Description
What went wrong?
I had a state machine definition with a Catch on a Task. When I added a ResultPath to the Catcher I got an error when trying to deploy.
What did you expect should have happened?
I expected deployment to be successful and the catcher to use the ResultPath. Note, this is valid in the the JSON definition that appears in the AWS Console. There shoudn't be an error.
What was the config you used?
// ...
const serverlessConfiguration = {
service: {
name: "content-migration",
},
frameworkVersion: ">=1.72.0",
custom: {
webpack: {
webpackConfig: "./webpack.config.js",
includeModules: true,
},
},
plugins: ["serverless-step-functions", "serverless-webpack"],
provider: {
name: "aws",
region: "eu-west-1",
runtime: "nodejs12.x",
timeout: 60,
environment: {
AWS_NODEJS_CONNECTION_REUSE_ENABLED: "1",
},
},
functions: {
createImageInContentful: {
handler: "src/titles/createImage.handler",
description: "Create an image asset in Contentful",
environment: { ...contentfulEnvironmentVariables },
},
publishImageInContentful: {
handler: "src/titles/publishImage.handler",
description: "Publish an image asset in Contentful",
environment: { ...contentfulEnvironmentVariables },
},
},
stepFunctions: {
stateMachines: {
migrateAllTitlesMainImage: {
name: "MigrateAllTitlesMainImage",
definition: {
Comment: "Migrate images from titles from Airtable into Contentful",
StartAt: "MigrateAll",
States: {
MigrateAll: {
Type: "Map",
End: true,
ItemsPath: "$.titles",
Iterator: {
StartAt: "CreateContentfulAsset",
States: {
CreateContentfulAsset: {
Type: "Task",
Next: "PublishContentfulAsset",
Resource: {
"Fn::GetAtt": ["createImageInContentful", "Arn"],
},
Catch: [
{
ErrorEquals: ["VersionMismatch"],
ResultPath: "$.CreateContentfulAssetError",
Next: "AssetAlreadyCreated",
},
],
},
AssetAlreadyCreated: {
Type: "Pass",
Next: "PublishContentfulAsset",
},
PublishContentfulAsset: {
Type: "Task",
End: true,
Resource: {
"Fn::GetAtt": ["publishImageInContentful", "Arn"],
},
},
},
},
},
},
},
},
},
activities: ["content-migration-titles-images"],
validate: true,
},
};
module.exports = serverlessConfiguration;What stacktrace or error message from your provider did you see?
I got this in the console after running serverless deploy
Serverless Error ---------------------------------------
✕ State machine "migrateAllTitlesMainImage" definition is invalid:
undefined: undefined
No errors
Additional Data
- Serverless Framework Core Version you're using: 1.78.1
- The Plugin Version you're using: 2.22.1
- Operating System: MacOS
- Stack Trace: n/a
- Provider Error messages: see above
Note
I notice in your example there is a ResultPath for the state itself. Adding this to my task makes the issue go away
CreateContentfulAsset: {
Type: "Task",
Next: "PublishContentfulAsset",
Resource: {
"Fn::GetAtt": ["createImageInContentful", "Arn"],
},
Catch: [
{
ErrorEquals: ["VersionMismatch"],
ResultPath: "$.CreateContentfulAssetError",
Next: "AssetAlreadyCreated",
},
],
+ ResultPath: "$.CreateContentfulAssetResult",
},
I think that either this should be fixed (to stay in sync with what works in AWS) or a more informative error should be output to save time for anyone who hits this error.
BTW thanks for a great plugin.