之前写过一篇《Zabbix监控之Linux命令行/Shell脚本解析json》，文章提到一种“利于Zabbix监控报警的json数据格式”，便于运维人员通过API获取应用程序中的运行状态、内部依赖关系等。但有的开发人员没有按照这种格式来，而是采用了下面的这种json数据格式：
成功:
{
"errcode": "0",
"errmsg": "ok"
}
失败:
{
"errcode": "1",
"errmsg": {
"Mysql": {
"code": "0",
"msg": "OK"
},
"Memcache": {
"code": "0",
"msg": "0"
},
"MQ": {
"code": "0",
"msg": "OK"
},
"BS": {
"code": "1",
"msg": "os与bs连接出现故障"
},
"Redis": {
"code": "0",
"msg": "OK"
}
}
}
而“利于Zabbix监控报警的json数据格式”应该是这样的：
成功:
{
"errcode": "0",
"errmsg": {
"Mysql": {
"code": "0",
"msg": "OK"
},
"Memcache": {
"code": "0",
"msg": "0"
},
"MQ": {
"code": "0",
"msg": "OK"
},
"BS": {
"code": "0",
"msg": "ok"
},
"Redis": {
"code": "0",
"msg": "OK"
}
}
}
失败:
{
"errcode": "1",
"errmsg": {
"Mysql": {
"code": "0",
"msg": "OK"
},
"Memcache": {
"code": "0",
"msg": "0"
},
"MQ": {
"code": "0",
"msg": "OK"
},
"BS": {
"code": "1",
"msg": "os与bs连接出现故障"
},
"Redis": {
"code": "0",
"msg": "OK"
}
}
}
由于今晚就要更新包含这段代码的应用，有可能来不及修改，因此我只能重新修改一下先前写好的脚本，现将脚本展示如下：
#!/bin/bash
# Shell Script Details
# Name: getdata_gwservice.sh
# Version: 1.0
# Visual Name(human readable format): get data from Web Service(GWService)
# Shell Script Function: get data from Web Service with curl, data format is json
# Author: Guodong Ding
# Date: Thu Aug 20 09:56:26 CST 2015
# parameter is necessary
[ ! -z "$1" ] || exit 1
# resolve "jq" command for parse json
if [[ ! `which jq` ]]; then
echo "jq is not installed on target system, please install it first! "
# adaptive for CentOS or Ubuntu
apt-get -qq -y install jq || yum -y install jq
[ $? -ne 0 ] && echo "Trying install jq failed! ";echo "Trying install jq successfully! "
echo "$(which jq) is found!"
echo 1
fi
# refactoring curl CLI
curl=$(which curl)
postdata="accesscode=somecode&method=someapiname"
# test environment
url=http://hostname/url/api
# production environment
#url=http://hostname/url/api
# TODO
# why not execute a string as command?
# curlcli="$curl -d \"$postdata\" $url 2>/dev/null"
# make repeated cli to a function
function curlcli() {
$curl -m 10 --connect-timeout 10 -s -d "$postdata" $url 2>/dev/null
# For test purpose
#echo '{"errcode":"1","errmsg":{"Mysql":{"code":"0","msg":"OK"},"Memcache":{"code":"0","msg":"0"},"MQ":{"code":"0","msg":"OK"},"BS":{"code":"1","errmsg":"os与bs连接出.故障"},"Redis":{"code":"0","errmsg":"OK"}}}'
[ $? -ne 0 ] && exit $?
}
# TODO
# How to merge function totalstatus() and function total_error_status() into a function?
function totalstatus() {
# another awk expression is: awk '{print int($1)}'
curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function total_error_status() {
outputswitch=`curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}'`
if [[ $outputswitch -eq 1 ]]; then
curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}' >/dev/null 2>&1
else
curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}'
fi
[ $? -ne 0 ] && exit $?
# TODO
# why we need a return for this function ? because we will use "||" to determine result of CLI
# by the way , "||" is depended on the result which returned with keyword "return"
# tested pass with return a numeric argument lager than 1
return `curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}'`
}
function mysqlstatus() {
curlcli | jq ".errmsg.Mysql.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function memcachedstatus() {
curlcli | jq ".errmsg.Memcache.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function messagequeuestatus() {
curlcli | jq ".errmsg.MQ.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function businessservicestatus() {
curlcli | jq ".errmsg.BS.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function redisstatus() {
curlcli | jq ".errmsg.Redis.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
case $1 in
totalstatus )
totalstatus
;;
mysqlstatus )
total_error_status || mysqlstatus
;;
memcachedstatus )
total_error_status || memcachedstatus
;;
messagequeuestatus )
total_error_status || messagequeuestatus
;;
businessservicestatus )
total_error_status || businessservicestatus
;;
redisstatus )
total_error_status || redisstatus
;;
esac
附：按照“利于Zabbix监控报警的json数据格式”写好的脚本展示如下：
#!/bin/bash
# Shell Script Details:
# Name: getdata_gwservice.sh
# Version: 2.0
# Visual Name(human readable format): get data from Web Service(GWService) for Zabbix monitoring
# Shell Script Function: get data from Web Service with curl, data format is json
# Author: Guodong Ding
# Date: Thu Aug 20 09:56:26 CST 2015
# parameter is necessary
[ ! -z "$1" ] || exit 1
# resolve "jq" command for parse json
if [[ ! `which jq` ]]; then
echo "jq is not installed on target system, please install it first! "
# adaptive for CentOS or Ubuntu
apt-get -qq -y install jq || yum -y install jq
[ $? -ne 0 ] && echo "Trying install jq failed! ";echo "Trying install jq successfully! "
echo "$(which jq) is found!"
echo 1
fi
# refactoring curl CLI
curl=$(which curl)
postdata="accesscode=somecode&method=someapiname"
# test environment
url=http://hostname/url/api
# production environment
#url=http://hostname/url/api
# TODO
# why not execute a string as command?
# curlcli="$curl -d \"$postdata\" $url 2>/dev/null"
# make repeated cli to a function
function curlcli() {
$curl -m 10 --connect-timeout 10 -s -d "$postdata" $url 2>/dev/null
# For test purpose
#echo '{"errcode":"1","errmsg":{"Mysql":{"code":"0","msg":"OK"},"Memcatch":{"code":"0","msg":"0"},"MQ":{"code":"0","msg":"OK"},"BS":{"code":"1","errmsg":"os与bs连接出.故障"},"Redis":{"code":"0","errmsg":"OK"}}}'
[ $? -ne 0 ] && exit $?
}
function totalstatus() {
# another awk expression is: awk '{print int($1)}'
curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
# TODO, TOREMEMBER
# Why we need a return for this function? because we will use "||" to determine result of CLI,
# such as "totalstatus >/dev/null 2>&1 || mysqlstatus".
# By the way , "||" is depended on the result which returned with keyword "return",
# tested pass with return a numeric argument lager than 1 , such as 1001, 9003, etc
return `curlcli | jq ".errcode" | awk -F '"' '/[0-9]/ {print $2}'`
}
function mysqlstatus() {
curlcli | jq ".errmsg.Mysql.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function memcachedstatus() {
curlcli | jq ".errmsg.Memcache.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function messagequeuestatus() {
curlcli | jq ".errmsg.MQ.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function businessservicestatus() {
curlcli | jq ".errmsg.BS.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
function redisstatus() {
curlcli | jq ".errmsg.Redis.code" | awk -F '"' '/[0-9]/ {print $2}'
[ $? -ne 0 ] && exit $?
}
case $1 in
totalstatus )
totalstatus
;;
mysqlstatus )
mysqlstatus
;;
memcachedstatus )
memcachedstatus
;;
messagequeuestatus )
messagequeuestatus
;;
businessservicestatus )
businessservicestatus
;;
redisstatus )
redisstatus
;;
* )
exit 1
;;
esac
tag:Linux命令行解析json,Linux Shell解析json,Zabbix业务监控,Zabbix自定义用户参数,Zabbix API
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