#!/bin/bash

mysql_user="xxx"
mysql_pass="xxx"
mysql_db="xxx"
mysql="mysql --skip-column-names -u $mysql_user -p$mysql_pass -D $mysql_db"

messages=""

# Appends an error message to the output
# Parameter 1: the message to append
function appendMessage {
	messages="$messages\n- $1"
}

# Checks if the task with the given UID is active
# Parameter 1: the uid of the task to check
# Parameter 2: the name of the task
function checkForActiveTask {
	crawlerActive=`echo "SELECT COUNT(*) FROM tx_scheduler_task WHERE uid=$1 AND disable=0" | ${mysql}`
	if [ ! "$crawlerActive" -eq "1" ]; then
		appendMessage "$2 task is not active"
	fi
}

# Checks if the trigger with the given name exists in the databsae
# Parameter 1: the name of the trigger
# Parameter 2: the name of the task
function checkForTrigger {
	triggerActive=`echo "SHOW TRIGGERS" | ${mysql} | grep $1`
	if [ -z "$triggerActive" ]; then
		appendMessage "$1 trigger does not exist"
	fi
}

checkForActiveTask 5 Crawler
checkForActiveTask 11 "Solr Indexer"
checkForActiveTask 8 "Cache Garbage Collection"

checkForTrigger myRequiredTrigger1
checkForTrigger myRequiredTrigger2

if [ ! -z "$messages" ]; then
	echo ""
	echo "Warning! System state of -`hostname -f`- is not optimal."
	echo ""
	echo "Please check the following errors:"
	echo -e ${messages}
	echo ""
fi