build: move some of hack/lib/ into a new cluster/lib/

Some functionality in hack/lib is currently depended on by
cluster/common.sh so kube-up from the full release tar (which
does not include hack/) is currently broken. With this PR we
create cluster/lib/ and move the necessary bits from hack/
over to get kube-up working again.

Fixes: 96d1b8d1b2
Signed-off-by: Mike Danese <mikedanese@google.com>

hack/lib/logging.sh

@@ -1,146 +0,0 @@
-#!/bin/bash
-
-# Copyright 2014 The Kubernetes Authors All rights reserved.
-#
-# 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
-#
-#     http://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.
-
-# Handler for when we exit automatically on an error.
-# Borrowed from https://gist.github.com/ahendrix/7030300
-kube::log::errexit() {
-  local err="${PIPESTATUS[@]}"
-
-  # If the shell we are in doesn't have errexit set (common in subshells) then
-  # don't dump stacks.
-  set +o | grep -qe "-o errexit" || return
-
-  set +o xtrace
-  local code="${1:-1}"
-  kube::log::error_exit "'${BASH_COMMAND}' exited with status $err" "${1:-1}" 1
-}
-
-kube::log::install_errexit() {
-  # trap ERR to provide an error handler whenever a command exits nonzero  this
-  # is a more verbose version of set -o errexit
-  trap 'kube::log::errexit' ERR
-
-  # setting errtrace allows our ERR trap handler to be propagated to functions,
-  # expansions and subshells
-  set -o errtrace
-}
-
-# Print out the stack trace
-#
-# Args:
-#   $1 The number of stack frames to skip when printing.
-kube::log::stack() {
-  local stack_skip=${1:-0}
-  stack_skip=$((stack_skip + 1))
-  if [[ ${#FUNCNAME[@]} -gt $stack_skip ]]; then
-    echo "Call stack:" >&2
-    local i
-    for ((i=1 ; i <= ${#FUNCNAME[@]} - $stack_skip ; i++))
-    do
-      local frame_no=$((i - 1 + stack_skip))
-      local source_file=${BASH_SOURCE[$frame_no]}
-      local source_lineno=${BASH_LINENO[$((frame_no - 1))]}
-      local funcname=${FUNCNAME[$frame_no]}
-      echo "  $i: ${source_file}:${source_lineno} ${funcname}(...)" >&2
-    done
-  fi
-}
-
-# Log an error and exit.
-# Args:
-#   $1 Message to log with the error
-#   $2 The error code to return
-#   $3 The number of stack frames to skip when printing.
-kube::log::error_exit() {
-  local message="${1:-}"
-  local code="${2:-1}"
-  local stack_skip="${3:-0}"
-  stack_skip=$((stack_skip + 1))
-
-  local source_file=${BASH_SOURCE[$stack_skip]}
-  local source_line=${BASH_LINENO[$((stack_skip - 1))]}
-  echo "!!! Error in ${source_file}:${source_line}" >&2
-  [[ -z ${1-} ]] || {
-    echo "  ${1}" >&2
-  }
-
-  kube::log::stack $stack_skip
-
-  echo "Exiting with status ${code}" >&2
-  exit "${code}"
-}
-
-# Log an error but keep going.  Don't dump the stack or exit.
-kube::log::error() {
-  timestamp=$(date +"[%m%d %H:%M:%S]")
-  echo "!!! $timestamp ${1-}" >&2
-  shift
-  for message; do
-    echo "    $message" >&2
-  done
-}
-
-# Print an usage message to stderr.  The arguments are printed directly.
-kube::log::usage() {
-  echo >&2
-  local message
-  for message; do
-    echo "$message" >&2
-  done
-  echo >&2
-}
-
-kube::log::usage_from_stdin() {
-  local messages=()
-  while read -r line; do
-    messages+=$line
-  done
-
-  kube::log::usage "${messages[@]}"
-}
-
-# Print out some info that isn't a top level status line
-kube::log::info() {
-  for message; do
-    echo "$message"
-  done
-}
-
-# Just like kube::log::info, but no \n, so you can make a progress bar
-kube::log::progress() {
-  for message; do
-    echo -e -n "$message"
-  done
-}
-
-kube::log::info_from_stdin() {
-  local messages=()
-  while read -r line; do
-    messages+=$line
-  done
-
-  kube::log::info "${messages[@]}"
-}
-
-# Print a status line.  Formatted to show up in a stream of output.
-kube::log::status() {
-  timestamp=$(date +"[%m%d %H:%M:%S]")
-  echo "+++ $timestamp $1"
-  shift
-  for message; do
-    echo "    $message"
-  done
-}