feat: init project

README.md

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+# Introduction
+
+This is a quick start script that collects system metrics such as CPU and memory usage, and sends them to GreptimeCloud. The metrics endpoint uses InfluxDB line protocol.
+
+Use the following command to start it:
+
+```shell
+./quick-start.sh -h <host> -d <dbname> -u <username> -p <password>
+```
+
+## Release
+1. Update the version in `quick-start.sh`.
+2. Commit and push code
+3. Create a tag with the version and push it
+
+```shell
+git tag v<major>.<minor>.<patch>
+git push origin v<major>.<minor>.<patch>
+```
+5. Add release and upload the `quick-start.sh` file in the release page
+6. Update the download link of `quick-start.sh` in the [quick start docs](https://docs.greptime.com/greptimecloud/overview) of GreptimeCloud.
+

quick-start.sh

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+#!/bin/bash
+
+version="1.0.0"
+
+generate_data()
+{
+	unameOut="$(uname -s)"
+	case "${unameOut}" in
+		Linux*)
+			user_cpu_util=$(top -bn1 | grep "Cpu(s)" | awk '{print $2 + $4}')
+			sys_cpu_util=$(top -bn1 | grep "Cpu(s)" | awk '{print $6}')
+			idle_cpu_util=$(top -bn1 | grep "Cpu(s)" | awk -F "," '{print $4}' | awk -F " " '{print $1}')
+			mem_util=$(free | grep Mem | awk '{print $3}')
+			;;
+		Darwin*)
+			user_cpu_util=$(top -l 1 | awk '/^CPU usage: / { print substr($3, 1, length($3)-1) }')
+			sys_cpu_util=$(top -l 1 | awk '/^CPU usage: / { print substr($5, 1, length($5)-1) }')
+			idle_cpu_util=$(top -l 1 | awk '/^CPU usage: / { print substr($7, 1, length($7)-1) }')
+			mem_util=$(top -l 1 | awk '/^PhysMem:/ { print substr($6, 1, length($6)-1) }')
+			;;
+		*)
+			user_cpu_util=$(shuf -i 10-15 -n 1)
+			sys_cpu_util=$(shuf -i 5-10 -n 1)
+			idle_cpu_util=$(shuf -i 70-80 -n 1)
+			mem_util=$(shuf -i 50-60 -n 1)
+	esac
+	now=$(($(date +%s)*1000000000))
+	cat <<EOF
+monitor,host=$unameOut user_cpu=$user_cpu_util,sys_cpu=$sys_cpu_util,idle_cpu=$idle_cpu_util,memory=$mem_util $now
+EOF
+}
+
+while getopts h:d:u:p: flag
+do
+	case "${flag}" in
+		h) host=${OPTARG};;
+		d) database=${OPTARG};;
+		u) username=${OPTARG};;
+		p) password=${OPTARG};;
+	esac
+done
+
+if [ -z "$host" ]; then
+	echo "-h Host is required"
+	exit 1
+fi
+
+if [ -z "$database" ]; then
+	echo "-d Database is required"
+	exit 1
+fi
+
+if [ -z "$username" ]; then
+	echo "-u Username is required"
+	exit 1
+fi
+
+if [ -z "$password" ]; then
+	echo "-p Password is required"
+	exit 1
+fi
+
+echo Sending metrics to GreptimeCloud...
+while true
+do
+	sleep 2
+	curl -i -XPOST "https://$host/v1/influxdb/write?db=$database&u=$username&p=$password" --data-binary "$(generate_data)"
+done