Composer v0.19.3

Welcome to Hyperledger Composer v0.19.3. This release continues to build on the codebase to deliver the best experience yet when developing your business networks 👌

Features/Enhancements

✨ Runtime

• #3914 provides an enhancement to ACL validation error messages

Bug Fixes

🐞 Runtime

• #3897 enforces a prompt for the REST server for whether API key security (added in 0.19.2) should be enabled and for the key value to use.
• #3903, #3905, #3916 and #3798 relate to housekeeping around Composer dependancies

🐞 Playground

• #3917 is an update to the Playground busy status display
• #3919 ensures the correct Playground admin card is used for each available business network

🐞 Documentation

• #3860 updates the tutorial documentation to reflect the naming convention for the Composer dev-servers
• #3924 ensures that search results may be reached

Notes

⚠️ If using the Composer tooling to create a Hyperledger Fabric development server, this will now be creating a v1.1.0 server by default. If you are using Composer v0.16.x, you will need to use Fabric v1.0.x, and you must set an environment variable via export FABRIC_VERSION=hlfv1 when using the Hyperledger Fabric development servers provided by Composer.

⚠️ If you have not specified a version in your npm or docker commands when pulling Composer binaries, and you need to keep using Composer v0.16.x, then you *must specify the version number:

• npm install -g composer-cli@0.16.6
• docker pull hyperledger/composer-cli:0.16.6

We strongly suggest that you migrate to Composer v0.19.x instead, but we understand that existing projects may need to stick with Composer v0.16.x for the time being.

⚠️ Business Network Cards are not transferable between v0.16.x and v0.17.x onwards. It will be necessary to manually clear your card store in order to use a different version. Please note that the CLI command to delete a named card will not work correctly if targeting a named card that was created from a different version.

⚠️ The Composer Tools is now setting up a Fabric v1.1 network. Unfortunately only Composer v0.18.2 and above are (and will be) compatible with this alpha driver. There are multiple support splits across differing Fabric levels, so please be careful with what versions are being used:

• v0.18.2, v0.19.0 and above are compatible with the Fabric 1.1.0 driver only
• v0.18.0 -> v0.18.1 are compatible with the Fabric RC1 driver only
• v0.17.3 -> v0.17.6 are compatible with Fabric alpha driver only
• v0.17.0 -> v0.17.2 are compatible with Fabric preview driver only

⚠️ The is a change in the business network lifecycle administration, and business network card commands between v0.18.2 and v0.19.0

Conga Comics

Last week we saw the BlockNorris origin story 😍 ... now we get to see what our resident artist @EdMoffatt has in the next edition of CongaComics. You've skipped to the comic already haven't you? I guess I should just stop typ

Missed out on a Conga Comic, or want to catch up with them all? Fear not, you can view the complete Conga Comic collection at https://congacomic.tumblr.com