install

#!/bin/bash

FORCE_FRESH_INSTALL="yes"

START_DIR=`pwd`

NIMBUS_SRC_REL="`dirname $0`"
NIMBUS_SRC=`cd $NIMBUS_SRC_REL; pwd`

if [ "X$1" = "X" ]; then
    echo ""
    echo "Usage: $0 destination_dir"
    echo "    You must specify the destination directory."
    echo ""
    exit 1
fi

NIMBUS_REL_BASE_HOME="`dirname $1`"
NIMBUS_BASE_HOME=`cd $NIMBUS_REL_BASE_HOME; pwd`

if [ ! -e $NIMBUS_REL_BASE_HOME ]; then
    echo "The parent directory for the installation path $1 must exist"
    exit 1
fi

NIMBUS_INST_DIR=`basename $1`
NIMBUS_HOME="$NIMBUS_BASE_HOME/$NIMBUS_INST_DIR"
echo "NIMBUS_HOME $NIMBUS_HOME"

if [ "X$NIMBUS_ALLOW_ROOT_INSTALL" != "Xyes" ] && [ $EUID -eq 0 ]; then
    echo ""
    echo "It is not recommended to install or run Nimbus as root."
    echo "If you insist, set the NIMBUS_ALLOW_ROOT_INSTALL environment variable to \"yes\""
    echo ""
    exit 1
fi

if [ -d $NIMBUS_HOME ] && [ "$(ls -A $NIMBUS_HOME)" ]; then
    if [ $FORCE_FRESH_INSTALL = "yes" ]; then
        echo ""
        echo "The destination directory '$NIMBUS_HOME' exists and is not empty."
        echo "It is not recommended to reinstall Nimbus into an existing install."
        echo ""
        echo "If you are making changes to the services, you can build and install those directly:"
        echo "    export GLOBUS_LOCATION=$NIMBUS_HOME/services"
        echo "    scripts/all-build-and-install.sh"
        echo ""
        echo "If you know what you are doing and want to reinstall, edit this script:"
        echo "    $0"
        echo "and change FORCE_FRESH_INSTALL to \"no\""
        echo ""

        exit 1
    fi
fi


if [ ! -d $NIMBUS_HOME ]; then
    mkdir $NIMBUS_HOME
fi

# If the dir exists but is not writable, this will also trip that situation early/gracefully.
touch $NIMBUS_HOME/install.log
if [ $? -ne 0 ]; then
  echo "ERROR: cannot write install log file: $NIMBUS_HOME/install.log"
  exit 1
fi

# The install log contains the initial cumulus admin secrets 
chmod 600 $NIMBUS_HOME/install.log
if [ $? -ne 0 ]; then
  echo "ERROR: cannot chmod install log file: $NIMBUS_HOME/install.log"
  exit 1
fi

if [ "X$PYTHON" = "X" ]; then
    PYTHON_EXE=`which python`
else
    PYTHON_EXE="$PYTHON"
fi
# returns 0 if Python 2.5+
$PYTHON_EXE -c "import sys; sys.exit(sys.version_info < (2,5))"
if [ $? -ne 0 ]; then
    echo "ERROR: The central Nimbus node must have Python version 2.5 or later (VMM nodes can have 2.4+)."
    exit 1
fi

echo ""
echo "-----------------------------------------------------------------" | tee -a $NIMBUS_HOME/install.log
echo "Making the Python virtual environment" | tee -a $NIMBUS_HOME/install.log
echo "-----------------------------------------------------------------" | tee -a $NIMBUS_HOME/install.log
echo ""

pyve_path=$NIMBUS_HOME/ve
echo "Installing from $NIMBUS_SRC"

cp $NIMBUS_SRC/cumulus/*.egg .
$PYTHON_EXE $NIMBUS_SRC/cumulus/virtualenv.py -p $PYTHON_EXE $pyve_path | tee -a $NIMBUS_HOME/install.log
if [ $PIPESTATUS -ne 0 ]; then
    echo "ERROR: python virtualenv installation failed."
    exit 1
fi

$NIMBUS_SRC/libexec/create-nimbus-home $NIMBUS_HOME 2>&1 | tee -a $NIMBUS_HOME/install.log

# need PIPESTATUS because tee is not the exit code this needs to check
if [ $PIPESTATUS -ne 0 ]; then
    echo ""
    exit 1
fi

CUMULUS_ENV="$NIMBUS_HOME/cumulus/env.sh"
if [ ! -f $CUMULUS_ENV ]; then
    echo "Expected file to be created: $CUMULUS_ENV"
    exit 1
fi

export NIMBUS_HOME
$NIMBUS_SRC/lantorrent/install.sh $NIMBUS_HOME/lantorrent | tee -a $NIMBUS_HOME/install.log
rc=$PIPESTATUS
if [ $rc -ne 0 ]; then
    echo "lantorrent install failed"
    exit $rc
fi

echo ""
echo "-----------------------------------------------------------------"
echo " Configuring installed services"
echo "-----------------------------------------------------------------"

CONFIG_SCRIPT="$NIMBUS_HOME/bin/nimbus-configure"

if [ ! -f $CONFIG_SCRIPT ]; then
    echo "Configuration script could not be found: $CONFIG_SCRIPT"
    exit 1
fi

vmm_cmd="Programmer. Error."
EXTRA_CONFIG_SCRIPT_ARGS=""
if [ "X" != "X$PREVIOUS_NIMBUS_HOME_VALIDATED" ]; then
    echo ""
    echo "Beginning the configuration with values from the old Nimbus installation: $PREVIOUS_NIMBUS_HOME_VALIDATED"
    echo ""
    
    oldnimbusconf=$PREVIOUS_NIMBUS_HOME_VALIDATED/nimbus-setup.conf
    if [ ! -f $oldnimbusconf ]; then
        echo "The old Nimbus installation does not have a configuration file, expecting to find: $oldnimbusconf"
        exit 1
    fi
    
    cp $oldnimbusconf $NIMBUS_HOME/nimbus-setup.conf
    if [ $? -ne 0 ]; then
        echo "Could not copy the old configuration file: cp $oldnimbusconf $NIMBUS_HOME/nimbus-setup.conf"
        exit 1
    fi
    
    EXTRA_CONFIG_SCRIPT_ARGS="--conf $NIMBUS_HOME/nimbus-setup.conf"
    
    # We know that a fresh installation will have missing things specified in
    # that conf file.  Any relative path configuratoin in that previous conf
    # file will be copied over here.  Any absolute path will be noted but not
    # touched.
    
    $CONFIG_SCRIPT $EXTRA_CONFIG_SCRIPT_ARGS --import-prev
    if [ $? -ne 0 ]; then
        echo ""
        echo "Could not import something specified in the old configuration file: $oldnimbusconf"
        exit 1
    fi
    
    old_vmmdir="$PREVIOUS_NIMBUS_HOME_VALIDATED/services/etc/nimbus/workspace-service/vmm-pools"
    vmm_cmd="$CONFIG_SCRIPT $EXTRA_CONFIG_SCRIPT_ARGS --import-vmms $old_vmmdir"
fi

$CONFIG_SCRIPT $EXTRA_CONFIG_SCRIPT_ARGS
if [ $? -ne 0 ]; then
    echo "Nimbus configuration script failed! You may try running it manually:"
    echo "    $CONFIG_SCRIPT"
    echo "You can also run the script with debugging output:"
    echo "    $CONFIG_SCRIPT --debug"
    exit 1
fi

$NIMBUS_SRC/libexec/configure-cumulus.sh  "${@}" 2>&1 | tee -a $NIMBUS_HOME/install.log
# need PIPESTATUS because tee is not the exit code of interest
rc=$PIPESTATUS
if [ $rc -ne 0 ]; then
    exit $rc
fi

if [ "X" != "X$PREVIOUS_NIMBUS_HOME_VALIDATED" ]; then
    echo ""
    $CONFIG_SCRIPT $EXTRA_CONFIG_SCRIPT_ARGS --import-cumulusdb
    if [ $? -ne 0 ]; then
        echo ""
        echo "Could not import Cumulus DB from the old configuration file: $oldnimbusconf"
        exit 1
    fi
fi

echo ""
GUIDEURL=`$NIMBUS_HOME/bin/nimbus-version --guide`
if [ $? -ne 0 ]; then
    GUIDEURL="Development mode: no guide url"
fi

echo ""
echo "-----------------------------------------------------------------"
echo " Nimbus installation succeeded!"
echo "-----------------------------------------------------------------"
echo ""
echo "Additional configuration may be necessary, refer to this URL for information:"
echo ""
echo "    $GUIDEURL"
echo ""
echo "You can start/stop Nimbus services with the nimbusctl command. e.g:"
echo ""
echo "    $NIMBUS_HOME/bin/nimbusctl start"
echo ""

if [ "X" != "X$PREVIOUS_NIMBUS_HOME_VALIDATED" ]; then
    old_etc_dir=$PREVIOUS_NIMBUS_HOME_VALIDATED/services/etc/nimbus
    new_etc_dir=$NIMBUS_HOME/services/etc/nimbus
    echo "-----------------------------------------------------------------"
    echo " ** Upgrade work still needed **"
    echo "-----------------------------------------------------------------"
    echo ""
    echo "While key settings have been transferred from your old install,"
    echo "you still need to do a manual confirmation and transfer of"
    echo "customizations."
    echo ""
    echo "Run the following command to look for customizations:"
    echo ""
    echo "    diff -u -r $old_etc_dir $new_etc_dir"
    echo ""
    echo "After using nimbusctl to start the services, use the following"
    echo "command to import VMM configurations.  This can only be done "
    echo "with a running service:"
    echo ""
    echo "    $vmm_cmd"
    echo ""
fi

exit 0