Merge pull request #464 from concourse/all_branches_flag

add all_branches as get.param to fetch all branches during cloning

Author: taylorsilva

README.md

@@ -504,6 +504,14 @@ correct key is provided set in `git_crypt_key`.
         describe</code></a>. Defaults to <code>--always --dirty --broken</code>.
     </td>
   </tr>
+  <tr>
+    <td><code>all_branches</code><br/><i>Optional</i></td>
+    <td>
+        If <code>true</code> the flag <code>--single-branch</code> will be
+        excluded and all branches will be fetched from the repository. If
+        <code>false</code> or not specified, only a single branch (either
+        <code>source.branch</code> or the default branch) will be fetched. </td>
+  </tr>
 </table>
 
 #### GPG signature verification

assets/in

@@ -62,6 +62,7 @@ short_ref_format=$(jq -r '(.params.short_ref_format // "%s")' <<< "$payload")
 timestamp_format=$(jq -r '(.params.timestamp_format // "iso8601")' <<< "$payload")
 describe_ref_options=$(jq -r '(.params.describe_ref_options // "--always --dirty --broken")' <<< "$payload")
 search_remote_refs_flag=$(jq -r '(.source.search_remote_refs // false)' <<< "$payload")
+all_branches=$(jq -r '(.params.all_branches // false)' <<< "$payload")
 
 # If params not defined, get it from source
 if [ -z "$fetch_tags" ] || [ "$fetch_tags" == "null" ]  ; then
@@ -108,7 +109,12 @@ if [ "$disable_git_lfs" == "true" ]; then
   export GIT_LFS_SKIP_SMUDGE=1
 fi
 
-git clone --progress --single-branch $depthflag $uri $branchflag $destination $tagflag $nocheckoutflag
+singlebranchflag="--single-branch"
+if [ "${all_branches,,}" == "true" ]; then
+  singlebranchflag=""
+fi
+
+git clone --progress $singlebranchflag $depthflag $uri $branchflag $destination $tagflag $nocheckoutflag
 
 cd $destination
 

assets/in_schema.json

@@ -9,5 +9,6 @@
   "clean_tags": "",
   "short_ref_format": "",
   "timestamp_format": "",
-  "describe_ref_options": ""
+  "describe_ref_options": "",
+  "all_branches": ""
 }

test/get.sh

@@ -102,6 +102,19 @@ it_can_get_from_url_at_override_branch() {
   test "$(git -C $dest rev-parse HEAD)" = $ref
 }
 
+it_can_get_from_url_with_all_branches() {
+  local repo=$(init_repo)
+  local ref=$(make_commit $repo)
+  local dest=$TMPDIR/destination
+
+  get_uri_with_all_branches $repo "master" $dest | jq -e "
+    .version == {ref: $(echo $ref | jq -R .)}
+  "
+
+  git -C $dest show-ref --verify refs/remotes/origin/master
+  git -C $dest show-ref --verify refs/remotes/origin/bogus
+}
+
 it_preserves_git_config_in_local_repository() {
   local repo=$(init_repo)
   local ref=$(make_commit $repo)
@@ -1130,6 +1143,7 @@ run it_can_get_from_url_at_ref
 run it_can_get_from_url_at_branch
 run it_can_get_from_url_only_single_branch
 run it_can_get_from_url_at_override_branch
+run it_can_get_from_url_with_all_branches
 run it_preserves_git_config_in_local_repository
 run it_can_get_from_url_with_sparse_paths
 run it_omits_empty_branch_in_metadata

test/helpers.sh

@@ -1107,6 +1107,18 @@ get_uri_with_fetch_branches() {
   }" | ${resource_dir}/in "$dest" | tee /dev/stderr
 }
 
+get_uri_with_all_branches() {
+  jq -n "{
+    source: {
+      uri: $(echo $1 | jq -R .),
+      branch: $(echo $2 | jq -R .),
+    },
+    params: {
+      all_branches: \"true\"
+    }
+  }" | ${resource_dir}/in "$3" | tee /dev/stderr
+}
+
 put_uri() {
   jq -n "{
     source: {