# Script to tail logs of given kube service

kubelogs.sh

#!/bin/bash                                
                                           
# Script to tail logs of given kube service                                                                            
                                           
if [ $# -eq 0 ]                            
then                                       
    printf "Give me a service to look for" 
    exit 1                                 
fi                                         
                                           
# Join function that supports a multi-character separator (copied from http://stackoverflow.com/a/23673883/398441)
function join() {                          
    # $1 is return variable name           
    # $2 is sep                            
    # $3... are the elements to join       
    local retname=$1 sep=$2 ret=$3         
    shift 3 || shift $(($#))               
    printf -v "$retname" "%s" "$ret${@/#/$sep}"
}                                          
                                           
to_ignore="RedisCacheRepository|IdentityService.GetCallingIdentity|IdentityService.GetEmailByUserId|CosmosEntityRepository"
                                           
services=`kubectl get pods | rg $1 | cut -f 1 -d ' '`
                                           
cmmand=();                                 
                                           
for pod in ${services[@]}; do              
    cmmands+=("kubectl logs -f ${pod} --since 10s | jq -r '.LogLevel + \" \"+ .Message + \" \"+.Exception' --unbuffered | rg --line-buffered -v '${to_ignore}'");
done                                       
                                           
final_command="";                          
join final_command " & " "${cmmands[@]}"   
#printf "${final_command}\n"               
                                           
eval "${final_command}"