unixorn/fzf-zsh-plugin

#!/usr/bin/env bash
#
# Based on https://github.com/junegunn/fzf/blob/master/ADVANCED.md#using-fzf-as-the-secondary-filter

set -o pipefail
if [[ -n "$DEBUG" ]]; then
  # shellcheck disable=SC2086
  if [[ "$(echo $DEBUG | tr '[:upper:]' '[:lower:]')" == "verbose" ]]; then
    set -x
  fi
fi

function debug() {
  if [[ -n "$DEBUG" ]]; then
    echo "$@"
  fi
}

function echo-stderr() {
  echo "$@" 1>&2  ## Send message to stderr.
}

function fail() {
  printf '%s\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return a code specified by $2 or 1 by default.
}

function has() {
  # Check if a command is in $PATH
  which "$@" > /dev/null 2>&1
}

function get-settings() {
  SETTING_ENV_NAME=${SETTING_ENV_NAME:-'default-value'}
}

function check-dependencies() {
  debug "Checking dependencies..."
  # shellcheck disable=SC2041
  # Placeholders for whatever programs you really need
  for p in 'fzf' 'kubectl' 'sed'
  do
    if ! has $p; then
      fail "Can't find $p in your $PATH"
    else
      debug "- Found $p"
    fi
  done
}

function my-name() {
  basename "$0"
}

function usage() {
  echo "Usage: $(my-name)"
  echo
  echo "Use fzf to browse running k8s pods"
}

pods() {
  : | command='kubectl get pods --all-namespaces' fzf \
    --info=inline --layout=reverse --header-lines=1 \
    --prompt "$(kubectl config current-context | sed 's/-context$//')> " \
    --header $'╱ Enter (kubectl exec) ╱ CTRL-O (open log in editor) ╱ CTRL-R (reload) ╱\n\n' \
    --bind 'start:reload:$command' \
    --bind 'ctrl-r:reload:$command' \
    --bind 'ctrl-/:change-preview-window(80%,border-bottom|hidden|)' \
    --bind 'enter:execute:kubectl exec -it --namespace {1} {2} -- bash > /dev/tty' \
    --bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --all-containers --namespace {1} {2}) > /dev/tty' \
    --preview-window up:follow \
    --preview 'kubectl logs --follow --all-containers --tail=10000 --namespace {1} {2}' "$@"
}

check-dependencies
pods