ceph-ansible-nightly: fix find for latest stable tag

Simplify the code to find the latest tag.
Docker Hub API when queried only returns the 10 first tags. This is
annoying but we have to:

* count the number of pages
* query all the tags from each page
* when we find one tag, we pick the first one from the variable

Signed-off-by: Sébastien Han <seb@redhat.com>

diff --git a/ceph-ansible-nightly/build/build b/ceph-ansible-nightly/build/build
index b8f500cfac2cbf43f718a80147e18961a208a319..8259930ac518587633dd2862719f0399e67dc8e6 100644 (file)
--- a/ceph-ansible-nightly/build/build
+++ b/ceph-ansible-nightly/build/build
@@ -15,44 +15,19 @@ WORKDIR=$(mktemp -td tox.XXXXXXXXXX)
 #############
 function count_tag_pages {
   sudo yum -y install jq
-  for i in $(seq 1 10000); do
-    rc=$(curl -s -o /dev/null -w "%{http_code}" "https://registry.hub.docker.com/v2/repositories/ceph/daemon/tags/?page=${i}")
-    if [[ "$rc" != "200" ]]; then
-      break
-    else
-      total_page=$((total_page+1))
-    fi
-  done
-}
-
-function find_latest_jewel_tag {
-  for page in $(seq 1 $total_page); do
-    tag=$(curl -s "https://registry.hub.docker.com/v2/repositories/ceph/daemon/tags/?page=$page" | jq '."results"[] | select((.name | contains("stable")) and (.name | contains("jewel-ubuntu-16.04-x86_64"))) | .name')
-    tags="${tags} ${tag}"
-  done
-  # build array
-  array_jewel=()
-  for i in $tags; do
-    array_jewel+=("$i")
-  done
-  IFS=$'\n' sorted_jewel=($(sort <<<"${array_jewel[*]}"))
-  unset IFS
-  LAST_JEWEL_STABLE_TAG="${sorted_jewel[-1]}"
+  tag_count=$(curl -s "https://registry.hub.docker.com/v2/repositories/ceph/daemon/tags/" | jq '.count')
+  total_pages=$((tag_count / 10))
 }
 
-function find_latest_luminous_tag {
-  for page in $(seq 1 $total_page); do
-    tag=$(curl -s "https://registry.hub.docker.com/v2/repositories/ceph/daemon/tags/?page=$page" | jq '."results"[] | select((.name | contains("stable")) and (.name | contains("luminous-ubuntu-16.04-x86_64"))) | .name')
-    tags="${tags} ${tag}"
-  done
-  # build array
-  array_luminous=()
-  for i in $tags; do
-    array_luminous+=("$i")
+function find_latest_tag {
+  release="$1"
+  for page in $(seq 1 $total_pages); do
+    tag=$(curl -s "https://registry.hub.docker.com/v2/repositories/ceph/daemon/tags/?page=$page" | jq ".\"results\"[] | select((.name | contains(\"stable\")) and (.name | contains(\"${release}-ubuntu-16.04-x86_64\"))) | .name")
+    if [ -n "$tag" ]; then
+      echo "$tag" | cut -d '"' -f 2
+      return
+    fi
   done
-  IFS=$'\n' sorted_luminous=($(sort <<<"${array_luminous[*]}"))
-  unset IFS
-  LAST_LUMINOUS_STABLE_TAG="${sorted_luminous[-1]}"
 }
 
 function run_tox {
@@ -75,6 +50,6 @@ clear_libvirt_networks
 restart_libvirt_services
 update_vagrant_boxes
 count_tag_pages
-find_latest_jewel_tag
-find_latest_luminous_tag
+LAST_JEWEL_STABLE_TAG=$(find_latest_tag jewel)
+LAST_LUMINOUS_STABLE_TAG=$(find_latest_tag luminous)
 run_tox