfResource.CfnResourceAttributes() {
// Add the function ARN as a stack output
cfTemplate.Outputs[sanitizedKeyName(fmt.Sprintf("%s_Attr_%s", cfResourceName, eachAttr))] = &gocf.Output{
Description: fmt.Sprintf("%s (%s) Attribute: %s",
cfResourceName,
cfResource.CfnResourceType(),
eachAttr),
Value: gocf.GetAtt(cfResourceName, eachAttr),
}
}
return nil
}
}
// PublishAttOutputDecorator returns a TemplateDecoratorHookFunc
// that publishes an Att value for a given Lambda
func PublishAttOutputDecorator(keyName string, description string, fieldName string) sparta.TemplateDecoratorHookFunc {
attrDecorator := func(serviceName string,
lambdaResourceName string,
lambdaResource gocf.LambdaFunction,
resourceMetadata map[string]interface{},
S3Bucket string,
S3Key string,
buildID string,
template *gocf.Template,
context map[string]interface{},
logger *logrus.Logger) error {
// Add the function ARN as a stack output
template.Outputs[sanitizedKeyName(keyName)] = &gocf.Output{
Description: description,
Value: gocf.GetAtt(lambdaResourceName, fieldName),
}
return nil
}
return sparta.TemplateDecoratorHookFunc(attrDecorator)
}
// PublishRefOutputDecorator returns an TemplateDecoratorHookFunc
// that publishes the Ref value for a given lambda
func PublishRefOutputDecorator(keyName string, description string) sparta.TemplateDecoratorHookFunc {
attrDecorator := func(serviceName string,
lambdaResourceName string,
lambdaResource gocf.LambdaFunction,
resourceMetadata map[string]interface{},
S3Bucket string,
S3Key string,
buildID string,
template *gocf.Template,
context map[string]interface{},
logger *logrus.Logger) error {
// Add the function ARN as a stack output
template.Outputs[sanitizedKeyName(keyName)] = &gocf.Output{
Description: description,
Value: gocf.Ref(lambdaResourceName),
}
return nil
}
return sparta.TemplateDecoratorHookFunc(attrDecorator)
}