Switch projects with ease.
Project archer is a program that allows easy switching between different things such as projects, servers, application servers by changing the current shell.
pip3 install project-archer
In order to define a new type of a resource, let’s say a project, you need first to configure in your .bashrc the following:
eval "$(archer project)"
This defines a new function in the shell called project. Using this command you’re able to manage the projects, as well as changing to the current one.
i.e. on my machine:
Available projects: - mopyx.yml: mopyx - gsb.yml: Germanium Selector Builder ... - lic.yml: Germanium Licenses - gsr.yml: Germanium Star - Runner Current project: <none>
In order to create a new project just run:
project -n test
This opens the currently configured editor in the $EDITOR shell variable, and in there define what happens when switching to that project. This file is created in ~/.archer/projects/test.yml
config: name: Some descriptive name of your project layouts: - maven exports: VAR1: value requires: - JAVA_HOME commands: command1: | ls -l ... command2: | # do something else pwd activate: | # this script runs only once after this project is selected .. deactivate: | # this script runs when switching to another project ..
Layouts have the same structure, and hold common activate, deactivate, exports and commands that are used over multiple projects. By just pointing to the layout all the scripts are being mixed into the current project definition. Having a requires enforces some environment variables to be present before switching to the other project.
Layouts have the same structure, except they reside in ~/.archer/projects/layouts/*.yml.
The variables that are exposed into the exports are exported in the current shell.
Each of the commands is wrapped into a shell function and available for execution.
Example Maven Layout
layout: name: maven requires: [ PROJECT_HOME ] exports: PROJECT_BUILD_FOLDER: target/ MAVEN_OPTS: -Xmx2048m commands: build: | CURRENT_FOLDER=$(pwd) cd $PROJECT_HOME mvn install $@ $EXTRA_MAVEN_PARAMS cd $CURRENT_FOLDER clean: | CURRENT_FOLDER=$(pwd) cd $PROJECT_HOME mvn clean $@ $EXTRA_MAVEN_PARAMS cd $CURRENT_FOLDER test: | CURRENT_FOLDER=$(pwd) cd $PROJECT_HOME mvn test $@ $EXTRA_MAVEN_PARAMS cd $CURRENT_FOLDER cdproj: | cd $PROJECT_HOME rebuild: | clean && build $@
And a sample project let’s say called lic.yml:
config: name: Germanium Licenses layouts: - maven exports: PROJECT_HOME: /home/raptor/projects/germanium-license activate: | cdproj
When calling project lic, the project gets activated, our current folder gets automatically changed to /home/raptor/projects/germanium-license, and in the current shell we have now defined the commands, build, clean, test, cdproj and rebuild that execute from any folder we’re in the maven builds.
To have another maven project, means now just having another file pointing to the different PROJECT_HOME.
The commands are defined per domain of a problem, and when switching to another project, the old commands, and all associated environment variables are undefined.
This also makes sense to start combining them, for example having a server and a project definition and testing two projects against tow application servers becomes:
project A rebuild serverstop # we stop whatever tomcat my be active server tomcat7 redeploy && serverstart # test on tomcat 7 serverstop # we stop the current tomcat server tomcat8 redeploy && serverstart # test on tomcat 8 serverstop # we stop the current tomcat # we go now on testing project B project B rebuild server tomcat7 redeploy && serverstart # test on tomcat 7 serverstop # we stop the current tomcat server tomcat8 redeploy && serverstart # test on tomcat 8
Whenever in doubt a call to either project or server shows the list of available servers, and projects, and the active server and project.
Note that everything becomes far more easier, since we don’t need to move around war files, search for running tomcats, and restarting services manually, cleaning up old things. etc.
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