When pointing to --cdk-output with CDKv2 it throws an UnhandledPromiseRejectionWarning

[daknhh]

Command: cfn-dia draw.io --cdk-output cdk.out --output-file $(sed "s/values/diagrams/g;s/.json/.drawio/g" <<< values/david-test.json) --ci-mode --skip-synth

Log:

[creatediagram] (node:73636) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, open 'cdk.out/WAF-DAVID-INT-KY4K140S.assets.template.json' [creatediagram] at Object.openSync (fs.js:498:3) [creatediagram] at Object.readFileSync (fs.js:394:35) [creatediagram] at fromCDK (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/shared/templateParser.js:95:30) [creatediagram] at Object.get (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/shared/templateParser.js:31:16) [creatediagram] at Object.generate (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/graph/MxGenerator.js:243:41) [creatediagram] at Command.<anonymous> (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/commands/draw.io/index.js:37:23) [creatediagram] at Command.listener [as _actionHandler] (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:922:31) [creatediagram] at Command._parseCommand (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:1503:14) [creatediagram] at Command._dispatchSubcommand (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:1443:18) [creatediagram] at Command._parseCommand (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:1460:12) [creatediagram] (Use node --trace-warnings ...to show where the warning was created) [creatediagram] (node:73636) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag--unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2) [creatediagram] (node:73636) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[stefanfreitag]

Same here: I was trying to create a diagram for a stack based on CDK 2.3.0.

The error message I get is

(node:39447) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, open 'cdk.out/my-stack-dev.assets.template.json'
    at Object.openSync (fs.js:462:3)
    at Object.readFileSync (fs.js:364:35)
    at fromCDK (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/shared/templateParser.js:96:30)
    at Object.get (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/shared/templateParser.js:31:16)
    at Object.generate (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/graph/MxGenerator.js:243:41)
    at Command.<anonymous> (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/commands/draw.io/index.js:37:23)
    at Command.listener [as _actionHandler] (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:922:31)
    at Command._parseCommand (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:1503:14)
    at Command._dispatchSubcommand (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:1443:18)
    at Command._parseCommand (/usr/local/lib/node_modules/@mhlabs/cfn-diagram/node_modules/commander/index.js:1460:12)
(node:39447) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:39447) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

In the cdk.out directory I have

cdk.out manifest.json my-stack-dev.assets.json my-stack-dev.template.json tree.json

[obiwabrakenobi]

you might workaround with something like cdk synth > template.yaml and use the file as input like cfn-dia ... template.yaml that works for cdk v2 as well but the names look weird

[jreijn]

The same for me. From what I noticed you can just do cfn-dia d -t cdk.out/YOUR_STACK.template.json and it will generate the diagram.

[ljacobsson]

Sorry for the very late attention on this.

Can you please try to see if the latest release (1.1.34) fixes this. Leaving this open until I get thumbs up. Have tested with this CDK project and was able to reproduce the error and verified that the fix worked.

[RachelleJanssen]

Still getting this issue, just updated to the latest build. I was using CDK pipelines. I temporarily commented the pipeline and directly put my stack in the /bin file, then it worked. Obviously this is not ideal because it means altering CDK (and what it's going to deploy) in order to generate a diagram.

It's a CDK pipeline that deploys 2 lambdas (a simple hello world and goodbye world) in 2 accounts, each in 2 regions. When I run the rool I get a similar error as above. After cdk synth I was able to give the template path from the various folders the cdk.out folder

[ljacobsson]

@RachelleJanssen do you have a link to the project's repo?