scripts/contrib/build-perf-test-wrapper.sh: Improve interaction with autobuilder automation

This tweaks the script to:

* Ensure directories exist and can be written to
* Allow the downloads directory to be specified
* Error early if the phantomjs or optipng dependencies are not installed
* Allow the location of the globalres.log file to be specified

This means that the main build directory can be destroyed and any state
from the script is stored elsewhere allowing it to be triggered
automatically from the autobuilder infrastructure.

(From OE-Core rev: 1de5fbd484e6a747ae6419ccc89d8c2911b9706b)

(From OE-Core rev: d6f00d9d89f62e60eaa87abf89477ed7865e2859)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/contrib/build-perf-test-wrapper.sh

@@ -33,7 +33,9 @@ Optional arguments:
   -c COMMITISH      test (checkout) this commit, <branch>:<commit> can be
                     specified to test specific commit of certain branch
   -C GIT_REPO       commit results into Git
+  -d DOWNLOAD_DIR   directory to store downloaded sources in
   -E EMAIL_ADDR     send email report
+  -g GLOBALRES_DIR  where to place the globalres file
   -P GIT_REMOTE     push results to a remote Git repository
   -R DEST           rsync reports to a remote destination
   -w WORK_DIR       work dir for this script
@@ -51,19 +53,26 @@ get_os_release_var () {
 commitish=""
 oe_build_perf_test_extra_opts=()
 oe_git_archive_extra_opts=()
-while getopts "ha:c:C:E:P:R:w:x" opt; do
+while getopts "ha:c:C:d:E:g:P:R:w:x" opt; do
     case $opt in
         h)  usage
             exit 0
             ;;
-        a)  archive_dir=`realpath -s "$OPTARG"`
+        a)  mkdir -p "$OPTARG"
+            archive_dir=`realpath -s "$OPTARG"`
             ;;
         c)  commitish=$OPTARG
             ;;
-        C)  results_repo=`realpath -s "$OPTARG"`
+        C)  mkdir -p "$OPTARG"
+            results_repo=`realpath -s "$OPTARG"`
+            ;;
+        d)  download_dir=`realpath -s "$OPTARG"`
             ;;
         E)  email_to="$OPTARG"
             ;;
+        g)  mkdir -p "$OPTARG"
+            globalres_dir=`realpath -s "$OPTARG"`
+            ;;
         P)  oe_git_archive_extra_opts+=("--push" "$OPTARG")
             ;;
         R)  rsync_dst="$OPTARG"
@@ -86,6 +95,17 @@ if [ $# -ne 0 ]; then
     exit 1
 fi
 
+if [ -n "$email_to" ]; then
+    if ! [ -x "$(command -v phantomjs)" ]; then
+        echo "ERROR: Sending email needs phantomjs."
+        exit 1
+    fi
+    if ! [ -x "$(command -v optipng)" ]; then
+        echo "ERROR: Sending email needs optipng."
+        exit 1
+    fi
+fi
+
 # Open a file descriptor for flock and acquire lock
 LOCK_FILE="/tmp/oe-build-perf-test-wrapper.lock"
 if ! exec 3> "$LOCK_FILE"; then
@@ -146,11 +166,18 @@ if [ -z "$base_dir" ]; then
 fi
 echo "Using working dir $base_dir"
 
+if [ -z "$download_dir" ]; then
+    download_dir="$base_dir/downloads"
+fi
+if [ -z "$globalres_dir" ]; then
+    globalres_dir="$base_dir"
+fi
+
 timestamp=`date "+%Y%m%d%H%M%S"`
 git_rev=$(git rev-parse --short HEAD)  || exit 1
 build_dir="$base_dir/build-$git_rev-$timestamp"
 results_dir="$base_dir/results-$git_rev-$timestamp"
-globalres_log="$base_dir/globalres.log"
+globalres_log="$globalres_dir/globalres.log"
 machine="qemux86"
 
 mkdir -p "$base_dir"
@@ -161,7 +188,7 @@ auto_conf="$build_dir/conf/auto.conf"
 echo "MACHINE = \"$machine\"" > "$auto_conf"
 echo 'BB_NUMBER_THREADS = "8"' >> "$auto_conf"
 echo 'PARALLEL_MAKE = "-j 8"' >> "$auto_conf"
-echo "DL_DIR = \"$base_dir/downloads\"" >> "$auto_conf"
+echo "DL_DIR = \"$download_dir\"" >> "$auto_conf"
 # Disabling network sanity check slightly reduces the variance of timing results
 echo 'CONNECTIVITY_CHECK_URIS = ""' >> "$auto_conf"
 # Possibility to define extra settings