install

#!/bin/bash -e
#
# Install IzoT SDK Packages
#
#   usage:  install [-s|--src]
#
#   where:  -s --src = extract source archives (default: not extracted)
#
# $Header: //depot/Software/IzoT/Dev/Install/install#11 $
#
# Copyright (c) 2013-2014 Echelon Corporation.  All rights reserved.
# 
# Use of this code is subject to your compliance with the terms of the
# Echelon IzoT(tm) Software Developer's Kit License Agreement which is
# available at www.echelon.com/license/izot_sdk/.

# display an error message on sub-command failure (for use with bash -e)
trap 'echo -e "\nERROR: Installation failed! ($?)" >&2' ERR

# pipelines will fail if any command fails (bash only)
set -o pipefail


# function to indent script output
indent() { sed -ue 's/^/  /'; }


# before starting, first verify we're not running in a virtual environment
[[ -z $VIRTUAL_ENV ]] ||
{
    echo 'Please deactivate your current virtual environment'
    echo 'by running "deactivate", and then restart this installation script.'
    exit -1
} >&2


# also verify we're not running as 'sudo'
[[ -z $SUDO_USER ]] ||
{
    echo 'Do not run this script using "sudo"!'
    exit -1
} >&2


# start out in the packages directory
cd "$(dirname $0)/packages"


# parse command line options
INSTALL_SRC=false
case "$1" in
    -s|--src) INSTALL_SRC=true; shift;;
esac


# packages present in this installer
shopt -s nullglob
GLOBIGNORE="*-src*"
IZOT_SDK=(izot-sdk-*.tar.gz)
IZOT_RTR=(izot-rtr-*.tar.gz)
IZOT_BNR=(izot-bnr-*.tar.gz)
unset GLOBIGNORE
IZOT_SDK_SRC=(izot-sdk-*-src-*.tar.gz)
IZOT_RTR_SRC=(izot-rtr-*-src.tar.gz)


# additional SDK installation arguments
IZOT_SDK_ARGS=""


# IzoT Router and (optionally) BACnet Router
RTR_TMP_DIR="izot-rtr-$$"
[[ -f $IZOT_BNR ]] && {
    echo "Unpacking BACnet Router..."
    {
        # create temporary folder and unpack BACnet Router package
        mkdir -p "$RTR_TMP_DIR"
        tar --extract --directory "$RTR_TMP_DIR" --file "$IZOT_BNR" --verbose --preserve-permissions
    } |& indent
    echo
}

[[ -f $IZOT_RTR ]] && {
    echo "Unpacking IzoT Router..."
    {
        # create temporary folder and unpack IzoT Router package
        # overlayed on top of BACnet Router, if present
        mkdir -p "$RTR_TMP_DIR"
        tar --extract --directory "$RTR_TMP_DIR" --file "$IZOT_RTR" --verbose --preserve-permissions
    } |& indent
    echo

    # extract IzoT Router version number
    IZOT_RTR_VER=$(< "$RTR_TMP_DIR/usr/lib/izot/router_version")

    # check whether this kernel is supported as an IzoT Router
    if [[ -d "$RTR_TMP_DIR/lib/modules/$(uname -r)" ]]; then
        # install the IzoT Router package(s)
        echo "Installing IzoT Router $IZOT_RTR_VER packages..."
        (
            cd "$RTR_TMP_DIR"
            sudo ./install
        ) |& indent

        # IzoT Router upgrades system packages, so no need for SDK to do the same
        IZOT_SDK_ARGS="--skip-upgrades"
    else
    (
        echo "Skipping installation of IzoT Router $IZOT_RTR_VER."
        echo "Kernel version '$(uname -r)'' is not supported."
        echo "Kernel version(s) supported:"
        cd "$RTR_TMP_DIR/lib/modules" && echo */ | tr -d / |& indent
    ) >&2
    fi
    echo
}

# remove temporary folder, if any
rm -rf "$RTR_TMP_DIR"


# IzoT SDK
: ${IZOT:=~/izot-sdk}
echo "IZOT = $IZOT"
[[ -f $IZOT_SDK ]] && (
    echo "Unpacking IzoT SDK..."
    {
        # create IzoT SDK directory (or use currently installed installation directory)
        mkdir -p "$IZOT"
        tar --extract --directory "$IZOT" --file "$IZOT_SDK" --verbose
        cp -vf ../{README,CHANGES,LICENSE}.md "$IZOT"
    } |& indent
    echo

    cd "$IZOT"

    # extract IzoT SDK version number
    Q="['\"]"
    NQ="[^'\"]"
    IZOT_SDK_VER=$(sed -ne "s/^[^#]*VERSION.*=$NQ*$Q\($NQ*\)$Q.*/\1/p" "izot/version.py")

    # install/upgrade (bootstrap) the IzoT SDK packages
    echo "Installing IzoT SDK $IZOT_SDK_VER packages..."
    etc/bootstrap $IZOT_SDK_ARGS |& indent
    echo
)


# optionally extract source archives
$INSTALL_SRC && {
    # IzoT Router Source
    [[ -f $IZOT_RTR_SRC ]] && {
        echo "Copying IzoT Router source archive to '$HOME/$(basename IZOT_RTR_SRC)'..."
        {
            cp -f "$IZOT_RTR_SRC" ~
        } |& indent
        echo
    }


    # IzoT SDK Source
    [[ -f $IZOT_SDK_SRC ]] && {
        echo "Copying IzoT SDK source archive to '$IZOT/src/$(basename IZOT_SDK_SRC)'..."
        {
            mkdir -p "$IZOT/src"
            cp -f "$IZOT_SDK_SRC" "$IZOT/src"
        } |& indent
        echo
    }
}


# That's all folks!
echo "IzoT packages successfully installed."
exit 0