Ability to run clone operation i the foreground

[mrfelton]

As part of our CI setup, we run something like this:

if curl -s --head  --request GET http://$CIRCLE_BRANCH-$PANTHEON_SITE_NAME.gotpantheon.com | grep "404 Unknown site!" > /dev/null; then
  drush pantheon-site-environment-create $PANTHEON_SITE_UUID $CIRCLE_BRANCH --source=$PANTHEON_SOURCE
  drush pantheon-site-environment-lock $SITE_UUID $CIRCLE_BRANCH $PANTHEON_ENV_USERNAME $PANTHEON_ENV_PASSWORD
else
  drush pantheon-site-clone $PANTHEON_SITE_UUID $PANTHEON_SOURCE $CIRCLE_BRANCH --db -y
fi

We are checking wether an environment already exists for the branch and if not we create it. If it does already exists we clone a fresh database onto it.

In the case where we create the environment using pantheon-site-environment-create the process waits until the environment has actually been created before moving on - which is what we want.

However, in the case pantheon-site-clone the process ends immediately, before pantheon actually cloned the environment. The problem with this is any any attempts to run commands or tests against the freshly cloned environment fail, as the database is still in the process of being created.

Any way to get psite-clone to work in the same way as psite-ecreate (in the foreground)?

[joshkoenig]

Hey Tom,

This is definitely possible, and will become even easier with some of the behind the scenes changes that are being done to make it simpler and more precise to externally track individual job status.

In the short term it's feasible to add a call in to terminus_job_poll():

https://github.com/pantheon-systems/terminus/blob/master/terminus.drush.inc#L1533

Which would look for the 'clone_db_from_' . $env_source . '_to_' . $new_environment) "slot".

[mikevanwinkle]

perhaps we should do this with a --wait flag so as not to disrupt any existing user experiences.

[joshkoenig]

This should be easy if we tap into the terminus_workflow_poll() function that was recently added:

https://github.com/pantheon-systems/terminus/blob/master/terminus.drush.inc#L1804