Speed up copying OpenShift examples

* The `copy` module does not scale to hundreds of files
* Replace `copy` with `unarchive`

Create a temp dir locally to tar all the OpenShift examples into. Make
the dest dir on the remote side, drop examples in place with the
`unarchive` module.

1 files changed, 40 insertions, 3 deletions

diff --git a/roles/openshift_examples/tasks/main.yml b/roles/openshift_examples/tasks/main.yml
index fb10188f2..e9966d735 100644
--- a/roles/openshift_examples/tasks/main.yml
+++ b/roles/openshift_examples/tasks/main.yml
@@ -1,9 +1,46 @@
 ---
-- name: Copy openshift examples
-  copy:
-    src: "examples/{{ content_version }}/"
+######################################################################
+# Copying Examples
+#
+# We used to use the copy module to transfer the openshift examples to
+# the remote. Then it started taking more than a minute to transfer
+# the files. As noted in the module:
+#
+#   "The 'copy' module recursively copy facility does not scale to
+#   lots (>hundreds) of files."
+#
+# The `synchronize` module is suggested as an alternative, we can't
+# use it either due to changes introduced in Ansible 2.x.
+- name: Create local temp dir for OpenShift examples copy
+  local_action: command mktemp -d /tmp/openshift-ansible-XXXXXXX
+  become: False
+  register: copy_examples_mktemp
+  run_once: True
+
+- name: Create tar of OpenShift examples
+  local_action: command tar -C "{{ role_path }}/files/examples/{{ content_version }}/" -cvf "{{ copy_examples_mktemp.stdout }}/openshift-examples.tar" .
+  become: False
+  register: copy_examples_tar
+
+- name: Create the remote OpenShift examples directory
+  file:
+    dest: "{{ examples_base }}"
+    state: directory
+    mode: 0755
+
+- name: Unarchive the OpenShift examples on the remote
+  unarchive:
+    src: "{{ copy_examples_mktemp.stdout }}/openshift-examples.tar"
     dest: "{{ examples_base }}/"
 
+- name: Cleanup the OpenShift Examples temp dir
+  become: False
+  local_action: file dest="{{ copy_examples_mktemp.stdout }}" state=absent
+
+# Done copying examples
+######################################################################
+# Begin image streams
+
 - name: Modify registry paths if registry_url is not registry.access.redhat.com
   shell: >
     find {{ examples_base }} -type f | xargs -n 1 sed -i 's|registry.access.redhat.com|{{ registry_host | quote }}|g'