Kubectl port-forward with fzf service selector

kubectl-pfz

#!/bin/bash

##
## kubectl port-forward on selected services, combined by all service ports.
##
function kpfz()
{
    local svc_ports_command="jq -r '.items[] |
      {
        name: .metadata.name,
        port: .spec.ports[].port | tonumber,
        lport: (\"\\(.metadata.name)\") | explode | add
      } |
      \"\\(.name):\\(.port):\\(.lport + .port)\"
    '"

    local svcs=$(
        FZF_DEFAULT_COMMAND="command kubectl get svc -o json $_NS | $svc_ports_command" \
            fzf -m --ansi --no-preview -1 --exact --select-1 --query="$@"
    )

    if [ -z "$svcs" ]; then
        return
    fi

    pids=()
    for svc in $svcs; do
        local name=$(cut -d: -f1 <<<$svc)
        local port=$(cut -d: -f2 <<<$svc)
        local lport=$(cut -d: -f3 <<<$svc)
        local cmd="kubectl port-forward $_NS svc/$name $lport:$port"
        echo "+ $cmd"
        command $cmd & pids+=($!)
    done
    trap "echo -e '\nKilling pids: ${pids[*]}'; kill -INT ${pids[*]}" SIGINT SIGTERM SIGHUP EXIT
    wait
    trap - SIGINT SIGTERM SIGHUP EXIT
    sleep 1 # give a chance to prompt appear
}

##
## Same as kpfz, but for a specifc namespace
##
function kpfzn()
{
    local ns="$1"
    shift
    _NS="-n $ns" kpfz "$@"
}