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Application developer's cookbook
If you have not written murano packages before, start from the
existing Step-by-Step <step-by-step> guide. It contains
general information about murano packages development process.
Additionally, see the MuranoPL reference <murano-pl>.
Load applications from a local directory
Normally, whenever you make changes to your application, you have to
package it, re-upload the package to the API, and delete the old package
from the API. This makes developing and testing murano applications
troublesome and time-consuming. Murano-engine provides a way to speed up
the edit-upload-deploy loop. This can be done with the
load_packages_from option. Murano-engine examines any
directories mentioned in this option before accessing the API.
Therefore, you do not even need to package the application into a ZIP
archive and any changes you make are instantly available to the engine,
if you do not plan to check or change the application UI. To check your
application's appearance in the OpenStack dashboard, upload the
application for the first run. Additionally, re-upload the package using
the OpenStack dashboard or CLI each time you update the application
UI.
To load an application from a local directory, modify the
load_packages_from parameter in murano config
[engine] section.
[engine]
...
load_packages_from = /path/to/murano/applications
...Note
The murano-engine scans the directory structure and seeks application
manifests. Therefore, you can point the load_packages_from
parameter to a cloned version of the murano-apps repository.
Deploy environment using CLI
The standard way to deploy an application in murano is by using the
murano dashboard (OpenStack dashboard plug-in). However, if the
OpenStack dashboard is not available or some sort of automation is
required, murano provides the capability to deploy environments through
CLI. It is a powerful tool that allows users and application developers
make arbitrary changes to apps object-model. This can be useful in early
stages of application development to experiment with different object
models of an application. You can read more about it in Deploying environments using CLI <deploying-using-cli>
Application unit test framework
An application unit test framework was created to make development process easier. With this framework you can check different scenarios of application deployment without running real deployments.
For more information about application unit tests, see Application unit tests <app-unit-tests>.