1 files changed, 159 insertions, 0 deletions
diff --git a/plugins/kube-ps1/kube-ps1.plugin.zsh b/plugins/kube-ps1/kube-ps1.plugin.zsh
new file mode 100644
index 000000000..8a751bda8
--- /dev/null
+++ b/plugins/kube-ps1/kube-ps1.plugin.zsh
@@ -0,0 +1,159 @@
+#!/bin/zsh
+
+# Kubernetes prompt helper for bash/zsh
+# ported to oh-my-zsh
+# Displays current context and namespace
+
+# Copyright 2018 Jon Mosco
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Debug
+[[ -n $DEBUG ]] && set -x
+
+setopt PROMPT_SUBST
+autoload -U add-zsh-hook
+add-zsh-hook precmd _kube_ps1_update_cache
+zmodload zsh/stat
+zmodload zsh/datetime
+
+# Default values for the prompt
+# Override these values in ~/.zshrc
+KUBE_PS1_BINARY="${KUBE_PS1_BINARY:-kubectl}"
+KUBE_PS1_SYMBOL_ENABLE="${KUBE_PS1_SYMBOL_ENABLE:-true}"
+KUBE_PS1_SYMBOL_DEFAULT="${KUBE_PS1_SYMBOL_DEFAULT:-\u2388 }"
+KUBE_PS1_SYMBOL_USE_IMG="${KUBE_PS1_SYMBOL_USE_IMG:-false}"
+KUBE_PS1_NS_ENABLE="${KUBE_PS1_NS_ENABLE:-true}"
+KUBE_PS1_SEPARATOR="${KUBE_PS1_SEPARATOR-|}"
+KUBE_PS1_DIVIDER="${KUBE_PS1_DIVIDER-:}"
+KUBE_PS1_PREFIX="${KUBE_PS1_PREFIX-(}"
+KUBE_PS1_SUFFIX="${KUBE_PS1_SUFFIX-)}"
+KUBE_PS1_LAST_TIME=0
+KUBE_PS1_ENABLED=true
+
+KUBE_PS1_COLOR_SYMBOL="%F{blue}"
+KUBE_PS1_COLOR_CONTEXT="%F{red}"
+KUBE_PS1_COLOR_NS="%F{cyan}"
+
+_kube_ps1_binary_check() {
+  command -v "$1" >/dev/null
+}
+
+_kube_ps1_symbol() {
+  [[ "${KUBE_PS1_SYMBOL_ENABLE}" == false ]] && return
+
+  KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_DEFAULT}"
+  KUBE_PS1_SYMBOL_IMG="\u2638 "
+
+  if [[ "${KUBE_PS1_SYMBOL_USE_IMG}" == true ]]; then
+    KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_IMG}"
+  fi
+
+  echo "${KUBE_PS1_SYMBOL}"
+}
+
+_kube_ps1_split() {
+  type setopt >/dev/null 2>&1 && setopt SH_WORD_SPLIT
+  local IFS=$1
+  echo $2
+}
+
+_kube_ps1_file_newer_than() {
+  local mtime
+  local file=$1
+  local check_time=$2
+
+  zmodload -e "zsh/stat"
+  if [[ "$?" -eq 0 ]]; then
+    mtime=$(stat +mtime "${file}")
+  elif stat -c "%s" /dev/null &> /dev/null; then
+    # GNU stat
+    mtime=$(stat -c %Y "${file}")
+  else
+    # BSD stat
+    mtime=$(stat -f %m "$file")
+  fi
+
+  [[ "${mtime}" -gt "${check_time}" ]]
+}
+
+_kube_ps1_update_cache() {
+  KUBECONFIG="${KUBECONFIG:=$HOME/.kube/config}"
+  if ! _kube_ps1_binary_check "${KUBE_PS1_BINARY}"; then
+    # No ability to fetch context/namespace; display N/A.
+    KUBE_PS1_CONTEXT="BINARY-N/A"
+    KUBE_PS1_NAMESPACE="N/A"
+    return
+  fi
+
+  if [[ "${KUBECONFIG}" != "${KUBE_PS1_KUBECONFIG_CACHE}" ]]; then
+    # User changed KUBECONFIG; unconditionally refetch.
+    KUBE_PS1_KUBECONFIG_CACHE=${KUBECONFIG}
+    _kube_ps1_get_context_ns
+    return
+  fi
+
+  # kubectl will read the environment variable $KUBECONFIG
+  # otherwise set it to ~/.kube/config
+  local conf
+  for conf in $(_kube_ps1_split : "${KUBECONFIG:-${HOME}/.kube/config}"); do
+    [[ -r "${conf}" ]] || continue
+    if _kube_ps1_file_newer_than "${conf}" "${KUBE_PS1_LAST_TIME}"; then
+      _kube_ps1_get_context_ns
+      return
+    fi
+  done
+}
+
+_kube_ps1_get_context_ns() {
+
+  # Set the command time
+  KUBE_PS1_LAST_TIME=$EPOCHSECONDS
+
+  KUBE_PS1_CONTEXT="$(${KUBE_PS1_BINARY} config current-context 2>/dev/null)"
+  if [[ -z "${KUBE_PS1_CONTEXT}" ]]; then
+    KUBE_PS1_CONTEXT="N/A"
+    KUBE_PS1_NAMESPACE="N/A"
+    return
+  elif [[ "${KUBE_PS1_NS_ENABLE}" == true ]]; then
+    KUBE_PS1_NAMESPACE="$(${KUBE_PS1_BINARY} config view --minify --output 'jsonpath={..namespace}' 2>/dev/null)"
+    # Set namespace to 'default' if it is not defined
+    KUBE_PS1_NAMESPACE="${KUBE_PS1_NAMESPACE:-default}"
+  fi
+}
+
+# function to disable the prompt on the current shell
+kubeon(){
+  KUBE_PS1_ENABLED=true
+}
+
+# function to disable the prompt on the current shell
+kubeoff(){
+  KUBE_PS1_ENABLED=false
+}
+
+# Build our prompt
+kube_ps1 () {
+  local reset_color="%{$reset_color%}"
+  [[ ${KUBE_PS1_ENABLED} != 'true' ]] && return
+
+  KUBE_PS1="${reset_color}$KUBE_PS1_PREFIX"
+  KUBE_PS1+="${KUBE_PS1_COLOR_SYMBOL}$(_kube_ps1_symbol)"
+  KUBE_PS1+="${reset_color}$KUBE_PS1_SEPERATOR"
+  KUBE_PS1+="${KUBE_PS1_COLOR_CONTEXT}$KUBE_PS1_CONTEXT${reset_color}"
+  KUBE_PS1+="$KUBE_PS1_DIVIDER"
+  KUBE_PS1+="${KUBE_PS1_COLOR_NS}$KUBE_PS1_NAMESPACE${reset_color}"
+  KUBE_PS1+="$KUBE_PS1_SUFFIX"
+
+  echo "${KUBE_PS1}"
+}