openstack/devstack
Code Issues Proposed changes
57df186c13
devstack/functions-common
Ian Cordasco 69e3c0aac9 Update certificate creation for urllib3 
urllib3 1.18 was released today and contains new more correct hostname
matching that takes into account the ipAddress portion of a certificate
and disallows matching an IP Address against a DNS hostname.

Change-Id: I37d247b68911dc85f55adec6a7952ed321c1b1d8
2016-09-26 12:21:41 -07:00

2456 lines
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#!/bin/bash
#
# functions-common - Common functions used by DevStack components
#
# The canonical copy of this file is maintained in the DevStack repo.
# All modifications should be made there and then sync'ed to other repos
# as required.
#
# This file is sorted alphabetically within the function groups.
#
# - Config Functions
# - Control Functions
# - Distro Functions
# - Git Functions
# - OpenStack Functions
# - Package Functions
# - Process Functions
# - Service Functions
# - System Functions
#
# The following variables are assumed to be defined by certain functions:
#
# - ``ENABLED_SERVICES``
# - ``ERROR_ON_CLONE``
# - ``FILES``
# - ``OFFLINE``
# - ``RECLONE``
# - ``REQUIREMENTS_DIR``
# - ``STACK_USER``
# - ``TRACK_DEPENDS``
# - ``http_proxy``, ``https_proxy``, ``no_proxy``
#
# Save trace setting
_XTRACE_FUNCTIONS_COMMON=$(set +o | grep xtrace)
set +o xtrace
# ensure we don't re-source this in the same environment
[[ -z "$_DEVSTACK_FUNCTIONS_COMMON" ]] || return 0
declare -r _DEVSTACK_FUNCTIONS_COMMON=1
# Global Config Variables
declare -A GITREPO
declare -A GITBRANCH
declare -A GITDIR
TRACK_DEPENDS=${TRACK_DEPENDS:-False}
# Save these variables to .stackenv
STACK_ENV_VARS="BASE_SQL_CONN DATA_DIR DEST ENABLED_SERVICES HOST_IP \
KEYSTONE_AUTH_PROTOCOL KEYSTONE_AUTH_URI KEYSTONE_SERVICE_URI \
LOGFILE OS_CACERT SERVICE_HOST SERVICE_PROTOCOL STACK_USER TLS_IP \
HOST_IPV6 SERVICE_IP_VERSION"
# Saves significant environment variables to .stackenv for later use
# Refers to a lot of globals, only TOP_DIR and STACK_ENV_VARS are required to
# function, the rest are simply saved and do not cause problems if they are undefined.
# save_stackenv [tag]
function save_stackenv {
local tag=${1:-""}
# Save some values we generated for later use
time_stamp=$(date "+$TIMESTAMP_FORMAT")
echo "# $time_stamp $tag" >$TOP_DIR/.stackenv
for i in $STACK_ENV_VARS; do
echo $i=${!i} >>$TOP_DIR/.stackenv
done
}
# Update/create user clouds.yaml file.
# clouds.yaml will have
# - A `devstack` entry for the `demo` user for the `demo` project.
# - A `devstack-admin` entry for the `admin` user for the `admin` project.
# write_clouds_yaml
function write_clouds_yaml {
# The location is a variable to allow for easier refactoring later to make it
# overridable. There is currently no usecase where doing so makes sense, so
# it's not currently configurable.
CLOUDS_YAML=/etc/openstack/clouds.yaml
sudo mkdir -p $(dirname $CLOUDS_YAML)
sudo chown -R $STACK_USER /etc/openstack
CA_CERT_ARG=''
if [ -f "$SSL_BUNDLE_FILE" ]; then
CA_CERT_ARG="--os-cacert $SSL_BUNDLE_FILE"
fi
# demo -> devstack
$TOP_DIR/tools/update_clouds_yaml.py \
--file $CLOUDS_YAML \
--os-cloud devstack \
--os-region-name $REGION_NAME \
--os-identity-api-version 3 \
$CA_CERT_ARG \
--os-auth-url $KEYSTONE_AUTH_URI \
--os-username demo \
--os-password $ADMIN_PASSWORD \
--os-project-name demo
# alt_demo -> devstack-alt
$TOP_DIR/tools/update_clouds_yaml.py \
--file $CLOUDS_YAML \
--os-cloud devstack-alt \
--os-region-name $REGION_NAME \
--os-identity-api-version 3 \
$CA_CERT_ARG \
--os-auth-url $KEYSTONE_AUTH_URI \
--os-username alt_demo \
--os-password $ADMIN_PASSWORD \
--os-project-name alt_demo
# admin -> devstack-admin
$TOP_DIR/tools/update_clouds_yaml.py \
--file $CLOUDS_YAML \
--os-cloud devstack-admin \
--os-region-name $REGION_NAME \
--os-identity-api-version 3 \
$CA_CERT_ARG \
--os-auth-url $KEYSTONE_AUTH_URI \
--os-username admin \
--os-password $ADMIN_PASSWORD \
--os-project-name admin
# CLean up any old clouds.yaml files we had laying around
rm -f $(eval echo ~"$STACK_USER")/.config/openstack/clouds.yaml
}
# trueorfalse <True|False> <VAR>
#
# Normalize config-value provided in variable VAR to either "True" or
# "False". If VAR is unset (i.e. $VAR evaluates as empty), the value
# of the second argument will be used as the default value.
#
# Accepts as False: 0 no No NO false False FALSE
# Accepts as True: 1 yes Yes YES true True TRUE
#
# usage:
# VAL=$(trueorfalse False VAL)
function trueorfalse {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local default=$1
if [ -z $2 ]; then
die $LINENO "variable to normalize required"
fi
local testval=${!2:-}
case "$testval" in
"1" | [yY]es | "YES" | [tT]rue | "TRUE" ) echo "True" ;;
"0" | [nN]o | "NO" | [fF]alse | "FALSE" ) echo "False" ;;
* ) echo "$default" ;;
esac
$xtrace
}
function isset {
[[ -v "$1" ]]
}
# Control Functions
# =================
# Prints backtrace info
# filename:lineno:function
# backtrace level
function backtrace {
local level=$1
local deep
deep=$((${#BASH_SOURCE[@]} - 1))
echo "[Call Trace]"
while [ $level -le $deep ]; do
echo "${BASH_SOURCE[$deep]}:${BASH_LINENO[$deep-1]}:${FUNCNAME[$deep-1]}"
deep=$((deep - 1))
done
}
# Prints line number and "message" then exits
# die $LINENO "message"
function die {
local exitcode=$?
set +o xtrace
local line=$1; shift
if [ $exitcode == 0 ]; then
exitcode=1
fi
backtrace 2
err $line "$*"
# Give buffers a second to flush
sleep 1
exit $exitcode
}
# Checks an environment variable is not set or has length 0 OR if the
# exit code is non-zero and prints "message" and exits
# NOTE: env-var is the variable name without a '$'
# die_if_not_set $LINENO env-var "message"
function die_if_not_set {
local exitcode=$?
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local line=$1; shift
local evar=$1; shift
if ! is_set $evar || [ $exitcode != 0 ]; then
die $line "$*"
fi
$xtrace
}
function deprecated {
local text=$1
DEPRECATED_TEXT+="\n$text"
echo "WARNING: $text"
}
# Prints line number and "message" in error format
# err $LINENO "message"
function err {
local exitcode=$?
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local msg="[ERROR] ${BASH_SOURCE[2]}:$1 $2"
echo $msg 1>&2;
if [[ -n ${LOGDIR} ]]; then
echo $msg >> "${LOGDIR}/error.log"
fi
$xtrace
return $exitcode
}
# Checks an environment variable is not set or has length 0 OR if the
# exit code is non-zero and prints "message"
# NOTE: env-var is the variable name without a '$'
# err_if_not_set $LINENO env-var "message"
function err_if_not_set {
local exitcode=$?
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local line=$1; shift
local evar=$1; shift
if ! is_set $evar || [ $exitcode != 0 ]; then
err $line "$*"
fi
$xtrace
return $exitcode
}
# Exit after outputting a message about the distribution not being supported.
# exit_distro_not_supported [optional-string-telling-what-is-missing]
function exit_distro_not_supported {
if [[ -z "$DISTRO" ]]; then
GetDistro
fi
if [ $# -gt 0 ]; then
die $LINENO "Support for $DISTRO is incomplete: no support for $@"
else
die $LINENO "Support for $DISTRO is incomplete."
fi
}
# Test if the named environment variable is set and not zero length
# is_set env-var
function is_set {
local var=\$"$1"
eval "[ -n \"$var\" ]" # For ex.: sh -c "[ -n \"$var\" ]" would be better, but several exercises depends on this
}
# Prints line number and "message" in warning format
# warn $LINENO "message"
function warn {
local exitcode=$?
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local msg="[WARNING] ${BASH_SOURCE[2]}:$1 $2"
echo $msg
$xtrace
return $exitcode
}
# Distro Functions
# ================
# Determine OS Vendor, Release and Update
#
# NOTE : For portability, you almost certainly do not want to use
# these variables directly! The "is_*" functions defined below this
# bundle up compatible platforms under larger umbrellas that we have
# determinted are compatible enough (e.g. is_ubuntu covers Ubuntu &
# Debian, is_fedora covers RPM-based distros). Higher-level functions
# such as "install_package" further abstract things in better ways.
#
# ``os_VENDOR`` - vendor name: ``Ubuntu``, ``Fedora``, etc
# ``os_RELEASE`` - major release: ``14.04`` (Ubuntu), ``20`` (Fedora)
# ``os_PACKAGE`` - package type: ``deb`` or ``rpm``
# ``os_CODENAME`` - vendor's codename for release: ``trusty``
declare os_VENDOR os_RELEASE os_PACKAGE os_CODENAME
# Make a *best effort* attempt to install lsb_release packages for the
# user if not available. Note can't use generic install_package*
# because they depend on this!
function _ensure_lsb_release {
if [[ -x $(command -v lsb_release 2>/dev/null) ]]; then
return
fi
if [[ -x $(command -v apt-get 2>/dev/null) ]]; then
sudo apt-get install -y lsb-release
elif [[ -x $(command -v zypper 2>/dev/null) ]]; then
# XXX: old code paths seem to have assumed SUSE platforms also
# had "yum". Keep this ordered above yum so we don't try to
# install the rh package. suse calls it just "lsb"
sudo zypper -n install lsb
elif [[ -x $(command -v dnf 2>/dev/null) ]]; then
sudo dnf install -y redhat-lsb-core
elif [[ -x $(command -v yum 2>/dev/null) ]]; then
# all rh patforms (fedora, centos, rhel) have this pkg
sudo yum install -y redhat-lsb-core
else
die $LINENO "Unable to find or auto-install lsb_release"
fi
}
# GetOSVersion
# Set the following variables:
# - os_RELEASE
# - os_CODENAME
# - os_VENDOR
# - os_PACKAGE
function GetOSVersion {
# We only support distros that provide a sane lsb_release
_ensure_lsb_release
os_RELEASE=$(lsb_release -r -s)
os_CODENAME=$(lsb_release -c -s)
os_VENDOR=$(lsb_release -i -s)
if [[ $os_VENDOR =~ (Debian|Ubuntu|LinuxMint) ]]; then
os_PACKAGE="deb"
else
os_PACKAGE="rpm"
fi
typeset -xr os_VENDOR
typeset -xr os_RELEASE
typeset -xr os_PACKAGE
typeset -xr os_CODENAME
}
# Translate the OS version values into common nomenclature
# Sets global ``DISTRO`` from the ``os_*`` values
declare DISTRO
function GetDistro {
GetOSVersion
if [[ "$os_VENDOR" =~ (Ubuntu) || "$os_VENDOR" =~ (Debian) || \
"$os_VENDOR" =~ (LinuxMint) ]]; then
# 'Everyone' refers to Ubuntu / Debian / Mint releases by
# the code name adjective
DISTRO=$os_CODENAME
elif [[ "$os_VENDOR" =~ (Fedora) ]]; then
# For Fedora, just use 'f' and the release
DISTRO="f$os_RELEASE"
elif [[ "$os_VENDOR" =~ (openSUSE) ]]; then
DISTRO="opensuse-$os_RELEASE"
elif [[ "$os_VENDOR" =~ (SUSE LINUX) ]]; then
# just use major release
DISTRO="sle${os_RELEASE%.*}"
elif [[ "$os_VENDOR" =~ (Red.*Hat) || \
"$os_VENDOR" =~ (CentOS) || \
"$os_VENDOR" =~ (Scientific) || \
"$os_VENDOR" =~ (OracleServer) || \
"$os_VENDOR" =~ (Virtuozzo) ]]; then
# Drop the . release as we assume it's compatible
# XXX re-evaluate when we get RHEL10
DISTRO="rhel${os_RELEASE::1}"
elif [[ "$os_VENDOR" =~ (XenServer) ]]; then
DISTRO="xs${os_RELEASE%.*}"
elif [[ "$os_VENDOR" =~ (kvmibm) ]]; then
DISTRO="${os_VENDOR}${os_RELEASE::1}"
else
# We can't make a good choice here. Setting a sensible DISTRO
# is part of the problem, but not the major issue -- we really
# only use DISTRO in the code as a fine-filter.
#
# The bigger problem is categorising the system into one of
# our two big categories as Ubuntu/Debian-ish or
# Fedora/CentOS-ish.
#
# The setting of os_PACKAGE above is only set to "deb" based
# on a hard-coded list of vendor names ... thus we will
# default to thinking unknown distros are RPM based
# (ie. is_ubuntu does not match). But the platform will then
# also not match in is_fedora, because that also has a list of
# names.
#
# So, if you are reading this, getting your distro supported
# is really about making sure it matches correctly in these
# functions. Then you can choose a sensible way to construct
# DISTRO based on your distros release approach.
die $LINENO "Unable to determine DISTRO, can not continue."
fi
typeset -xr DISTRO
}
# Utility function for checking machine architecture
# is_arch arch-type
function is_arch {
[[ "$(uname -m)" == "$1" ]]
}
# Determine if current distribution is an Oracle distribution
# is_oraclelinux
function is_oraclelinux {
if [[ -z "$os_VENDOR" ]]; then
GetOSVersion
fi
[ "$os_VENDOR" = "OracleServer" ]
}
# Determine if current distribution is a Fedora-based distribution
# (Fedora, RHEL, CentOS, etc).
# is_fedora
function is_fedora {
if [[ -z "$os_VENDOR" ]]; then
GetOSVersion
fi
[ "$os_VENDOR" = "Fedora" ] || [ "$os_VENDOR" = "Red Hat" ] || \
[ "$os_VENDOR" = "RedHatEnterpriseServer" ] || \
[ "$os_VENDOR" = "CentOS" ] || [ "$os_VENDOR" = "OracleServer" ] || \
[ "$os_VENDOR" = "Virtuozzo" ] || [ "$os_VENDOR" = "kvmibm" ]
}
# Determine if current distribution is a SUSE-based distribution
# (openSUSE, SLE).
# is_suse
function is_suse {
if [[ -z "$os_VENDOR" ]]; then
GetOSVersion
fi
[[ "$os_VENDOR" =~ (openSUSE) || "$os_VENDOR" == "SUSE LINUX" ]]
}
# Determine if current distribution is an Ubuntu-based distribution
# It will also detect non-Ubuntu but Debian-based distros
# is_ubuntu
function is_ubuntu {
if [[ -z "$os_PACKAGE" ]]; then
GetOSVersion
fi
[ "$os_PACKAGE" = "deb" ]
}
# Git Functions
# =============
# Returns openstack release name for a given branch name
# ``get_release_name_from_branch branch-name``
function get_release_name_from_branch {
local branch=$1
if [[ $branch =~ "stable/" || $branch =~ "proposed/" ]]; then
echo ${branch#*/}
else
echo "master"
fi
}
# git clone only if directory doesn't exist already. Since ``DEST`` might not
# be owned by the installation user, we create the directory and change the
# ownership to the proper user.
# Set global ``RECLONE=yes`` to simulate a clone when dest-dir exists
# Set global ``ERROR_ON_CLONE=True`` to abort execution with an error if the git repo
# does not exist (default is False, meaning the repo will be cloned).
# Uses globals ``ERROR_ON_CLONE``, ``OFFLINE``, ``RECLONE``
# git_clone remote dest-dir branch
function git_clone {
local git_remote=$1
local git_dest=$2
local git_ref=$3
local orig_dir
orig_dir=$(pwd)
local git_clone_flags=""
RECLONE=$(trueorfalse False RECLONE)
if [[ "${GIT_DEPTH}" -gt 0 ]]; then
git_clone_flags="$git_clone_flags --depth $GIT_DEPTH"
fi
if [[ "$OFFLINE" = "True" ]]; then
echo "Running in offline mode, clones already exist"
# print out the results so we know what change was used in the logs
cd $git_dest
git show --oneline | head -1
cd $orig_dir
return
fi
if echo $git_ref | egrep -q "^refs"; then
# If our branch name is a gerrit style refs/changes/...
if [[ ! -d $git_dest ]]; then
if [[ "$ERROR_ON_CLONE" = "True" ]]; then
echo "The $git_dest project was not found; if this is a gate job, add"
echo "the project to the \$PROJECTS variable in the job definition."
die $LINENO "Cloning not allowed in this configuration"
fi
git_timed clone $git_clone_flags $git_remote $git_dest
fi
cd $git_dest
git_timed fetch $git_remote $git_ref && git checkout FETCH_HEAD
else
# do a full clone only if the directory doesn't exist
if [[ ! -d $git_dest ]]; then
if [[ "$ERROR_ON_CLONE" = "True" ]]; then
echo "The $git_dest project was not found; if this is a gate job, add"
echo "the project to the \$PROJECTS variable in the job definition."
die $LINENO "Cloning not allowed in this configuration"
fi
git_timed clone $git_clone_flags $git_remote $git_dest
cd $git_dest
# This checkout syntax works for both branches and tags
git checkout $git_ref
elif [[ "$RECLONE" = "True" ]]; then
# if it does exist then simulate what clone does if asked to RECLONE
cd $git_dest
# set the url to pull from and fetch
git remote set-url origin $git_remote
git_timed fetch origin
# remove the existing ignored files (like pyc) as they cause breakage
# (due to the py files having older timestamps than our pyc, so python
# thinks the pyc files are correct using them)
find $git_dest -name '*.pyc' -delete
# handle git_ref accordingly to type (tag, branch)
if [[ -n "`git show-ref refs/tags/$git_ref`" ]]; then
git_update_tag $git_ref
elif [[ -n "`git show-ref refs/heads/$git_ref`" ]]; then
git_update_branch $git_ref
elif [[ -n "`git show-ref refs/remotes/origin/$git_ref`" ]]; then
git_update_remote_branch $git_ref
else
die $LINENO "$git_ref is neither branch nor tag"
fi
fi
fi
# print out the results so we know what change was used in the logs
cd $git_dest
git show --oneline | head -1
cd $orig_dir
}
# A variation on git clone that lets us specify a project by it's
# actual name, like oslo.config. This is exceptionally useful in the
# library installation case
function git_clone_by_name {
local name=$1
local repo=${GITREPO[$name]}
local dir=${GITDIR[$name]}
local branch=${GITBRANCH[$name]}
git_clone $repo $dir $branch
}
# git can sometimes get itself infinitely stuck with transient network
# errors or other issues with the remote end. This wraps git in a
# timeout/retry loop and is intended to watch over non-local git
# processes that might hang. GIT_TIMEOUT, if set, is passed directly
# to timeout(1); otherwise the default value of 0 maintains the status
# quo of waiting forever.
# usage: git_timed <git-command>
function git_timed {
local count=0
local timeout=0
if [[ -n "${GIT_TIMEOUT}" ]]; then
timeout=${GIT_TIMEOUT}
fi
time_start "git_timed"
until timeout -s SIGINT ${timeout} git "$@"; do
# 124 is timeout(1)'s special return code when it reached the
# timeout; otherwise assume fatal failure
if [[ $? -ne 124 ]]; then
die $LINENO "git call failed: [git $@]"
fi
count=$(($count + 1))
warn $LINENO "timeout ${count} for git call: [git $@]"
if [ $count -eq 3 ]; then
die $LINENO "Maximum of 3 git retries reached"
fi
sleep 5
done
time_stop "git_timed"
}
# git update using reference as a branch.
# git_update_branch ref
function git_update_branch {
local git_branch=$1
git checkout -f origin/$git_branch
# a local branch might not exist
git branch -D $git_branch || true
git checkout -b $git_branch
}
# git update using reference as a branch.
# git_update_remote_branch ref
function git_update_remote_branch {
local git_branch=$1
git checkout -b $git_branch -t origin/$git_branch
}
# git update using reference as a tag. Be careful editing source at that repo
# as working copy will be in a detached mode
# git_update_tag ref
function git_update_tag {
local git_tag=$1
git tag -d $git_tag
# fetching given tag only
git_timed fetch origin tag $git_tag
git checkout -f $git_tag
}
# OpenStack Functions
# ===================
# Get the default value for HOST_IP
# get_default_host_ip fixed_range floating_range host_ip_iface host_ip
function get_default_host_ip {
local fixed_range=$1
local floating_range=$2
local host_ip_iface=$3
local host_ip=$4
local af=$5
# Search for an IP unless an explicit is set by ``HOST_IP`` environment variable
if [ -z "$host_ip" -o "$host_ip" == "dhcp" ]; then
host_ip=""
# Find the interface used for the default route
host_ip_iface=${host_ip_iface:-$(ip -f $af route | awk '/default/ {print $5}' | head -1)}
local host_ips
host_ips=$(LC_ALL=C ip -f $af addr show ${host_ip_iface} | sed /temporary/d |awk /$af'/ {split($2,parts,"/"); print parts[1]}')
local ip
for ip in $host_ips; do
# Attempt to filter out IP addresses that are part of the fixed and
# floating range. Note that this method only works if the ``netaddr``
# python library is installed. If it is not installed, an error
# will be printed and the first IP from the interface will be used.
# If that is not correct set ``HOST_IP`` in ``localrc`` to the correct
# address.
if [[ "$af" == "inet6" ]]; then
host_ip=$ip
break;
fi
if ! (address_in_net $ip $fixed_range || address_in_net $ip $floating_range); then
host_ip=$ip
break;
fi
done
fi
echo $host_ip
}
# Generates hex string from ``size`` byte of pseudo random data
# generate_hex_string size
function generate_hex_string {
local size=$1
hexdump -n "$size" -v -e '/1 "%02x"' /dev/urandom
}
# Grab a numbered field from python prettytable output
# Fields are numbered starting with 1
# Reverse syntax is supported: -1 is the last field, -2 is second to last, etc.
# get_field field-number
function get_field {
local data field
while read data; do
if [ "$1" -lt 0 ]; then
field="(\$(NF$1))"
else
field="\$$(($1 + 1))"
fi
echo "$data" | awk -F'[ \t]*\\|[ \t]*' "{print $field}"
done
}
# install default policy
# copy over a default policy.json and policy.d for projects
function install_default_policy {
local project=$1
local project_uc
project_uc=$(echo $1|tr a-z A-Z)
local conf_dir="${project_uc}_CONF_DIR"
# eval conf dir to get the variable
conf_dir="${!conf_dir}"
local project_dir="${project_uc}_DIR"
# eval project dir to get the variable
project_dir="${!project_dir}"
local sample_conf_dir="${project_dir}/etc/${project}"
local sample_policy_dir="${project_dir}/etc/${project}/policy.d"
# first copy any policy.json
cp -p $sample_conf_dir/policy.json $conf_dir
# then optionally copy over policy.d
if [[ -d $sample_policy_dir ]]; then
cp -r $sample_policy_dir $conf_dir/policy.d
fi
}
# Add a policy to a policy.json file
# Do nothing if the policy already exists
# ``policy_add policy_file policy_name policy_permissions``
function policy_add {
local policy_file=$1
local policy_name=$2
local policy_perm=$3
if grep -q ${policy_name} ${policy_file}; then
echo "Policy ${policy_name} already exists in ${policy_file}"
return
fi
# Add a terminating comma to policy lines without one
# Remove the closing '}' and all lines following to the end-of-file
local tmpfile
tmpfile=$(mktemp)
uniq ${policy_file} | sed -e '
s/]$/],/
/^[}]/,$d
' > ${tmpfile}
# Append policy and closing brace
echo " \"${policy_name}\": ${policy_perm}" >>${tmpfile}
echo "}" >>${tmpfile}
mv ${tmpfile} ${policy_file}
}
# Gets or creates a domain
# Usage: get_or_create_domain <name> <description>
function get_or_create_domain {
local domain_id
# Gets domain id
domain_id=$(
# Gets domain id
openstack domain show $1 \
-f value -c id 2>/dev/null ||
# Creates new domain
openstack domain create $1 \
--description "$2" \
-f value -c id
)
echo $domain_id
}
# Gets or creates group
# Usage: get_or_create_group <groupname> <domain> [<description>]
function get_or_create_group {
local desc="${3:-}"
local group_id
# Gets group id
group_id=$(
# Creates new group with --or-show
openstack group create $1 \
--domain $2 --description "$desc" --or-show \
-f value -c id
)
echo $group_id
}
# Gets or creates user
# Usage: get_or_create_user <username> <password> <domain> [<email>]
function get_or_create_user {
local user_id
if [[ ! -z "$4" ]]; then
local email="--email=$4"
else
local email=""
fi
# Gets user id
user_id=$(
# Creates new user with --or-show
openstack user create \
$1 \
--password "$2" \
--domain=$3 \
$email \
--or-show \
-f value -c id
)
echo $user_id
}
# Gets or creates project
# Usage: get_or_create_project <name> <domain>
function get_or_create_project {
local project_id
project_id=$(
# Creates new project with --or-show
openstack project create $1 \
--domain=$2 \
--or-show -f value -c id
)
echo $project_id
}
# Gets or creates role
# Usage: get_or_create_role <name>
function get_or_create_role {
local role_id
role_id=$(
# Creates role with --or-show
openstack role create $1 \
--or-show -f value -c id
)
echo $role_id
}
# Returns the domain parts of a function call if present
# Usage: _get_domain_args [<user_domain> <project_domain>]
function _get_domain_args {
local domain
domain=""
if [[ -n "$1" ]]; then
domain="$domain --user-domain $1"
fi
if [[ -n "$2" ]]; then
domain="$domain --project-domain $2"
fi
echo $domain
}
# Gets or adds user role to project
# Usage: get_or_add_user_project_role <role> <user> <project> [<user_domain> <project_domain>]
function get_or_add_user_project_role {
local user_role_id
domain_args=$(_get_domain_args $4 $5)
# Gets user role id
user_role_id=$(openstack role list \
--user $2 \
--column "ID" \
--project $3 \
--column "Name" \
$domain_args \
| grep " $1 " | get_field 1)
if [[ -z "$user_role_id" ]]; then
# Adds role to user and get it
openstack role add $1 \
--user $2 \
--project $3 \
$domain_args
user_role_id=$(openstack role list \
--user $2 \
--column "ID" \
--project $3 \
--column "Name" \
$domain_args \
| grep " $1 " | get_field 1)
fi
echo $user_role_id
}
# Gets or adds user role to domain
# Usage: get_or_add_user_domain_role <role> <user> <domain>
function get_or_add_user_domain_role {
local user_role_id
# Gets user role id
user_role_id=$(openstack role list \
--user $2 \
--column "ID" \
--domain $3 \
--column "Name" \
| grep " $1 " | get_field 1)
if [[ -z "$user_role_id" ]]; then
# Adds role to user and get it
openstack role add $1 \
--user $2 \
--domain $3
user_role_id=$(openstack role list \
--user $2 \
--column "ID" \
--domain $3 \
--column "Name" \
| grep " $1 " | get_field 1)
fi
echo $user_role_id
}
# Gets or adds user role to domain
# Usage: get_or_add_user_domain_role <role> <user> <domain>
function get_or_add_user_domain_role {
local user_role_id
# Gets user role id
user_role_id=$(openstack role list \
--user $2 \
--os-url=$KEYSTONE_SERVICE_URI_V3 \
--os-identity-api-version=3 \
--column "ID" \
--domain $3 \
--column "Name" \
| grep " $1 " | get_field 1)
if [[ -z "$user_role_id" ]]; then
# Adds role to user and get it
openstack role add $1 \
--user $2 \
--domain $3 \
--os-url=$KEYSTONE_SERVICE_URI_V3 \
--os-identity-api-version=3
user_role_id=$(openstack role list \
--user $2 \
--os-url=$KEYSTONE_SERVICE_URI_V3 \
--os-identity-api-version=3 \
--column "ID" \
--domain $3 \
--column "Name" \
| grep " $1 " | get_field 1)
fi
echo $user_role_id
}
# Gets or adds group role to project
# Usage: get_or_add_group_project_role <role> <group> <project>
function get_or_add_group_project_role {
local group_role_id
# Gets group role id
group_role_id=$(openstack role list \
--group $2 \
--project $3 \
-c "ID" -f value)
if [[ -z "$group_role_id" ]]; then
# Adds role to group and get it
openstack role add $1 \
--group $2 \
--project $3
group_role_id=$(openstack role list \
--group $2 \
--project $3 \
-c "ID" -f value)
fi
echo $group_role_id
}
# Gets or creates service
# Usage: get_or_create_service <name> <type> <description>
function get_or_create_service {
local service_id
# Gets service id
service_id=$(
# Gets service id
openstack service show $2 -f value -c id 2>/dev/null ||
# Creates new service if not exists
openstack service create \
$2 \
--name $1 \
--description="$3" \
-f value -c id
)
echo $service_id
}
# Create an endpoint with a specific interface
# Usage: _get_or_create_endpoint_with_interface <service> <interface> <url> <region>
function _get_or_create_endpoint_with_interface {
local endpoint_id
endpoint_id=$(openstack endpoint list \
--service $1 \
--interface $2 \
--region $4 \
-c ID -f value)
if [[ -z "$endpoint_id" ]]; then
# Creates new endpoint
endpoint_id=$(openstack endpoint create \
$1 $2 $3 --region $4 -f value -c id)
fi
echo $endpoint_id
}
# Gets or creates endpoint
# Usage: get_or_create_endpoint <service> <region> <publicurl> <adminurl> <internalurl>
function get_or_create_endpoint {
# NOTE(jamielennnox): when converting to v3 endpoint creation we go from
# creating one endpoint with multiple urls to multiple endpoints each with
# a different interface. To maintain the existing function interface we
# create 3 endpoints and return the id of the public one. In reality
# returning the public id will not make a lot of difference as there are no
# scenarios currently that use the returned id. Ideally this behaviour
# should be pushed out to the service setups and let them create the
# endpoints they need.
local public_id
public_id=$(_get_or_create_endpoint_with_interface $1 public $3 $2)
_get_or_create_endpoint_with_interface $1 admin $4 $2
_get_or_create_endpoint_with_interface $1 internal $5 $2
# return the public id to indicate success, and this is the endpoint most likely wanted
echo $public_id
}
# Get a URL from the identity service
# Usage: get_endpoint_url <service> <interface>
function get_endpoint_url {
echo $(openstack endpoint list \
--service $1 --interface $2 \
-c URL -f value)
}
# check if we are using ironic with hardware
# TODO(jroll) this is a kludge left behind when ripping ironic code
# out of tree, as it is used by nova and neutron.
# figure out a way to refactor nova/neutron code to eliminate this
function is_ironic_hardware {
is_service_enabled ironic && [[ "$IRONIC_IS_HARDWARE" == "True" ]] && return 0
return 1
}
# Package Functions
# =================
# _get_package_dir
function _get_package_dir {
local base_dir=$1
local pkg_dir
if [[ -z "$base_dir" ]]; then
base_dir=$FILES
fi
if is_ubuntu; then
pkg_dir=$base_dir/debs
elif is_fedora; then
pkg_dir=$base_dir/rpms
elif is_suse; then
pkg_dir=$base_dir/rpms-suse
else
exit_distro_not_supported "list of packages"
fi
echo "$pkg_dir"
}
# Wrapper for ``apt-get update`` to try multiple times on the update
# to address bad package mirrors (which happen all the time).
function apt_get_update {
# only do this once per run
if [[ "$REPOS_UPDATED" == "True" && "$RETRY_UPDATE" != "True" ]]; then
return
fi
# bail if we are offline
[[ "$OFFLINE" = "True" ]] && return
local sudo="sudo"
[[ "$(id -u)" = "0" ]] && sudo="env"
# time all the apt operations
time_start "apt-get-update"
local proxies="http_proxy=${http_proxy:-} https_proxy=${https_proxy:-} no_proxy=${no_proxy:-} "
local update_cmd="$sudo $proxies apt-get update"
if ! timeout 300 sh -c "while ! $update_cmd; do sleep 30; done"; then
die $LINENO "Failed to update apt repos, we're dead now"
fi
REPOS_UPDATED=True
# stop the clock
time_stop "apt-get-update"
}
# Wrapper for ``apt-get`` to set cache and proxy environment variables
# Uses globals ``OFFLINE``, ``*_proxy``
# apt_get operation package [package ...]
function apt_get {
local xtrace result
xtrace=$(set +o | grep xtrace)
set +o xtrace
[[ "$OFFLINE" = "True" || -z "$@" ]] && return
local sudo="sudo"
[[ "$(id -u)" = "0" ]] && sudo="env"
# time all the apt operations
time_start "apt-get"
$xtrace
$sudo DEBIAN_FRONTEND=noninteractive \
http_proxy=${http_proxy:-} https_proxy=${https_proxy:-} \
no_proxy=${no_proxy:-} \
apt-get --option "Dpkg::Options::=--force-confold" --assume-yes "$@" < /dev/null
result=$?
# stop the clock
time_stop "apt-get"
return $result
}
function _parse_package_files {
local files_to_parse=$@
if [[ -z "$DISTRO" ]]; then
GetDistro
fi
for fname in ${files_to_parse}; do
local OIFS line package distros distro
[[ -e $fname ]] || continue
OIFS=$IFS
IFS=$'\n'
for line in $(<${fname}); do
if [[ $line =~ "NOPRIME" ]]; then
continue
fi
# Assume we want this package; free-form
# comments allowed after a #
package=${line%%#*}
inst_pkg=1
# Look for # dist:xxx in comment
if [[ $line =~ (.*)#.*dist:([^ ]*) ]]; then
# We are using BASH regexp matching feature.
package=${BASH_REMATCH[1]}
distros=${BASH_REMATCH[2]}
# In bash ${VAR,,} will lowercase VAR
# Look for a match in the distro list
if [[ ! ${distros,,} =~ ${DISTRO,,} ]]; then
# If no match then skip this package
inst_pkg=0
fi
fi
if [[ $inst_pkg = 1 ]]; then
echo $package
fi
done
IFS=$OIFS
done
}
# get_packages() collects a list of package names of any type from the
# prerequisite files in ``files/{debs|rpms}``. The list is intended
# to be passed to a package installer such as apt or yum.
#
# Only packages required for the services in 1st argument will be
# included. Two bits of metadata are recognized in the prerequisite files:
#
# - ``# NOPRIME`` defers installation to be performed later in `stack.sh`
# - ``# dist:DISTRO`` or ``dist:DISTRO1,DISTRO2`` limits the selection
# of the package to the distros listed. The distro names are case insensitive.
function get_packages {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local services=$@
local package_dir
package_dir=$(_get_package_dir)
local file_to_parse=""
local service=""
if [ $# -ne 1 ]; then
die $LINENO "get_packages takes a single, comma-separated argument"
fi
if [[ -z "$package_dir" ]]; then
echo "No package directory supplied"
return 1
fi
for service in ${services//,/ }; do
# Allow individual services to specify dependencies
if [[ -e ${package_dir}/${service} ]]; then
file_to_parse="${file_to_parse} ${package_dir}/${service}"
fi
# NOTE(sdague) n-api needs glance for now because that's where
# glance client is
if [[ $service == n-api ]]; then
if [[ ! $file_to_parse =~ $package_dir/nova ]]; then
file_to_parse="${file_to_parse} ${package_dir}/nova"
fi
if [[ ! $file_to_parse =~ $package_dir/glance ]]; then
file_to_parse="${file_to_parse} ${package_dir}/glance"
fi
elif [[ $service == c-* ]]; then
if [[ ! $file_to_parse =~ $package_dir/cinder ]]; then
file_to_parse="${file_to_parse} ${package_dir}/cinder"
fi
elif [[ $service == s-* ]]; then
if [[ ! $file_to_parse =~ $package_dir/swift ]]; then
file_to_parse="${file_to_parse} ${package_dir}/swift"
fi
elif [[ $service == n-* ]]; then
if [[ ! $file_to_parse =~ $package_dir/nova ]]; then
file_to_parse="${file_to_parse} ${package_dir}/nova"
fi
elif [[ $service == g-* ]]; then
if [[ ! $file_to_parse =~ $package_dir/glance ]]; then
file_to_parse="${file_to_parse} ${package_dir}/glance"
fi
elif [[ $service == key* ]]; then
if [[ ! $file_to_parse =~ $package_dir/keystone ]]; then
file_to_parse="${file_to_parse} ${package_dir}/keystone"
fi
elif [[ $service == q-* ]]; then
if [[ ! $file_to_parse =~ $package_dir/neutron ]]; then
file_to_parse="${file_to_parse} ${package_dir}/neutron"
fi
elif [[ $service == ir-* ]]; then
if [[ ! $file_to_parse =~ $package_dir/ironic ]]; then
file_to_parse="${file_to_parse} ${package_dir}/ironic"
fi
fi
done
echo "$(_parse_package_files $file_to_parse)"
$xtrace
}
# get_plugin_packages() collects a list of package names of any type from a
# plugin's prerequisite files in ``$PLUGIN/devstack/files/{debs|rpms}``. The
# list is intended to be passed to a package installer such as apt or yum.
#
# Only packages required for enabled and collected plugins will included.
#
# The same metadata used in the main DevStack prerequisite files may be used
# in these prerequisite files, see get_packages() for more info.
function get_plugin_packages {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local files_to_parse=""
local package_dir=""
for plugin in ${DEVSTACK_PLUGINS//,/ }; do
package_dir="$(_get_package_dir ${GITDIR[$plugin]}/devstack/files)"
files_to_parse+=" $package_dir/$plugin"
done
echo "$(_parse_package_files $files_to_parse)"
$xtrace
}
# Distro-agnostic package installer
# Uses globals ``NO_UPDATE_REPOS``, ``REPOS_UPDATED``, ``RETRY_UPDATE``
# install_package package [package ...]
function update_package_repo {
NO_UPDATE_REPOS=${NO_UPDATE_REPOS:-False}
REPOS_UPDATED=${REPOS_UPDATED:-False}
RETRY_UPDATE=${RETRY_UPDATE:-False}
if [[ "$NO_UPDATE_REPOS" = "True" ]]; then
return 0
fi
if is_ubuntu; then
apt_get_update
fi
}
function real_install_package {
if is_ubuntu; then
apt_get install "$@"
elif is_fedora; then
yum_install "$@"
elif is_suse; then
zypper_install "$@"
else
exit_distro_not_supported "installing packages"
fi
}
# Distro-agnostic package installer
# install_package package [package ...]
function install_package {
update_package_repo
if ! real_install_package "$@"; then
RETRY_UPDATE=True update_package_repo && real_install_package "$@"
fi
}
# Distro-agnostic function to tell if a package is installed
# is_package_installed package [package ...]
function is_package_installed {
if [[ -z "$@" ]]; then
return 1
fi
if [[ -z "$os_PACKAGE" ]]; then
GetOSVersion
fi
if [[ "$os_PACKAGE" = "deb" ]]; then
dpkg -s "$@" > /dev/null 2> /dev/null
elif [[ "$os_PACKAGE" = "rpm" ]]; then
rpm --quiet -q "$@"
else
exit_distro_not_supported "finding if a package is installed"
fi
}
# Distro-agnostic package uninstaller
# uninstall_package package [package ...]
function uninstall_package {
if is_ubuntu; then
apt_get purge "$@"
elif is_fedora; then
sudo ${YUM:-yum} remove -y "$@" ||:
elif is_suse; then
sudo zypper rm "$@" ||:
else
exit_distro_not_supported "uninstalling packages"
fi
}
# Wrapper for ``yum`` to set proxy environment variables
# Uses globals ``OFFLINE``, ``*_proxy``, ``YUM``
# yum_install package [package ...]
function yum_install {
local result parse_yum_result
[[ "$OFFLINE" = "True" ]] && return
time_start "yum_install"
# - We run with LC_ALL=C so string matching *should* be OK
# - Exit 1 if the failure might get better with a retry.
# - Exit 2 if it is fatal.
parse_yum_result=' \
BEGIN { result=0 } \
/^YUM_FAILED/ { exit $2 } \
/^No package/ { result=2 } \
/^Failed:/ { result=2 } \
//{ print } \
END { exit result }'
# The manual check for missing packages is because yum -y assumes
# missing or failed packages are OK.
# See https://bugzilla.redhat.com/show_bug.cgi?id=965567
(sudo_with_proxies "${YUM:-yum}" install -y "$@" 2>&1 || echo YUM_FAILED $?) \
| awk "$parse_yum_result" && result=$? || result=$?
time_stop "yum_install"
# if we return 1, then the wrapper functions will run an update
# and try installing the package again as a defense against bad
# mirrors. This can hide failures, especially when we have
# packages that are in the "Failed:" section because their rpm
# install scripts failed to run correctly (in this case, the
# package looks installed, so when the retry happens we just think
# the package is OK, and incorrectly continue on).
if [ "$result" == 2 ]; then
die "Detected fatal package install failure"
fi
return "$result"
}
# zypper wrapper to set arguments correctly
# Uses globals ``OFFLINE``, ``*_proxy``
# zypper_install package [package ...]
function zypper_install {
[[ "$OFFLINE" = "True" ]] && return
local sudo="sudo"
[[ "$(id -u)" = "0" ]] && sudo="env"
$sudo http_proxy="${http_proxy:-}" https_proxy="${https_proxy:-}" \
no_proxy="${no_proxy:-}" \
zypper --non-interactive install --auto-agree-with-licenses "$@"
}
# Process Functions
# =================
# _run_process() is designed to be backgrounded by run_process() to simulate a
# fork. It includes the dirty work of closing extra filehandles and preparing log
# files to produce the same logs as screen_it(). The log filename is derived
# from the service name.
# Uses globals ``CURRENT_LOG_TIME``, ``LOGDIR``, ``SCREEN_LOGDIR``, ``SCREEN_NAME``, ``SERVICE_DIR``
# If an optional group is provided sg will be used to set the group of
# the command.
# _run_process service "command-line" [group]
function _run_process {
# disable tracing through the exec redirects, it's just confusing in the logs.
xtrace=$(set +o | grep xtrace)
set +o xtrace
local service=$1
local command="$2"
local group=$3
# Undo logging redirections and close the extra descriptors
exec 1>&3
exec 2>&3
exec 3>&-
exec 6>&-
local logfile="${service}.log.${CURRENT_LOG_TIME}"
local real_logfile="${LOGDIR}/${logfile}"
if [[ -n ${LOGDIR} ]]; then
exec 1>&"$real_logfile" 2>&1
bash -c "cd '$LOGDIR' && ln -sf '$logfile' ${service}.log"
if [[ -n ${SCREEN_LOGDIR} ]]; then
# Drop the backward-compat symlink
ln -sf "$real_logfile" ${SCREEN_LOGDIR}/screen-${service}.log
fi
# TODO(dtroyer): Hack to get stdout from the Python interpreter for the logs.
export PYTHONUNBUFFERED=1
fi
# reenable xtrace before we do *real* work
$xtrace
# Run under ``setsid`` to force the process to become a session and group leader.
# The pid saved can be used with pkill -g to get the entire process group.
if [[ -n "$group" ]]; then
setsid sg $group "$command" & echo $! >$SERVICE_DIR/$SCREEN_NAME/$service.pid
else
setsid $command & echo $! >$SERVICE_DIR/$SCREEN_NAME/$service.pid
fi
# Just silently exit this process
exit 0
}
# Helper to remove the ``*.failure`` files under ``$SERVICE_DIR/$SCREEN_NAME``.
# This is used for ``service_check`` when all the ``screen_it`` are called finished
# Uses globals ``SCREEN_NAME``, ``SERVICE_DIR``
# init_service_check
function init_service_check {
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
if [[ ! -d "$SERVICE_DIR/$SCREEN_NAME" ]]; then
mkdir -p "$SERVICE_DIR/$SCREEN_NAME"
fi
rm -f "$SERVICE_DIR/$SCREEN_NAME"/*.failure
}
# Find out if a process exists by partial name.
# is_running name
function is_running {
local name=$1
ps auxw | grep -v grep | grep ${name} > /dev/null
local exitcode=$?
# some times I really hate bash reverse binary logic
return $exitcode
}
# Run a single service under screen or directly
# If the command includes shell metachatacters (;<>*) it must be run using a shell
# If an optional group is provided sg will be used to run the
# command as that group.
# Uses globals ``USE_SCREEN``
# run_process service "command-line" [group]
function run_process {
local service=$1
local command="$2"
local group=$3
local subservice=$4
local name=${subservice:-$service}
time_start "run_process"
if is_service_enabled $service; then
if [[ "$USE_SCREEN" = "True" ]]; then
screen_process "$name" "$command" "$group"
else
# Spawn directly without screen
_run_process "$name" "$command" "$group" &
fi
fi
time_stop "run_process"
}
# Helper to launch a process in a named screen
# Uses globals ``CURRENT_LOG_TIME``, ```LOGDIR``, ``SCREEN_LOGDIR``, `SCREEN_NAME``,
# ``SERVICE_DIR``, ``SCREEN_IS_LOGGING``
# screen_process name "command-line" [group]
# Run a command in a shell in a screen window, if an optional group
# is provided, use sg to set the group of the command.
function screen_process {
local name=$1
local command="$2"
local group=$3
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
screen -S $SCREEN_NAME -X screen -t $name
local logfile="${name}.log.${CURRENT_LOG_TIME}"
local real_logfile="${LOGDIR}/${logfile}"
echo "LOGDIR: $LOGDIR"
echo "SCREEN_LOGDIR: $SCREEN_LOGDIR"
echo "log: $real_logfile"
if [[ -n ${LOGDIR} ]]; then
if [[ "$SCREEN_IS_LOGGING" == "True" ]]; then
screen -S $SCREEN_NAME -p $name -X logfile "$real_logfile"
screen -S $SCREEN_NAME -p $name -X log on
fi
# If logging isn't active then avoid a broken symlink
touch "$real_logfile"
bash -c "cd '$LOGDIR' && ln -sf '$logfile' ${name}.log"
if [[ -n ${SCREEN_LOGDIR} ]]; then
# Drop the backward-compat symlink
ln -sf "$real_logfile" ${SCREEN_LOGDIR}/screen-${1}.log
fi
fi
# sleep to allow bash to be ready to be send the command - we are
# creating a new window in screen and then sends characters, so if
# bash isn't running by the time we send the command, nothing
# happens. This sleep was added originally to handle gate runs
# where we needed this to be at least 3 seconds to pass
# consistently on slow clouds. Now this is configurable so that we
# can determine a reasonable value for the local case which should
# be much smaller.
sleep ${SCREEN_SLEEP:-3}
NL=`echo -ne '\015'`
# This fun command does the following:
# - the passed server command is backgrounded
# - the pid of the background process is saved in the usual place
# - the server process is brought back to the foreground
# - if the server process exits prematurely the fg command errors
# and a message is written to stdout and the process failure file
#
# The pid saved can be used in stop_process() as a process group
# id to kill off all child processes
if [[ -n "$group" ]]; then
command="sg $group '$command'"
fi
# Append the process to the screen rc file
screen_rc "$name" "$command"
screen -S $SCREEN_NAME -p $name -X stuff "$command & echo \$! >$SERVICE_DIR/$SCREEN_NAME/${name}.pid; fg || echo \"$name failed to start\" | tee \"$SERVICE_DIR/$SCREEN_NAME/${name}.failure\"$NL"
}
# Screen rc file builder
# Uses globals ``SCREEN_NAME``, ``SCREENRC``, ``SCREEN_IS_LOGGING``
# screen_rc service "command-line"
function screen_rc {
SCREEN_NAME=${SCREEN_NAME:-stack}
SCREENRC=$TOP_DIR/$SCREEN_NAME-screenrc
if [[ ! -e $SCREENRC ]]; then
# Name the screen session
echo "sessionname $SCREEN_NAME" > $SCREENRC
# Set a reasonable statusbar
echo "hardstatus alwayslastline '$SCREEN_HARDSTATUS'" >> $SCREENRC
# Some distributions override PROMPT_COMMAND for the screen terminal type - turn that off
echo "setenv PROMPT_COMMAND /bin/true" >> $SCREENRC
echo "screen -t shell bash" >> $SCREENRC
fi
# If this service doesn't already exist in the screenrc file
if ! grep $1 $SCREENRC 2>&1 > /dev/null; then
NL=`echo -ne '\015'`
echo "screen -t $1 bash" >> $SCREENRC
echo "stuff \"$2$NL\"" >> $SCREENRC
if [[ -n ${LOGDIR} ]] && [[ "$SCREEN_IS_LOGGING" == "True" ]]; then
echo "logfile ${LOGDIR}/${1}.log.${CURRENT_LOG_TIME}" >>$SCREENRC
echo "log on" >>$SCREENRC
fi
fi
}
# Stop a service in screen
# If a PID is available use it, kill the whole process group via TERM
# If screen is being used kill the screen window; this will catch processes
# that did not leave a PID behind
# Uses globals ``SCREEN_NAME``, ``SERVICE_DIR``
# screen_stop_service service
function screen_stop_service {
local service=$1
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
if is_service_enabled $service; then
# Clean up the screen window
screen -S $SCREEN_NAME -p $service -X kill || true
fi
}
# Stop a service process
# If a PID is available use it, kill the whole process group via TERM
# If screen is being used kill the screen window; this will catch processes
# that did not leave a PID behind
# Uses globals ``SERVICE_DIR``, ``USE_SCREEN``
# stop_process service
function stop_process {
local service=$1
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
if is_service_enabled $service; then
# Kill via pid if we have one available
if [[ -r $SERVICE_DIR/$SCREEN_NAME/$service.pid ]]; then
pkill -g $(cat $SERVICE_DIR/$SCREEN_NAME/$service.pid)
# oslo.service tends to stop actually shutting down
# reliably in between releases because someone believes it
# is dying too early due to some inflight work they
# have. This is a tension. It happens often enough we're
# going to just account for it in devstack and assume it
# doesn't work.
#
# Set OSLO_SERVICE_WORKS=True to skip this block
if [[ -z "$OSLO_SERVICE_WORKS" ]]; then
# TODO(danms): Remove this double-kill when we have
# this fixed in all services:
# https://bugs.launchpad.net/oslo-incubator/+bug/1446583
sleep 1
# /bin/true because pkill on a non existent process returns an error
pkill -g $(cat $SERVICE_DIR/$SCREEN_NAME/$service.pid) || /bin/true
fi
rm $SERVICE_DIR/$SCREEN_NAME/$service.pid
fi
if [[ "$USE_SCREEN" = "True" ]]; then
# Clean up the screen window
screen_stop_service $service
fi
fi
}
# Helper to get the status of each running service
# Uses globals ``SCREEN_NAME``, ``SERVICE_DIR``
# service_check
function service_check {
local service
local failures
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
if [[ ! -d "$SERVICE_DIR/$SCREEN_NAME" ]]; then
echo "No service status directory found"
return
fi
# Check if there is any failure flag file under $SERVICE_DIR/$SCREEN_NAME
# make this -o errexit safe
failures=`ls "$SERVICE_DIR/$SCREEN_NAME"/*.failure 2>/dev/null || /bin/true`
for service in $failures; do
service=`basename $service`
service=${service%.failure}
echo "Error: Service $service is not running"
done
if [ -n "$failures" ]; then
die $LINENO "More details about the above errors can be found with screen"
fi
}
# Tail a log file in a screen if USE_SCREEN is true.
# Uses globals ``USE_SCREEN``
function tail_log {
local name=$1
local logfile=$2
if [[ "$USE_SCREEN" = "True" ]]; then
screen_process "$name" "sudo tail -f $logfile | sed 's/\\\\\\\\x1b/\o033/g'"
fi
}
# Deprecated Functions
# --------------------
# _old_run_process() is designed to be backgrounded by old_run_process() to simulate a
# fork. It includes the dirty work of closing extra filehandles and preparing log
# files to produce the same logs as screen_it(). The log filename is derived
# from the service name and global-and-now-misnamed ``SCREEN_LOGDIR``
# Uses globals ``CURRENT_LOG_TIME``, ``SCREEN_LOGDIR``, ``SCREEN_NAME``, ``SERVICE_DIR``
# _old_run_process service "command-line"
function _old_run_process {
local service=$1
local command="$2"
# Undo logging redirections and close the extra descriptors
exec 1>&3
exec 2>&3
exec 3>&-
exec 6>&-
if [[ -n ${SCREEN_LOGDIR} ]]; then
exec 1>&${SCREEN_LOGDIR}/screen-${1}.log.${CURRENT_LOG_TIME} 2>&1
ln -sf ${SCREEN_LOGDIR}/screen-${1}.log.${CURRENT_LOG_TIME} ${SCREEN_LOGDIR}/screen-${1}.log
# TODO(dtroyer): Hack to get stdout from the Python interpreter for the logs.
export PYTHONUNBUFFERED=1
fi
exec /bin/bash -c "$command"
die "$service exec failure: $command"
}
# old_run_process() launches a child process that closes all file descriptors and
# then exec's the passed in command. This is meant to duplicate the semantics
# of screen_it() without screen. PIDs are written to
# ``$SERVICE_DIR/$SCREEN_NAME/$service.pid`` by the spawned child process.
# old_run_process service "command-line"
function old_run_process {
local service=$1
local command="$2"
# Spawn the child process
_old_run_process "$service" "$command" &
echo $!
}
# Compatibility for existing start_XXXX() functions
# Uses global ``USE_SCREEN``
# screen_it service "command-line"
function screen_it {
if is_service_enabled $1; then
# Append the service to the screen rc file
screen_rc "$1" "$2"
if [[ "$USE_SCREEN" = "True" ]]; then
screen_process "$1" "$2"
else
# Spawn directly without screen
old_run_process "$1" "$2" >$SERVICE_DIR/$SCREEN_NAME/$1.pid
fi
fi
}
# Compatibility for existing stop_XXXX() functions
# Stop a service in screen
# If a PID is available use it, kill the whole process group via TERM
# If screen is being used kill the screen window; this will catch processes
# that did not leave a PID behind
# screen_stop service
function screen_stop {
# Clean up the screen window
stop_process $1
}
# Plugin Functions
# =================
DEVSTACK_PLUGINS=${DEVSTACK_PLUGINS:-""}
# enable_plugin <name> <url> [branch]
#
# ``name`` is an arbitrary name - (aka: glusterfs, nova-docker, zaqar)
# ``url`` is a git url
# ``branch`` is a gitref. If it's not set, defaults to master
function enable_plugin {
local name=$1
local url=$2
local branch=${3:-master}
DEVSTACK_PLUGINS+=",$name"
GITREPO[$name]=$url
GITDIR[$name]=$DEST/$name
GITBRANCH[$name]=$branch
}
# fetch_plugins
#
# clones all plugins
function fetch_plugins {
local plugins="${DEVSTACK_PLUGINS}"
local plugin
# short circuit if nothing to do
if [[ -z $plugins ]]; then
return
fi
echo "Fetching DevStack plugins"
for plugin in ${plugins//,/ }; do
git_clone_by_name $plugin
done
}
# load_plugin_settings
#
# Load settings from plugins in the order that they were registered
function load_plugin_settings {
local plugins="${DEVSTACK_PLUGINS}"
local plugin
# short circuit if nothing to do
if [[ -z $plugins ]]; then
return
fi
echo "Loading plugin settings"
for plugin in ${plugins//,/ }; do
local dir=${GITDIR[$plugin]}
# source any known settings
if [[ -f $dir/devstack/settings ]]; then
source $dir/devstack/settings
fi
done
}
# plugin_override_defaults
#
# Run an extremely early setting phase for plugins that allows default
# overriding of services.
function plugin_override_defaults {
local plugins="${DEVSTACK_PLUGINS}"
local plugin
# short circuit if nothing to do
if [[ -z $plugins ]]; then
return
fi
echo "Overriding Configuration Defaults"
for plugin in ${plugins//,/ }; do
local dir=${GITDIR[$plugin]}
# source any overrides
if [[ -f $dir/devstack/override-defaults ]]; then
# be really verbose that an override is happening, as it
# may not be obvious if things fail later.
echo "$plugin has overridden the following defaults"
cat $dir/devstack/override-defaults
source $dir/devstack/override-defaults
fi
done
}
# run_plugins
#
# Run the devstack/plugin.sh in all the plugin directories. These are
# run in registration order.
function run_plugins {
local mode=$1
local phase=$2
local plugins="${DEVSTACK_PLUGINS}"
local plugin
for plugin in ${plugins//,/ }; do
local dir=${GITDIR[$plugin]}
if [[ -f $dir/devstack/plugin.sh ]]; then
source $dir/devstack/plugin.sh $mode $phase
fi
done
}
function run_phase {
local mode=$1
local phase=$2
if [[ -d $TOP_DIR/extras.d ]]; then
local extra_plugin_file_name
for extra_plugin_file_name in $TOP_DIR/extras.d/*.sh; do
# NOTE(sdague): only process extras.d for the 3 explicitly
# white listed elements in tree. We want these to move out
# over time as well, but they are in tree, so we need to
# manage that.
local exceptions="80-tempest.sh"
local extra
extra=$(basename $extra_plugin_file_name)
if [[ ! ( $exceptions =~ "$extra" ) ]]; then
warn "use of extras.d is no longer supported"
warn "processing of project $extra is skipped"
else
[[ -r $extra_plugin_file_name ]] && source $extra_plugin_file_name $mode $phase
fi
done
fi
# the source phase corresponds to settings loading in plugins
if [[ "$mode" == "source" ]]; then
load_plugin_settings
verify_disabled_services
elif [[ "$mode" == "override_defaults" ]]; then
plugin_override_defaults
else
run_plugins $mode $phase
fi
}
# Service Functions
# =================
# remove extra commas from the input string (i.e. ``ENABLED_SERVICES``)
# _cleanup_service_list service-list
function _cleanup_service_list {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
echo "$1" | sed -e '
s/,,/,/g;
s/^,//;
s/,$//
'
$xtrace
}
# disable_all_services() removes all current services
# from ``ENABLED_SERVICES`` to reset the configuration
# before a minimal installation
# Uses global ``ENABLED_SERVICES``
# disable_all_services
function disable_all_services {
ENABLED_SERVICES=""
}
# Remove all services starting with '-'. For example, to install all default
# services except rabbit (rabbit) set in ``localrc``:
# ENABLED_SERVICES+=",-rabbit"
# Uses global ``ENABLED_SERVICES``
# disable_negated_services
function disable_negated_services {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local to_remove=""
local remaining=""
local service
# build up list of services that should be removed; i.e. they
# begin with "-"
for service in ${ENABLED_SERVICES//,/ }; do
if [[ ${service} == -* ]]; then
to_remove+=",${service#-}"
else
remaining+=",${service}"
fi
done
# go through the service list. if this service appears in the "to
# be removed" list, drop it
ENABLED_SERVICES=$(remove_disabled_services "$remaining" "$to_remove")
$xtrace
}
# disable_service() prepares the services passed as argument to be
# removed from the ``ENABLED_SERVICES`` list, if they are present.
#
# For example:
# disable_service rabbit
#
# Uses global ``DISABLED_SERVICES``
# disable_service service [service ...]
function disable_service {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local disabled_svcs="${DISABLED_SERVICES}"
local enabled_svcs=",${ENABLED_SERVICES},"
local service
for service in $@; do
disabled_svcs+=",$service"
if is_service_enabled $service; then
enabled_svcs=${enabled_svcs//,$service,/,}
fi
done
DISABLED_SERVICES=$(_cleanup_service_list "$disabled_svcs")
ENABLED_SERVICES=$(_cleanup_service_list "$enabled_svcs")
$xtrace
}
# enable_service() adds the services passed as argument to the
# ``ENABLED_SERVICES`` list, if they are not already present.
#
# For example:
# enable_service q-svc
#
# This function does not know about the special cases
# for nova, glance, and neutron built into is_service_enabled().
# Uses global ``ENABLED_SERVICES``
# enable_service service [service ...]
function enable_service {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local tmpsvcs="${ENABLED_SERVICES}"
local service
for service in $@; do
if [[ ,${DISABLED_SERVICES}, =~ ,${service}, ]]; then
warn $LINENO "Attempt to enable_service ${service} when it has been disabled"
continue
fi
if ! is_service_enabled $service; then
tmpsvcs+=",$service"
fi
done
ENABLED_SERVICES=$(_cleanup_service_list "$tmpsvcs")
disable_negated_services
$xtrace
}
# is_service_enabled() checks if the service(s) specified as arguments are
# enabled by the user in ``ENABLED_SERVICES``.
#
# Multiple services specified as arguments are ``OR``'ed together; the test
# is a short-circuit boolean, i.e it returns on the first match.
#
# There are special cases for some 'catch-all' services::
# **nova** returns true if any service enabled start with **n-**
# **cinder** returns true if any service enabled start with **c-**
# **glance** returns true if any service enabled start with **g-**
# **neutron** returns true if any service enabled start with **q-**
# **swift** returns true if any service enabled start with **s-**
# **trove** returns true if any service enabled start with **tr-**
# For backward compatibility if we have **swift** in ENABLED_SERVICES all the
# **s-** services will be enabled. This will be deprecated in the future.
#
# Cells within nova is enabled if **n-cell** is in ``ENABLED_SERVICES``.
# We also need to make sure to treat **n-cell-region** and **n-cell-child**
# as enabled in this case.
#
# Uses global ``ENABLED_SERVICES``
# is_service_enabled service [service ...]
function is_service_enabled {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local enabled=1
local services=$@
local service
for service in ${services}; do
[[ ,${ENABLED_SERVICES}, =~ ,${service}, ]] && enabled=0
# Look for top-level 'enabled' function for this service
if type is_${service}_enabled >/dev/null 2>&1; then
# A function exists for this service, use it
is_${service}_enabled && enabled=0
fi
# TODO(dtroyer): Remove these legacy special-cases after the is_XXX_enabled()
# are implemented
[[ ${service} == n-cell-* && ,${ENABLED_SERVICES} =~ ,"n-cell" ]] && enabled=0
[[ ${service} == n-cpu-* && ,${ENABLED_SERVICES} =~ ,"n-cpu" ]] && enabled=0
[[ ${service} == "nova" && ,${ENABLED_SERVICES} =~ ,"n-" ]] && enabled=0
[[ ${service} == "glance" && ,${ENABLED_SERVICES} =~ ,"g-" ]] && enabled=0
[[ ${service} == "neutron" && ,${ENABLED_SERVICES} =~ ,"q-" ]] && enabled=0
[[ ${service} == "trove" && ,${ENABLED_SERVICES} =~ ,"tr-" ]] && enabled=0
[[ ${service} == "swift" && ,${ENABLED_SERVICES} =~ ,"s-" ]] && enabled=0
[[ ${service} == s-* && ,${ENABLED_SERVICES} =~ ,"swift" ]] && enabled=0
done
$xtrace
return $enabled
}
# remove specified list from the input string
# remove_disabled_services service-list remove-list
function remove_disabled_services {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local service_list=$1
local remove_list=$2
local service
local enabled=""
for service in ${service_list//,/ }; do
local remove
local add=1
for remove in ${remove_list//,/ }; do
if [[ ${remove} == ${service} ]]; then
add=0
break
fi
done
if [[ $add == 1 ]]; then
enabled="${enabled},$service"
fi
done
$xtrace
_cleanup_service_list "$enabled"
}
# Toggle enable/disable_service for services that must run exclusive of each other
# $1 The name of a variable containing a space-separated list of services
# $2 The name of a variable in which to store the enabled service's name
# $3 The name of the service to enable
function use_exclusive_service {
local options=${!1}
local selection=$3
local out=$2
[ -z $selection ] || [[ ! "$options" =~ "$selection" ]] && return 1
local opt
for opt in $options;do
[[ "$opt" = "$selection" ]] && enable_service $opt || disable_service $opt
done
eval "$out=$selection"
return 0
}
# Make sure that nothing has manipulated ENABLED_SERVICES in a way
# that conflicts with prior calls to disable_service.
# Uses global ``ENABLED_SERVICES``
function verify_disabled_services {
local service
for service in ${ENABLED_SERVICES//,/ }; do
if [[ ,${DISABLED_SERVICES}, =~ ,${service}, ]]; then
die $LINENO "ENABLED_SERVICES directly modified to overcome 'disable_service ${service}'"
fi
done
}
# System Functions
# ================
# Only run the command if the target file (the last arg) is not on an
# NFS filesystem.
function _safe_permission_operation {
local xtrace
xtrace=$(set +o | grep xtrace)
set +o xtrace
local args=( $@ )
local last
local sudo_cmd
local dir_to_check
let last="${#args[*]} - 1"
local dir_to_check=${args[$last]}
if [ ! -d "$dir_to_check" ]; then
dir_to_check=`dirname "$dir_to_check"`
fi
if is_nfs_directory "$dir_to_check" ; then
$xtrace
return 0
fi
if [[ $TRACK_DEPENDS = True ]]; then
sudo_cmd="env"
else
sudo_cmd="sudo"
fi
$xtrace
$sudo_cmd $@
}
# Exit 0 if address is in network or 1 if address is not in network
# ip-range is in CIDR notation: 1.2.3.4/20
# address_in_net ip-address ip-range
function address_in_net {
local ip=$1
local range=$2
local masklen=${range#*/}
local network
network=$(maskip ${range%/*} $(cidr2netmask $masklen))
local subnet
subnet=$(maskip $ip $(cidr2netmask $masklen))
[[ $network == $subnet ]]
}
# Add a user to a group.
# add_user_to_group user group
function add_user_to_group {
local user=$1
local group=$2
sudo usermod -a -G "$group" "$user"
}
# Convert CIDR notation to a IPv4 netmask
# cidr2netmask cidr-bits
function cidr2netmask {
local maskpat="255 255 255 255"
local maskdgt="254 252 248 240 224 192 128"
set -- ${maskpat:0:$(( ($1 / 8) * 4 ))}${maskdgt:$(( (7 - ($1 % 8)) * 4 )):3}
echo ${1-0}.${2-0}.${3-0}.${4-0}
}
# Check if this is a valid ipv4 address string
function is_ipv4_address {
local address=$1
local regex='([0-9]{1,3}.){3}[0-9]{1,3}'
# TODO(clarkb) make this more robust
if [[ "$address" =~ $regex ]] ; then
return 0
else
return 1
fi
}
# Gracefully cp only if source file/dir exists
# cp_it source destination
function cp_it {
if [ -e $1 ] || [ -d $1 ]; then
cp -pRL $1 $2
fi
}
# HTTP and HTTPS proxy servers are supported via the usual environment variables [1]
# ``http_proxy``, ``https_proxy`` and ``no_proxy``. They can be set in
# ``localrc`` or on the command line if necessary::
#
# [1] http://www.w3.org/Daemon/User/Proxies/ProxyClients.html
#
# http_proxy=http://proxy.example.com:3128/ no_proxy=repo.example.net ./stack.sh
function export_proxy_variables {
if isset http_proxy ; then
export http_proxy=$http_proxy
fi
if isset https_proxy ; then
export https_proxy=$https_proxy
fi
if isset no_proxy ; then
export no_proxy=$no_proxy
fi
}
# Returns true if the directory is on a filesystem mounted via NFS.
function is_nfs_directory {
local mount_type
mount_type=`stat -f -L -c %T $1`
test "$mount_type" == "nfs"
}
# Return the network portion of the given IP address using netmask
# netmask is in the traditional dotted-quad format
# maskip ip-address netmask
function maskip {
local ip=$1
local mask=$2
local l="${ip%.*}"; local r="${ip#*.}"; local n="${mask%.*}"; local m="${mask#*.}"
local subnet
subnet=$((${ip%%.*}&${mask%%.*})).$((${r%%.*}&${m%%.*})).$((${l##*.}&${n##*.})).$((${ip##*.}&${mask##*.}))
echo $subnet
}
# Return the current python as "python<major>.<minor>"
function python_version {
local python_version
python_version=$(python -c 'import sys; print("%s.%s" % sys.version_info[0:2])')
echo "python${python_version}"
}
# Service wrapper to restart services
# restart_service service-name
function restart_service {
if [ -x /bin/systemctl ]; then
sudo /bin/systemctl restart $1
else
sudo service $1 restart
fi
}
# Only change permissions of a file or directory if it is not on an
# NFS filesystem.
function safe_chmod {
_safe_permission_operation chmod $@
}
# Only change ownership of a file or directory if it is not on an NFS
# filesystem.
function safe_chown {
_safe_permission_operation chown $@
}
# Service wrapper to start services
# start_service service-name
function start_service {
if [ -x /bin/systemctl ]; then
sudo /bin/systemctl start $1
else
sudo service $1 start
fi
}
# Service wrapper to stop services
# stop_service service-name
function stop_service {
if [ -x /bin/systemctl ]; then
sudo /bin/systemctl stop $1
else
sudo service $1 stop
fi
}
# Service wrapper to stop services
# reload_service service-name
function reload_service {
if [ -x /bin/systemctl ]; then
sudo /bin/systemctl reload $1
else
sudo service $1 reload
fi
}
# Test with a finite retry loop.
#
function test_with_retry {
local testcmd=$1
local failmsg=$2
local until=${3:-10}
local sleep=${4:-0.5}
time_start "test_with_retry"
if ! timeout $until sh -c "while ! $testcmd; do sleep $sleep; done"; then
die $LINENO "$failmsg"
fi
time_stop "test_with_retry"
}
# Like sudo but forwarding http_proxy https_proxy no_proxy environment vars.
# If it is run as superuser then sudo is replaced by env.
#
function sudo_with_proxies {
local sudo
[[ "$(id -u)" = "0" ]] && sudo="env" || sudo="sudo"
$sudo http_proxy="${http_proxy:-}" https_proxy="${https_proxy:-}"\
no_proxy="${no_proxy:-}" "$@"
}
# Timing infrastructure - figure out where large blocks of time are
# used in DevStack
#
# The timing infrastructure for DevStack is about collecting buckets
# of time that are spend in some subtask. For instance, that might be
# 'apt', 'pip', 'osc', even database migrations. We do this by a pair
# of functions: time_start / time_stop.
#
# These take a single parameter: $name - which specifies the name of
# the bucket to be accounted against. time_totals function spits out
# the results.
#
# Resolution is only in whole seconds, so should be used for long
# running activities.
declare -A _TIME_TOTAL
declare -A _TIME_START
declare -r _TIME_BEGIN=$(date +%s)
# time_start $name
#
# starts the clock for a timer by name. Errors if that clock is
# already started.
function time_start {
local name=$1
local start_time=${_TIME_START[$name]}
if [[ -n "$start_time" ]]; then
die $LINENO "Trying to start the clock on $name, but it's already been started"
fi
_TIME_START[$name]=$(date +%s)
}
# time_stop $name
#
# stops the clock for a timer by name, and accumulate that time in the
# global counter for that name. Errors if that clock had not
# previously been started.
function time_stop {
local name
local end_time
local elapsed_time
local total
local start_time
name=$1
start_time=${_TIME_START[$name]}
if [[ -z "$start_time" ]]; then
die $LINENO "Trying to stop the clock on $name, but it was never started"
fi
end_time=$(date +%s)
elapsed_time=$(($end_time - $start_time))
total=${_TIME_TOTAL[$name]:-0}
# reset the clock so we can start it in the future
_TIME_START[$name]=""
_TIME_TOTAL[$name]=$(($total + $elapsed_time))
}
# time_totals
# Print out total time summary
function time_totals {
local elapsed_time
local end_time
local len=15
local xtrace
end_time=$(date +%s)
elapsed_time=$(($end_time - $_TIME_BEGIN))
# pad 1st column this far
for t in ${!_TIME_TOTAL[*]}; do
if [[ ${#t} -gt $len ]]; then
len=${#t}
fi
done
xtrace=$(set +o | grep xtrace)
set +o xtrace
echo
echo "========================="
echo "DevStack Component Timing"
echo "========================="
printf "%-${len}s %3d\n" "Total runtime" "$elapsed_time"
echo
for t in ${!_TIME_TOTAL[*]}; do
local v=${_TIME_TOTAL[$t]}
printf "%-${len}s %3d\n" "$t" "$v"
done
echo "========================="
$xtrace
}
# Restore xtrace
$_XTRACE_FUNCTIONS_COMMON
# Local variables:
# mode: shell-script
# End:
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