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domain-check/entrypoint.sh

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#!/bin/sh
# Debugging function
debug() {
if [ $DEBUG -eq 1 ]; then
echo "DEBUG: "$1 $2 $3
fi;
}
EXTRA_OPTIONS="$1 $2 $3";
DEBUG=0
SOURCE=$PROXY
TARGET=$TARGET
DOMAIN=$DOMAIN
LOCATION=$LOCATION
ALLOWED_NETWORKS=$ALLOWED_NETWORKS
PORT=$PORT
PUBLIC_PROXY_PATH=$PUBLIC_PROXY_PATH
SMARTHOST_PROXY_PATH=$SMARTHOST_PROXY_PATH
INDIVIDUAL_DOMAIN_FLAG=$INDIVIDUAL_DOMAIN_FLAG
OPERATION=$OPERATION
if [ "$OPERATION" == "" ]; then
OPERATION="CREATE";
fi
if [ ! -z "$LOCATION" ]; then
TEMPFILENAME=$(echo $LOCATION |cut -d '/' -f2- |sed 's#/#-#g' );
FILENAME="$TEMPFILENAME-$DOMAIN";
else
FILENAME="$DOMAIN";
fi
# ADDITIONAL VARIABLES
ROLES=$ROLES
# turn on debug mode by extra option "debug"
if [[ "$(echo "$EXTRA_OPTIONS" | grep debug)" != "" ]] ; then
DEBUG=1
fi;
SERVICE_FILES=$SERVICE_FILES
HOST_FILE=$HOST_FILE
if [ "$HOST_FILE" == "" ]; then
HOST_FILE="/etc/dns/hosts.local";
fi
RETRIES_NUMBER=$RETRIES_NUMBER
if [ -z "$RETRIES_NUMBER" ]; then
RETRIES_NUMBER=2;
fi
# finding IPv4 addresses from application names.
name_resolver() {
local DNS_IP
local DNS=$1
APP_IP=""
UP_COUNT=0;
SRV_COUNT=0;
echo "DNS: "$DNS;
for D in $(echo $DNS);
do
if [ -z "$STRICK_CHECK" ]; then
# find $D as SELECTOR in hosts file
EXISTS=$(grep -w $D $HOST_FILE);
#EXISTS=$(grep -w "$D-" $HOST_FILE); # TODO?
if [ -n "$EXISTS" ]; then # selector exists in hosts file
APP_IP=$(echo $EXISTS | awk '{print $1}'); # remove all selectors
debug "APP_IP: "$APP_IP;
else
debug "no matching APPLICATION NAME found in $HOST_FILE"
fi
else
D=$(echo $D | cut -d "-" -f1)
UP=$(docker ps --format '{{.Names}}\t{{.Status}}' | grep Up | awk '{print $1}' | grep $D"-") ;
# filtering for ROLES variables if exists.
if [[ "$ROLES" != "null" && ! -z "$ROLES" ]]; then
UPS=""
for U in $(echo $UP); do
for ROLE in $(echo $ROLES); do
FILTERED_BY_ROLE=$(docker inspect $U -f '{{.Config.Labels.roles}}' | uniq | grep $ROLE)
if [[ "$(echo $FILTERED_BY_ROLE)" != "" ]]; then
UPS="$UPS $U";
fi
done
done
UP=$UPS
fi
UP_COUNT=$((UP_COUNT+$(echo $UP | wc -w)));
for SRV_FILE in $(echo $SERVICE_FILES); do
CONTAINER_NAMES=$(jq -r .containers[].NAME $SRV_FILE);
for NAME in $(echo $CONTAINER_NAMES); do
NEWNAME=$(echo $NAME | cut -d "-" -f1);
if [ "$D" == "$NEWNAME" ]; then
if [[ "$ROLES" != "null" && ! -z "$ROLES" ]]; then
C_ROLES=$(jq -r --arg NAME "$NAME" '.containers[] | select(.NAME==$NAME)' $SRV_FILE | jq -r .ROLES);
for ROLE in $(echo $ROLES); do
# TODO, ha C_ROLES tobb erteket tartalmaz
if [ "$ROLE" == "$C_ROLES" ]; then
SRV_COUNT=$((SRV_COUNT+1));
fi
done
else
SRV_COUNT=$((SRV_COUNT+1));
fi;
fi;
done;
done
if [ ! -z "$UP" ] ; then
for D_IP in `echo $UP` ;
do
DNS_IP=$(docker inspect $D_IP -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}');
if [ "$APP_IP" == "" ]; then
APP_IP=$DNS_IP;
else
APP_IP="$APP_IP $DNS_IP";
fi;
echo "APP_IP: "$APP_IP;
done
else
debug "no matching running process found"
fi
fi
done;
if [[ ! -z "$STRICK_CHECK" && $UP_COUNT -lt $SRV_COUNT ]]; then
if [ "$2" == "" ]; then RETRIES=0;
else RETRIES=$2;
fi;
if [ $RETRIES -le $RETRIES_NUMBER ]; then
debug "Try to reread container names at $RETRIES";
sleep 1;
RETRIES=$((RETRIES+1));
name_resolver $DNS $RETRIES;
else
debug "Not enough running process found for executing domain related rules, exiting";
exit;
fi
fi;
}
# GETTING APPLICATIONS IP ADDRESSES
if [ ! -z "$SOURCE" ]; then
for i in $(echo $SOURCE) ; do
if [[ $i =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
SOURCE_IP=$i;
NO_TARGET_IP="true";
else
name_resolver $i;
debug "source ip is $APP_IP";
if [[ -z "$APP_IP" ]]; then
debug "No any IP address found for SOURCE: $SOURCE, try again to resolv";
name_resolver $i;
debug "Source ip is $APP_IP";
if [[ -z "$APP_IP" ]]; then
debug "No any IP address found for SOURCE: $SOURCE, giving up";
exit;
fi
fi
SOURCE_IP=$APP_IP;
fi
done
else
debug "SOURCE is empty";
exit;
fi
if [ ! -z "$TARGET" ]; then
IDX=0
for i in $(echo $TARGET) ; do
name_resolver $i;
debug "target ip is $APP_IP";
if [[ -z "$APP_IP" ]]; then
debug "No any IP address found for TARGET: $TARGET, try again to resolv";
name_resolver $i;
debug "Target ip is $APP_IP";
if [[ -z "$APP_IP" ]]; then
debug "No any IP address found for TARGET: $TARGET, giving up";
exit;
fi
fi
TARGET_IP=$APP_IP;
#for IP in $(echo $APP_IP); do
# IDX=$(expr 1 + $IDX)
# eval TARGET_IP_$IDX=$IP;
#done;
done
else
debug "TARGET is empty";
if [ "$NO_TARGET_IP" != "true" ]; then
exit;
fi
fi;
# CHECKING WHETHER IS IT NEEDED TO USE PUBLIC PROXY SERVICE
if [[ "$PUBLIC_PROXY_PATH" != "" && -z "$LOCATION" ]]; then
# check domain config file exits
LOCAL_NAME="LOCAL_IP";
PUBLIC_DOMAIN=$(jq -r .DOMAIN $PUBLIC_PROXY_PATH/$FILENAME 2>/dev/null)
PUBLIC_IP=$(jq -r .LOCAL_IP $PUBLIC_PROXY_PATH/$FILENAME 2>/dev/null)
if [ -z "$STRICK_CHECK" ]; then
LOCAL_NAME="LOCAL_NAME";
SOURCE_IP=$SOURCE;
PUBLIC_IP=$(jq -r .LOCAL_NAME $PUBLIC_PROXY_PATH/$FILENAME 2>/dev/null)
fi;
if [[ -f "$PUBLIC_PROXY_PATH/$FILENAME" && "$PUBLIC_DOMAIN" == "$DOMAIN" && "$PUBLIC_IP" == "$SOURCE_IP" && "$OPERATION" == "CREATE" ]]; then
echo "Nothing to do.";
else
#Create public proxy domain file
if [[ "$INDIVIDUAL_DOMAIN_FLAG" == "" || "$INDIVIDUAL_DOMAIN_FLAG" == "null" ]]; then
INDIVIDUAL_DOMAIN_FLAG="";
else
INDIVIDUAL_DOMAIN_FLAG='"INDIVIDUAL_DOMAIN": "true",';
fi
echo '
{
"DOMAIN": "'$DOMAIN'",
"ALIASES_HTTP": [ ],
"ALIASES_HTTPS": [ ],
"'$LOCAL_NAME'": "'$SOURCE_IP'",
"HTTP_PORT": "80",
"HTTPS_PORT": "443",
"ERROR_PAGE": "",
"REDIRECT_HTTP": "",
"REDIRECT_HTTPS": "",
'$INDIVIDUAL_DOMAIN_FLAG'
"OPERATION": "'$OPERATION'"
}
' | jq -r . > $PUBLIC_PROXY_PATH/$FILENAME
fi
fi
# CHECKING WHETHER IS IT NEEDED TO USE SMARTHOST PROXY SERVICE
if [ "$SMARTHOST_PROXY_PATH" != "" ]; then
# check domain config file exits
LOCAL_NAME="LOCAL_IP";
SMARTHOST_DOMAIN=$(jq -r .DOMAIN $SMARTHOST_PROXY_PATH/$FILENAME 2>/dev/null)
SMARTHOST_IP=$(jq -r .LOCAL_IP $SMARTHOST_PROXY_PATH/$FILENAME 2>/dev/null)
SMARTHOST_PORT=$(jq -r .HTTP_PORT $SMARTHOST_PROXY_PATH/$FILENAME 2>/dev/null)
if [ -z "$STRICK_CHECK" ]; then
LOCAL_NAME="LOCAL_NAME";
TARGET_IP=$TARGET;
SMARTHOST_IP=$(jq -r .LOCAL_NAME $PUBLIC_PROXY_PATH/$FILENAME 2>/dev/null)
fi;
if [[ -f "$SMARTHOST_PROXY_PATH/$FILENAME" && "$SMARTHOST_DOMAIN" == "$DOMAIN" && "$SMARTHOST_IP" == "$TARGET_IP" && "$SMARTHOST_PORT" == "$PORT" ]]; then
echo "Nothing to do."
else
#Create public proxy domain file
if [ -n "$LOCATION" ]; then
LOCATION_LINE=',
"ALTERNATE_LOCATION_PATH": [ {
"LOCAL_PATH": "'$LOCATION'",
"LOCAL_NAME": "'$TARGET_IP'",
"LOCAL_PORT": "'$PORT'",
"LOCAL_ALLOWED_NETWORK": "'$ALLOWED_NETWORKS'"
} ]
';
else
LOCATION_LINE=',"'$LOCAL_NAME'": "'$TARGET_IP'"';
fi;
echo '
{
"DOMAIN": "'$DOMAIN'",
"ALIASES_HTTP": [ ],
"ALIASES_HTTPS": [ ],
"HTTP_PORT": "",
"HTTPS_PORT": "'$PORT'",
"ERROR_PAGE": "",
"REDIRECT_HTTP": "https://'$DOMAIN''$LOCATION'",
"REDIRECT_HTTPS": "",
"OPERATION": "'$OPERATION'",
"MAX_BODY_SIZE": "512M"'$LOCATION_LINE'
}
' | jq -r . > $SMARTHOST_PROXY_PATH/$FILENAME
fi
fi