ci(cronet): check file exit before download

.github/scripts/cronet.sh

@@ -1,10 +1,21 @@
-#bin/sh
+#!/usr/bin/env bash
+
 echo "fetch release info from https://chromiumdash.appspot.com ..."
 
 branch="Stable"
 
 lastest_cronet_version=`curl -s "https://chromiumdash.appspot.com/fetch_releases?channel=$branch&platform=Android&num=1&offset=0" | jq .[0].version -r`
 echo "lastest_cronet_version: $lastest_cronet_version"
+#lastest_cronet_version=100.0.4845.0
+
+function checkVersionExit() {
+    local jar_url="https://storage.googleapis.com/chromium-cronet/android/$lastest_cronet_version/Release/cronet/cronet_api.jar"
+    statusCode=$(curl -s -I -w %{http_code} "$jar_url" -o /dev/null)
+    if [ $statusCode == "404" ];then
+        echo "storage.googleapis.com return 404 for cronet $lastest_cronet_version"
+        exit
+    fi
+}
 
 path=$GITHUB_WORKSPACE/gradle.properties
 current_cronet_version=`cat $path | grep CronetVersion | sed s/CronetVersion=//`
@@ -13,9 +24,11 @@ echo "current_cronet_version: $current_cronet_version"
 if [[  $current_cronet_version == $lastest_cronet_version ]];then
     echo "cronet is already latest"
 else
+    checkVersionExit
     sed -i s/CronetVersion=.*/CronetVersion=$lastest_cronet_version/ $path
     sed "15a* 更新cronet: $lastest_cronet_version" -i $GITHUB_WORKSPACE/app/src/main/assets/updateLog.md
     echo "start download latest cronet"
     chmod +x gradlew
     ./gradlew app:downloadCronet
 fi
+