use a temp directory for the emulator (#1494)

Author: demoray

.github/workflows/build.yml

@@ -100,7 +100,7 @@ jobs:
         if: ${{ always() }}
 
   test-integration:
-    name: Integration Tests
+    name: Emulator Tests
     runs-on: ubuntu-20.04
     needs:
       - msrv

.gitignore

@@ -13,11 +13,5 @@ sample/
 *.swp
 *.swo
 *.vim
-__azurite*.json
-__blobstorage__
-__queuestorage__
 .idea/
-*.iml
-*.bat
-*.ps1
 .env

eng/scripts/emulator_tests.sh

@@ -1,14 +1,50 @@
 #!/bin/bash
 
 set -eux -o pipefail
-cd $(dirname ${BASH_SOURCE[0]})/../../
+BUILD=${1:-stable}
 
+cd $(dirname ${BASH_SOURCE[0]})/../../
 ./eng/scripts/github-disk-cleanup.sh
 
-BUILD=${1:-stable}
+# get the nested list of sub-processes for a given set of pids
+function subprocesses {
+    for P in $@; do
+        echo ${P}
+        for C in $(pgrep -P ${P}); do
+            subprocesses ${C}
+        done
+    done
+}
 
-npm install [email protected]
+# stop all of the subprocesses for a given set of pids
+function stop_subprocesses {
+    # sort pids numerically, and in reverse
+    PIDS=$(subprocesses $$ | sort -nr)
+    for P in ${PIDS}; do
+        if [ ${P} == $$ ]; then
+            continue
+        fi
+        kill -9 ${P} || echo "stopping ${P} failed"
+    done
+}
+
+# at termination, we want to cleanup the temp directory and stop all
+# subprocesses (azurite)
+TMP=$(mktemp -d)
+function cleanup {
+    stop_subprocesses || true
+    rm -rf ${TMP} || true
+}
+trap cleanup EXIT
+
+BASE_DIR=$(pwd)
+cd ${TMP}
+npm install [email protected]
 npx azurite &
 
+# wait for azurite to start
+sleep 5
+
+cd ${BASE_DIR}
 rustup update --no-self-update ${BUILD}
 cargo +${BUILD} test --features test_integration