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vault-plugin-secrets-helloworld

This is a plugin backend for HashiCorp Vault that provides a minimal and trivial but relatively complete example of a secrets engine plugin to serve as a basic model for development of actual functional plugins.

This code was patterned heavily after the official gcpkms secrets plugin.

For more details about how Vault plugins work, see the plugin architecture documentation.

Building

Running make or go build ./cmd/vault-plugin-secrets-helloworld in the root directory of this project should generate a vault-plugin-secrets-helloworld binary.

Registration

To register this plugin with Vault, first copy the binary to the plugin directory configured for your running instance of Vault, then register the plugin with a command similar to this:

$ vault plugin register \
      -command=vault-plugin-secrets-helloworld \
      -sha256=$( sha256sum vault-plugin-secrets-helloworld |cut -d' ' -f1 ) \
      helloworld-plugin

See the plugin registration docs for more details.

Usage

Once the plugin is registered as above, you can enable it on a given path:

$ vault secrets enable \
      -path=helloworld \
      -plugin-name=helloworld-plugin \
      -description="Example of the helloworld plugin" \
      plugin

Then you can configure a target:

$ vault write helloworld/targets/everyone display_name="all y'all"

And configure a salutation:

$ vault write helloworld/config salutation=Howdy

And finally read a greeting:

$ vault read -field message helloworld/greet/everyone
Howdy, all y'all!

Use vault path-help helloworld to see full documentation on the options available on each endpoint.

Testing

You can interactively test this plugin in development mode using the scripts in the test directory:

Run make test in one shell window. This will start Vault in dev mode and register and enable the plugin at helloworld/.

Then in another shell window, run source test/env.sh. This will set VAULT_ADDR and VAULT_TOKEN appropriately to interact with the test server. Then, you can try such commands as:

$ vault path-help helloworld

$ vault write helloworld/targets/france display_name="tout le monde"

$ vault write helloworld/config salutation=Bonjour

$ vault read helloworld/greet/france

License

This code is licensed under the Mozilla Public License (MPL) 2.0. See the LICENSE file for more information.