CloudFormation: functions like ImportValue and GetAtt inside a Sub FYI - I have the same issue with the current Serverless version (2.12.0). Update 12/05/2019: as Moshe pointed out in the comments, Fn::Sub is not supported by the Serverless framework because it too uses the ${} syntax to support its own variables system. Basically, to create a cross-stack reference, we need to use the Export output field to flag the value of a resource output for export. at AwsCompileApigEvents.getAuthorizer (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\lib\plugins\aws\deploy\compile\events\apiGateway\lib\validate.js:204:37) Or are you striving for an easier way to configure it? Why is there a fake knife on the rack at the end of Knives Out (2019)? Have a question about this project? This fails with the error "Template error: the attribute in Fn::ImportValue must not depend on any resources, imported values, or Fn::GetAZs". Find centralized, trusted content and collaborate around the technologies you use most. I use something like: USERPOOL_ARN: ${cf:${self:provider.environment.STACK_NAME}.UserPoolArn}. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Find centralized, trusted content and collaborate around the technologies you use most. Why does sending via a UdpClient cause subsequent receiving to fail? Is there any alternative way to eliminate CO2 buildup than by breathing or even an alternative to cellular respiration that don't produce CO2? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Condition functions - AWS CloudFormation I have the same issue with set authorizer arn. Why are standard frequentist hypotheses so uninteresting? at BbPromise.reduce (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\lib\classes\PluginManager.js:160:50) This does make me want to just switch to Terraform, just seems a bit daft that we cannot dynamically import return values if we can import the resource itself. bad indentation of a mapping entry, I tried adding a name as well and it doesn't work. As we commented in the following Yaml file : You might use conditions when you want to reuse a template that can create resources in different contexts, such as a test environment versus a production environment. 4- Also Besides 'Fn::ImportValue', Ref: AuthorizerArnImport does not work either. Currently, Cloudformation didn't support dynamic default value. Well occasionally send you account related emails. that actualy work not super but it's working BATCH_JOB_QUEUE: {"Fn::ImportValue":"BatchJobQueue-dev"}, This worked for me, basically you need to name the authorizer to make it work, When I try the above syntax, I get this error on the first line of the next function that is defined in the template: Connect and share knowledge within a single location that is structured and easy to search. Why is there a fake knife on the rack at the end of Knives Out (2019)? Since there are different stacks for different environments, it isn't really practical for me to copy and paste the ARN into the serverless.yaml file. Did the words "come" and "home" historically rhyme? Already on GitHub? frameworkVersion: ">=1.0.0 <2.0.0" By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Supported functions For the Fn::Join delimiter, you can't use any functions. Short Yaml form !ImportValue; Fn::Join Joins a set of values in a single value based upon the delimiter provided. Is there a way for using exported values as default values ( the default values cannot be hardcoded, they come as exported values from a run of another stack), while providing an option for the users to provide their own values (to create resources). Connect and share knowledge within a single location that is structured and easy to search. Can plants use Light from Aurora Borealis to Photosynthesize? Important: In the template in step 4, use the NetworkStack resource stack as the value for NetworkStackParameter.The NetworkStack value replaces the correct stack name in the corresponding Fn::ImportValue functions.. how to use ImportValue in parameters? - Stack Overflow Can we open this again? How actually can you perform the trick with the "illusion of the party distracting the dragon" like they did it in Vox Machina (animated series)? I tried the above approach and it works. Did the words "come" and "home" historically rhyme? Bug Report : Not be able to use Fn::ImportValue or Ref in the Authorizer section of a File in *.YAML File, ${self:provider.environment.USERPOOL_ARN}, ${self:service}-${opt:stage, self:provider.stage}, ${cf:${self:provider.environment.STACK_NAME}.UserPoolArn}. Does subclassing int to forbid negative integers break Liskov Substitution Principle? Serverless Version: 1.5.0. For example, to count cells in A1:A10 that contain a date greater than a date in B1, you can use a formula like this: = COUNTIFS (A1:A10, ">" & B1) // count dates greater than A1. Any thought ? Successfully merging a pull request may close this issue. Making statements based on opinion; back them up with references or personal experience. Thanks! Note: For examples of import and export templates, see Fn::ImportValue. plugins: Serverless Framework Version you're using: TypeError: functionArn.split is not a function You can easily verify that using the two sample templates: bucket2.yaml (imports EnvType and tries to use it in IsProd condition). Parameters: VPC: Description: VPC ID Type: String Default: Fn::ImportValue: !Sub "$ {NetworkStackNameParameter}-VPC" If I use above way, will get the error: An error occurred (ValidationError) when calling the CreateChangeSet operation: Template format error: Every Default member must be a string. at _.forEach (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\lib\plugins\aws\deploy\compile\events\apiGateway\lib\validate.js:50:36) Are witnesses allowed to give private testimonies? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. CloudFormation protip: use !Sub instead of !Join 503), Mobile app infrastructure being decommissioned, YAML Syntax for ImportValue into CFN Parameter Default, AWS CloudFormation: Combining ImportValue and Sub functions causes error, Enable multi-az in aurora cloud formation, Referencing outputs of a nested stack Error: "the attribute in Fn::ImportValue must not depend on any resources", how to import two exported values in one import in another template in cloudformation, Parameter values are not working in aws cli Cloudformation, No export named vpc-xxxxxx-vpc-id found. To import those values, we use the `Fn::ImportValue` function in the template for the other stacks. If EnvType = dev, then don't deploy it. For the Fn::Join list of values, you can use the following functions: Fn::Base64 Fn::FindInMap Fn::GetAtt Fn::GetAZs Fn::If Fn::ImportValue Fn::Join Fn::Split Fn::Select Fn::Sub Ref The COUNTIF function is designed to apply just one condition. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. CloudFormation: How to use Fn::Import value in conditions? BATCH_JOB_QUEUE: {"Fn::ImportValue":"BatchJobQueue-dev"}. 5. That is a poor set of choices. 3- 'Fn::ImportValue': 'CustomAuthorizerDefaultFunction' works in the environment section of a function definition. You signed in with another tab or window. I worked around this by using cloud formation output in environment variable. Asking for help, clarification, or responding to other answers. In your AWS CloudFormation template, confirm that the Parameters section doesn't contain any intrinsic functions. How to avoid acoustic feedback when having heavy vocal effects during a live performance? Nested Fn::ImportValue in Fn::Sub not working for SAM template #372 at Immediate.Async.drainQueues (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\node_modules\bluebird\js\release\async.js:17:14) Why should you not leave the inputs of unused gates floating with 74LS series logic? at Promise._settlePromise (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\node_modules\bluebird\js\release\promise.js:567:18) By clicking Sign up for GitHub, you agree to our terms of service and at AwsCompileApigEvents.validate (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\lib\plugins\aws\deploy\compile\events\apiGateway\lib\validate.js:41:7) 4 Answers Sorted by: 32 This can also be caused by having a reference inside Fn::ImportValue to a parameter be misnamed. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. to your account, Not be able to use Fn::ImportValue or Ref in the Authorizer section of a File in *.YAML File. The ALB and listener were created in external cloudformation templates, and I'm trying to use an Fn::ImportValue function to import the listener ARN. Why do all e4-c5 variations only have a single name (Sicilian Defence)? "Ref" and "Fn::GetAtt" are the idiomatic way to link resources together with AWS CloudFormation; this should be supported throughout the config IMHO. . Thanks for contributing an answer to Stack Overflow! 'Fn::ImportValue': 'CustomAuthorizerDefaultFunction' functions: myFunction: handler: 'app/endpoints/myFunction/handler.myFunctionHandler' environment: MY_THING: Serverless Framework Version you're using: Stack Trace: edited However, I think there needs to be a discussion about how to do this, as there are multiple options. Dynamic Bindings for CloudFormation Stacks using Fn::ImportValue An error occurred (ValidationError) when calling the CreateChangeSet operation: Template format error: Every Default member must be a string. @aymericaitamer I attempted to use this solution, but I had to let the UserPool be created first. how to verify the setting of linux ntp client? MIT, Apache, GNU, etc.) It's influenced by internal naming and validation logic (check internals). Find centralized, trusted content and collaborate around the technologies you use most. SSH default port not changing (Ubuntu 22.10). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Yes, we're thinking about a global arn parser (see #3212) so that this can be re-used throughout the codebase in a reliable way. https://www.serverless.com/framework/docs/providers/aws/guide/variables/#reference-cloudformation-outputs. However, you can use SSM parameter for as the workaround, something like below. Should I avoid attending certain conferences? at _.forEach (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\lib\plugins\aws\deploy\compile\events\apiGateway\lib\validate.js:42:9) https://www.serverless.com/framework/docs/providers/aws/guide/variables/#reference-cloudformation-outputs, @lukeplausin you're using a heavily outdated version of a Framework, please upgrade. Cloudformation script generates "No subnets found for the default VPC", aws cloudformation use Fn::Join in a list, Optional parameters when using AWS CLI to launch CloudFormation template, CloudFormation throws "Value () for parameter groupId is invalid. Have a question about this project? If so, how did you do it? What is the function of Intel's Total Memory Encryption (TME)? Environment variables defined with CloudFormation method Fn - GitHub Notice we concatenate the ">" operator to the date in B1 . Steps to reproduce the issue: I am not able to define AWS::Serverless::Api resource having nested function ImportValue in Location. privacy statement. CloudFormation: How to use Fn::Import value in conditions? Can you help me solve this theological puzzle over John 1:14? How do I make Cloudformation reprocess a template using a macro when parameters change? at Object.tryCatcher (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\node_modules\bluebird\js\release\util.js:16:23) Do we ever see a hobbit use their natural ability to disappear? In the below example, a blank delimiter is provided as "", thus it will return a value by joining VPC id, string -mydepartmentname- and availability zone name. However, to count cells that contain "this OR that", you can use an array constant and the SUM function like this: = SUM ( COUNTIF ( range,{"red","blue"})) // red or blue. I want to use "PrivateSubnetA", "PrivateSubnetB" as default values if user does not provide data. As per this exported value, I want to deploy one resource in app deployment stack. Now I want to use default values, if the user has not provided values, else use user-provided values. The export value is at risk of not being available in time to be imported by the other child stack. I have tried following three ways, none of them work. ------------------------------------------------------ part of our Yml File---------------- How I can achieve this? I created a simple test. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Stack Overflow for Teams is moving to its own domain! What is this political cartoon by Bob Moran titled "Amnesty" about? Otherwise there are surprises; like again today with the SNS topic arn not able to be Ref'd. What's the best way to roleplay a Beholder shooting with its many rays at a Major Image illusion? Welcome to part 3.7 of this tutorial series on AWS CloudFormation. This can also be caused by having a reference inside Fn::ImportValue to a parameter be misnamed. Hope his helps someone out one day! Since there are different stacks for different environments, it isn't really practical for me to copy and paste the ARN into the serverless.yaml file. Sci-Fi Book With Cover Of A Person Driving A Ship Saying "Look Ma, No Hands! Light bulb as limit, to what is current limited to? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Sign in I worked around this by encoding information into the naming schema. To learn more, see our tips on writing great answers. To learn more, see our tips on writing great answers. I'm trying to wrap my head how this works but having trouble. I had a problem where I needed to get my artifact bucket name from my prerequisite stack, I tried this: turns out you can do this and it will work. For example: Was that the intended function of your solution? Probably the user will have to explicitly state if they want to use a custom authorizer or cognito user pool authorizer. You must specify a string value. There is an IF sentence in /Users/ssdessign/work/forks/serverless/lib/plugins/aws/deploy/compile/events/apiGateway/lib/authorizers.js , line 1204 which tries to figure out which of those two is the case, however this logic fails in the case when there is an Fn::ImportValue. But seems this feature can't be used in Parameters. Couple that I can think of: Closingplease check the comment in the PR for explanation. at Object.gotValue (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\node_modules\bluebird\js\release\reduce.js:157:18) how to verify the setting of linux ntp client? Thank you for the update. An error occurred (ValidationError) when calling the CreateChangeSet In the following example template snippets, Stack A exports VPC security group values and Stack B imports them. Asking for help, clarification, or responding to other answers. As it says, the variable resolves to a non-string value which makes it impossible to construct the correct final string. How to export and import stack output values in CDK? I inherited a template, once, that used join to assemble a JSON string with half a dozen key/value pairs and it was unreadable.I'll omit an example like that because it would be unreadable, but, if you're struggling with join, read on! I believe the issue is caused by overly-strict validation checks within the core codebase. We're open for improvements on that level. For example, if I have the following parameter NetworkStackName defined and I mis-reference it in the Fn::ImportValue statement (as NetworkName ), I will get this error. at arrayEach (C:\Users\KamroozN\AppData\Roaming\npm\node_modules\serverless\node_modules\lodash\lodash.js:537:11) I tried a bunch of different versions of the syntax but couldn't get the ALB ARN to work with a Fn::Import. How to use the Excel COUNTIFS function | Exceljet Why Window Functions Are Not Allowed in WHERE Clauses That is - I changed the code to use poolarn for Cognito User Pool default authorizer, and left arn just for the case of the custom authorizer. For outputs, the value of the Name property of an Export can't use Ref or GetAtt functions that depend on a resource. The ALB and listener were created in external cloudformation templates, and I'm trying to use an Fn::ImportValue function to import the listener ARN. Do we ever see a hobbit use their natural ability to disappear? same values across stacks): Do you use. Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. Fn::ImportValue explained with an example - YouTube You can't use window functions in WHERE, because the logical order of operations in an SQL query is completely different from the SQL syntax. By clicking Sign up for GitHub, you agree to our terms of service and Why bad motor mounts cause the car to shake and vibrate at idle but not when you give it gas and increase the rpms? To avoid the Red Blue combination, we will use the formula =NOT (C6="Red Blue"). What are some tips to improve this product photo? How can I write this using fewer variables? After resolving above, the error you will see will look like this Cannot resolve variable at "provider.iam.role.statements..Resource.0": String value consist of variable which resolve with non-string value.
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