Zeppelin uses travis as it's CI server. CI environment variable is set by travis. Check http://docs.travis-ci.com/user/ci-environment/#Environment-variables
Thanks, moon On Sun, Mar 8, 2015 at 12:34 AM, Taotao.Li <[email protected]> wrote: > Hi, but to execute wait_zeppelin_is_up_for_ci, should we first define a > variable CI as "true"? I want to know where the variable CI was defined? > thanks > > ------------------------------ > *发件人: *"moon soo Lee" <[email protected]> > *收件人: *[email protected] > *发送时间: *星期六, 2015年 3 月 07日 上午 8:53:52 > *主题: *Re: hi, I want to know what's the usage of > wait_zeppelin_is_up_for_ci function in zeppelin-daemon.sh？thanks > > > Hi, > > start() function in zeppelin-daemon.sh starts java process for Zeppelin > server. > It could just simply check if launching this java process succeed or not. > But some case, for example, even if java process is successfully launched, > something still can be wrong and Zeppelin server is not serving anything > (process is still running), > We wanted CI server detect this case and for doing that, > wait_zeppelin_is_up_for_ci() > waits zeppelin server initializing itself and opening port and ready to > serve. > > Thanks, > moon > > On Fri, Mar 6, 2015 at 3:37 PM, Taotao.Li <[email protected]> wrote: > >> >> thanks a lot, I'm reading the source code of zeppelin, hope to contribute >> something to this awesome project. >> >> here is the source code: >> >> function wait_zeppelin_is_up_for_ci() { >> if [[ "${CI}" == "true" ]]; then >> local count=0; >> while [[ "${count}" -lt 30 ]]; do >> curl -v localhost:8080 2>&1 | grep '200 OK' >> if [[ $? -ne 0 ]]; then >> sleep 1 >> continue >> else >> break >> fi >> let "count+=1" >> done >> fi >> } >> >> here is the time to execute this function: >> >> function start() { >> local pid >> >> if [[ -f "${ZEPPELIN_PID}" ]]; then >> pid=$(cat ${ZEPPELIN_PID}) >> if kill -0 ${pid} >/dev/null 2>&1; then >> echo "${ZEPPELIN_NAME} is already running" >> return 0; >> fi >> fi >> >> initialize_default_directories >> >> nohup nice -n $ZEPPELIN_NICENESS $ZEPPELIN_RUNNER $JAVA_OPTS -cp >> $CLASSPATH $ZEPPELIN_MAIN >> "${ZEPPELIN_OUTFILE}" 2>&1 < /dev/null & >> pid=$! >> if [[ -z "${pid}" ]]; then >> action_msg "${ZEPPELIN_NAME} start" "${SET_ERROR}" >> return 1; >> else >> action_msg "${ZEPPELIN_NAME} start" "${SET_OK}" >> echo ${pid} > ${ZEPPELIN_PID} >> fi >> >> wait_zeppelin_is_up_for_ci >> sleep 2 >> check_if_process_is_alive >> } >> >> >> thanks a lot >> > > > >
