[GitHub] [flink] gaoyunhaii commented on a change in pull request #10951: [FLINK-15701][Travis] Retries when uploading to transfer.sh fails

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gaoyunhaii commented on a change in pull request #10951: [FLINK-15701][Travis] Retries when uploading to transfer.sh fails
URL: https://github.com/apache/flink/pull/10951#discussion_r370973068
 
 

 ##########
 File path: tools/travis_watchdog.sh
 ##########
 @@ -132,8 +135,23 @@ upload_artifacts_s3() {
 	fi
 
 	# upload to https://transfer.sh
-	echo "Uploading to transfer.sh"
-	curl --upload-file $ARTIFACTS_FILE --max-time 60 https://transfer.sh
+	echo "Uploading to transfer.sh, maximum retries is ${TRANSFER_UPLOAD_MAX_RETRIES}"
+	for i in $(seq 1 ${TRANSFER_UPLOAD_MAX_RETRIES});do
+		url_or_error=$(curl --upload-file $ARTIFACTS_FILE --max-time 60 https://transfer.sh)
+		echo ${url_or_error}
+
+		if grep -q "^http" <<< ${url_or_error};then
+			# Check if the uploaded file can be accessed successfully
+			access_response=$(curl --max-time 60 -o /dev/null -w "%{http_code}" -H "Accept: text/html" ${url_or_error} 2>/dev/null)
+			if [[ "$access_response" = "200" ]];then
+				break
+			fi
+		fi
+
+		if [[ "$i" -lt "$TRANSFER_UPLOAD_MAX_RETRIES" ]];then
+			echo "Failed to upload to transfer.sh and will retry..."
+		fi
+	done
 
 Review comment:
   According to curl's man page, the native retry mechanism should works for response code 4xx or 500 used by transfer.sh (according to [the server's source code](https://github.com/dutchcoders/transfer.sh/blob/2e33f7c7163c9b804e626a5f9ffc0b24b1510ca2/server/handlers.go) and the observation yesterday for failed uploading) , and it will be simpler. Have updated the PR accordingly. Very thanks for the tips. 👍  

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