Ansible module for linking to vendor directories

composer-link

#!/usr/bin/env python

from ansible.module_utils.basic import *
import os.path
import json

def main():
    module = AnsibleModule(
        argument_spec = dict(
            dest=dict(required=True),
            lockfile=dict(default="composer.lock"),
            vendor=dict(default="vendor"),
        )
    )

    dest     = module.params['dest']
    lockfile = module.params['lockfile']
    vendor   = module.params['vendor']

    if not os.path.isdir(dest):
        module.fail_json(msg="Destination path '%s' does not exist." % dest)

    try:
        lockfile_handle = open(lockfile)
        data = json.load(lockfile_handle)
        lockfile_handle.close()
    except IOError:
        module.fail_json(msg="lockfile '%s' cannot be opened." % lockfile)

    if not "hash" in data:
        module.fail_json(msg="No hash was found in %s" % lockfile)

    # TODO
    # if vendor exists and is not a symlink to hash, exit (nothing changed)
    # if dest+hash exists, symlink vendor to dest+hash
    # if dest+hash does not exist, create dest+hash, symlink vendor to dest+hash, 
    # 

    module.exit_json(changed=False, hash=data["hash"])

main()