Question

我遇到了一个问题，我编写了一个bash shell脚本来测试参数化的URL并返回HTTP响应代码。

该脚本将URL作为参数。
此脚本由另一个脚本提供，某些值由source-r
该脚本有效，但不是设计的

我的目的是将URL传递给此脚本，验证URL是否符合我们的内部需求，然后尝试测试URL并检索HTTP响应代码。

脚本应重试配置次数（5），尝试之间暂停（30秒），但不会执行此操作。

我希望对URL的测试是即时的，我需要睡觉才能给应用程序（让我们在Tomcat或JBoss中说）开始。

相反，我得到的是一个非常长的暂停，当应用程序启动并处于某种 limbo 时。一旦应用程序联机，或者无法启动验证尝试，则返回正确的HTTP代码，并且脚本会将活动返回给source-r。

#!/bin/bash
#######################################################################################################
# APPLICATION ENDPOINT VALIDATION
#
# This function tests a parameterized URI using cURL and uses the HTTP response value to determine the
# whether the targeted endpoint is available.
#
# Endpoint validation returns a binary value to indicate whether the response was satisfactory.
#
# This functionality is generally used after an application is deployed or restarted.
#######################################################################################################
# TEST THE ENDPOINT
#######################################################################################################
function testEndpointAvailability {
    # -L is used to ensure cURL follows up to 30 status changes through to the end.
    # Without the -L, cURL will stop at the Apache reverse-proxy 301 status instead of listening for 
    # the eventual response.
    endpointResponse=$(curl -oL --write-out '%{http_code}\n' --silent --head "${endpointToValidate}")

    if ! [[ -z "${endpointResponse}" ]]
    then
        if ! [[ "${endpointResponse}" -eq "200" ]]
        then
            logThis "${tfAdminLogDir}/${tfAdminLogFile}" "HTTP Response was: ${endpointResponse}" "INFO"
        else
            logThis "${tfAdminLogDir}/${tfAdminLogFile}" "HTTP Response was OK: ${endpointResponse}" "INFO"
        fi
    fi
}
#######################################################################################################
# LOOP VALIDATION ATTEMPTS
#######################################################################################################
function validationLoop {
    if [[ -z "${endpointResponse}" ]]
    then
        testEndpointAvailability
    fi

    while [[ "${endpointResponse}" -ne "200" ]] || [[ "${retryCount}" -gt "0" ]]
    do
        if ! [[ "${retryCount}" -eq "0" ]] && [[ "${retryCount}" -ne "${originalRetryCount}" ]]
        then

            testEndpointAvailability
            sleep "${retryDelay}"
            retryCount=$(( "${retryCount}" - 1 ))
        else
            logThis "${tfAdminLogDir}/${tfAdminLogFile}" "HTTP Response was OK: ${endpointResponse}" "INFO"
            return 0
        fi
    done
}
#######################################################################################################
# VALIDATE ENDPOINT AVAILABILITY
#
# validateEndpointAvailability endpointToValidate
#######################################################################################################
function validateEndpointAvailability {
    ###################################################################################################
    # TODO
    #
    # [ ] Externalize instantiation of retryCount and retryDelay to properties file(s).
    # [ ] Externalize regex to property file(s).
    ###################################################################################################
    retryCount="5"
    originalRetryCount="${retryCount}"
    retryDelay="30"

    endpointToValidate="$1"

    ###################################################################################################
    # Regex determines viable URL patterns, does not account for all spec options, but meets this
    # script's needs for testing the internal URLs for in-house applications.
    ###################################################################################################
    regex='(https?|ftp|file)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]'

    # Determine if properly parameter count was used
    if ! [[ "$#" -eq "1" ]]
    then
        logThis "${tfAdminLogDir}/${tfAdminLogFile}" "Unable to validate endpoint availability: Improper parameter count." "ERROR"
        exit 1
    fi

    # Check parameterized endpoint for valid structure
    if echo "${endpointToValidate}" | grep -Eq "${regex}"
    then 
        logThis "${tfAdminLogDir}/${tfAdminLogFile}" "Endpoint appears to be properly formed, proceeding with availability check." "INFO"

        validationLoop
    else
        logThis "${tfAdminLogDir}/${tfAdminLogFile}" "Unable to validate endpoint availability: Provided endpoint is improperly formed." "ERROR"
        exit 1
    fi
}
trap cleanupOnExit exit

用于测试HTTP响应代码的URL的Shell脚本＆amp;采取行动

0 个答案: