Retry git clone in scripts

Sometimes git cloning fails while trying to unittest
or build an image. This patch adds a function that
retries the clone on failure five times, waiting five
seconds between attempts.

Change-Id: I179ee242eafcad508f99c09f0aaab9f4b4ee054b

contrib/common/utils

@@ -157,3 +157,18 @@ function test_public_repo () {
     fi
     return 0
 }
+
+function git_clone_with_retry () {
+  local GIT_REPO=$1
+  local DESTINATION=$2
+  shift; shift
+  local SINGLEBRANCH=$1
+
+  RETRIES=0
+  until [ $RETRIES -ge 5 ]; do
+    rm -rf $DESTINATION
+    PRUN git clone $SINGLEBRANCH $GIT_REPO $DESTINATION && break
+    RETRIES=$[$RETRIES+1]
+    sleep 5
+  done
+}

contrib/lp-cedarish/docker/build-app

@@ -111,7 +111,7 @@ if [ -d "$APP_DIR/build" ] ; then
     fi
   fi
 else
-  PRUN git clone $GIT $APP_DIR/build
+  git_clone_with_retry $GIT $APP_DIR/build
 fi
 
 # If languagepack is 'auto', build the application slug

contrib/lp-cedarish/docker/build-lp

@@ -55,7 +55,7 @@ TMP_LP_DIR=/tmp/apps/$TENANT/$GIT_CHECKSUM
 PRUN mkdir -p $TMP_LP_DIR
 
 TLOG ===== Cloning repo
-PRUN git clone $GIT $TMP_LP_DIR/build
+git_clone_with_retry $GIT $TMP_LP_DIR/build
 [[ $? != 0 ]] && TLOG Git clone failed. Check repo $GIT && exit 1
 
 if [ -d "$TMP_LP_DIR/build" ] ; then

contrib/lp-cedarish/docker/unittest-app

@@ -117,11 +117,11 @@ if ! (test_public_repo $GIT); then
 fi
 
 if [[ $COMMIT_SHA ]]; then
-  PRUN git clone $GIT $APP_DIR/code
+  git_clone_with_retry $GIT $APP_DIR/code
   cd $APP_DIR/code
   PRUN git checkout -B solum_testing $COMMIT_SHA
 else
-  PRUN git clone --single-branch $GIT $APP_DIR/code
+  git_clone_with_retry $GIT $APP_DIR/code --single-branch
   cd $APP_DIR/code
 fi
 

contrib/lp-chef/docker/unittest-app

@@ -78,11 +78,11 @@ if ! (test_public_repo $GIT); then
 fi
 
 if [[ $COMMIT_SHA ]]; then
-  PRUN git clone $GIT $APP_DIR/code
+  git_clone_with_retry $GIT $APP_DIR/code
   cd $APP_DIR/code
   PRUN git checkout -B solum_testing $COMMIT_SHA
 else
-  PRUN git clone --single-branch $GIT $APP_DIR/code
+  git_clone_with_retry $GIT $APP_DIR/code --single-branch
   cd $APP_DIR/code
 fi
 

contrib/lp-dockerfile/docker/build-app

@@ -39,7 +39,7 @@ PRUN mkdir -p $APP_DIR
 add_ssh_creds "$GIT_PRIVATE_KEY" "$APP_DIR"
 
 [[ -d $APP_DIR/build ]] && rm -rf $APP_DIR/build
-PRUN git clone $GIT $APP_DIR/build
+git_clone_with_retry $GIT $APP_DIR/build
 
 remove_ssh_creds "$GIT_PRIVATE_KEY"