#!/bin/bash
#
# lib/stx-fault
# Functions to control the configuration and operation of the **fault** service

# Dependencies:
#
# - ``functions`` file
# - ``DEST``, ``DATA_DIR``, ``STACK_USER`` must be defined

# - The stx-update plugin must be enabled

# ``stack.sh`` calls the entry points in this order:
#
# - install_fault
# - configure_fault
# - init_fault
# - start_fault
# - stop_fault
# - cleanup_fault

_XTRACE_STX_FAULT=$(set +o | grep xtrace)
set -o xtrace


# Defaults
# --------

FAULT_DIR=${GITDIR[$STX_FAULT_NAME]}
FAULT_CONF_DIR=/etc/fm
FM_RESTAPI_CONF=$FAULT_CONF_DIR/fm.conf
FM_RESTAPI_PASTE_INI=$FAULT_CONF_DIR/api-paste.ini
FM_RESTAPI_AUTH_CACHE_DIR=${FM_RESTAPI_AUTH_CACHE_DIR:-/var/cache/fault}

FM_RESTAPI_DIR=${GITDIR[$STX_FAULT_NAME]}/fm-rest-api/fm


if is_service_enabled tls-proxy; then
    FM_RESTAPI_SERVICE_PROTOCOL="https"
fi
FM_RESTAPI_SERVICE_PROTOCOL=${FM_RESTAPI_SERVICE_PROTOCOL:-$SERVICE_PROTOCOL}
FM_RESTAPI_SERVICE_HOST=${FM_RESTAPI_SERVICE_HOST:-$SERVICE_HOST}
FM_RESTAPI_SERVICE_PORT=${FM_RESTAPI_SERVICE_PORT:-18002}
FM_RESTAPI_WORKERS=${FM_RESTAPI_WORKERS:-4}

STX_BIN_DIR=$(get_python_exec_prefix)
PYTHON_SITE_DIR=$(python -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")

# Functions
# ---------

function cleanup_fault {
    stop_fault

    if is_service_enabled fm-mgr; then
        cleanup_fm_mgr
    fi
    if is_service_enabled fm-common; then
        cleanup_fm_common
    fi
    if is_service_enabled fm-rest-api; then
        cleanup_fm_rest_api
    fi
}

function cleanup_fm_common {
    local x version

    # get fm-common version
    read x version <<< $(grep '^Version: ' ${GITDIR[$STX_FAULT_NAME]}/fm-common/PKG-INFO)
    local major=${version%%.*}
    local minor=${version##*.}
    local prefix=${STX_BIN_DIR%/*}

    sudo rm /etc/ld.so.conf.d/stx-fault.conf

    pushd ${GITDIR[$STX_FAULT_NAME]}/fm-common/sources

    sudo make \
        DEST_DIR=$prefix \
        BIN_DIR=/bin \
        LIB_DIR=/lib \
        INC_DIR=/include \
        MAJOR=$major \
        MINOR=$minor \
        clean

    sudo rm $prefix/bin/fm_db_sync_event_suppression.py \
        $prefix/include/fmConfig.h \
        $prefix/include/fmLog.h

    popd
}

function cleanup_fm_mgr {
    local x version

    # get fm-mgr version
    read x version <<< $(grep '^Version: ' ${GITDIR[$STX_FAULT_NAME]}/fm-mgr/PKG-INFO)
    local major=${version%%.*}
    local minor=${version##*.}

    pushd ${GITDIR[$STX_FAULT_NAME]}/fm-mgr/sources

    sudo make \
        BIN_DIR=/bin \
        LIB_DIR=/lib \
        INC_DIR=/include \
        MAJOR=$major \
        MINOR=$minor \
        clean

    popd
}

function cleanup_fm_rest_api {
    sudo rm -rf $FM_RESTAPI_AUTH_CACHE_DIR $FM_RESTAPI_CONF
}

function configure_fault {
    if is_service_enabled fm-rest-api; then
        configure_fm_rest_api
    fi
}

function configure_fm_rest_api {
    sudo install -d -o $STACK_USER -m 755 $FAULT_CONF_DIR

    cp -p $FAULT_DIR/devstack/files/api-paste.ini $FM_RESTAPI_PASTE_INI

    configure_auth_token_middleware $FM_RESTAPI_CONF fm $FM_RESTAPI_AUTH_CACHE_DIR

    iniset $FM_RESTAPI_CONF database connection $(database_connection_url fm)
    iniset $FM_RESTAPI_CONF api api_paste_config $FM_RESTAPI_PASTE_INI
    iniset $FM_RESTAPI_CONF api api_workers $FM_RESTAPI_WORKERS
    iniset $FM_RESTAPI_CONF api bind_host $FM_RESTAPI_SERVICE_HOST
    iniset $FM_RESTAPI_CONF api bind_port $FM_RESTAPI_SERVICE_PORT

    iniset $FM_RESTAPI_CONF oslo_middleware enable_proxy_headers_parsing True

    if [ "$SYSLOG" != "False" ]; then
        iniset $FM_RESTAPI_CONF DEFAULT use_syslog True
        # stx specific?
        iniset $FM_RESTAPI_CONF DEFAULT syslog_log_facility local2
    fi

    # Additional things set in stx config
    iniset $FM_RESTAPI_CONF DEFAULT region_name RegionOne
    iniset $FM_RESTAPI_CONF DEFAULT event_log_max_size 4000
    iniset $FM_RESTAPI_CONF DEFAULT system_name $(hostname)
    iniset $FM_RESTAPI_CONF database idle_timeout 60
    iniset $FM_RESTAPI_CONF database max_pool_size 1
    iniset $FM_RESTAPI_CONF database max_overflow 20
    iniset $FM_RESTAPI_CONF keystone_authtoken region_name RegionOne

    # sysinv settings to move there...
    iniset $FM_RESTAPI_CONF sysinv catalog_info platform:sysinv:internalURL
    iniset $FM_RESTAPI_CONF sysinv os_region_name RegionOne
}

function create_fault_accounts {
    if [[ "$ENABLED_SERVICES" =~ "fm-rest-api" ]]; then
        create_service_user "fm"
        get_or_create_service "fm" "faultmanagement" "Fault Management Service"
        get_or_create_endpoint \
            "faultmanagement" \
            "$REGION_NAME" \
            "$FM_RESTAPI_SERVICE_PROTOCOL://$FM_RESTAPI_SERVICE_HOST:$FM_RESTAPI_SERVICE_PORT/v1"
    fi
}

function create_fault_cache_dir {
    # Create cache dir
    sudo install -d -o $STACK_USER $FM_RESTAPI_AUTH_CACHE_DIR
    rm -f $FM_RESTAPI_AUTH_CACHE_DIR/*
}

function create_fault_user_group {
    :
}

function init_fault {
    create_fault_cache_dir
}

function install_fault {
    if is_service_enabled fm-common; then
        install_fm_common
        install_fm_client
    fi
    if is_service_enabled fm-api; then
        install_fm_api
    fi
    if is_service_enabled fm-api; then
        install_fm_api
    fi
    if is_service_enabled fm-mgr; then
        install_fm_mgr
    fi
    if is_service_enabled fm-rest-api; then
        install_fm_rest_api
    fi
}

function install_fm_api {
    pushd ${GITDIR[$STX_FAULT_NAME]}/fm-api
    sudo python setup.py install \
        --root=/ \
        --install-lib=$PYTHON_SITE_DIR \
        --prefix=/usr \
        --install-data=/usr/share \
        --single-version-externally-managed
    popd
}

function install_fm_client {
    pushd ${GITDIR[$STX_FAULT_NAME]}/python-fmclient/fmclient
    sudo python setup.py install \
        --root=/ \
        --install-lib=$PYTHON_SITE_DIR \
        --prefix=/usr \
        --install-data=/usr/share \
        --single-version-externally-managed
    popd
}

function install_fm_common {
    local x version

    # get fm-common version
    read x version <<< $(grep '^Version: ' ${GITDIR[$STX_FAULT_NAME]}/fm-common/PKG-INFO)
    local major=${version%%.*}
    local minor=${version##*.}

    # Set up the destinations
    # Making an assumption here about STX_BIN_DIR having ../include be valid
    local prefix=${STX_BIN_DIR%/*}

    # build
    pushd ${GITDIR[$STX_FAULT_NAME]}/fm-common/sources
    make MAJOR=$major MINOR=$minor
    sudo python setup.py build

    # install
    sudo make \
        DEST_DIR=$prefix \
        BIN_DIR=/bin \
        LIB_DIR=/lib \
        INC_DIR=/include \
        MAJOR=$major \
        MINOR=$minor \
        install

    sudo python setup.py install \
        --root=/ \
        --install-lib=$PYTHON_SITE_DIR \
        --prefix=/usr \
        --install-data=/usr/share \

    # This _is_ nasty, clean it up
    sudo install -m 755 fm_db_sync_event_suppression.py \
        $prefix/bin/fm_db_sync_event_suppression.py

    # install the headers that used by fm-mgr package
    sudo install -m 644 -p -D fmConfig.h $prefix/include/fmConfig.h
    sudo install -m 644 -p -D fmLog.h $prefix/include/fmLog.h

    # Make sure we can find it later
    # TODO: this should be managed better
    echo /usr/local/lib64 | sudo tee /etc/ld.so.conf.d/stx-fault.conf
    sudo ldconfig
    popd
}

function install_fm_mgr {
    local x version

    # get fm-mgr version
    read x version <<< $(grep '^Version: ' ${GITDIR[$STX_FAULT_NAME]}/fm-mgr/PKG-INFO)
    local major=${version%%.*}
    local minor=${version##*.}

    # build
    pushd ${GITDIR[$STX_FAULT_NAME]}/fm-mgr/sources
    make MAJOR=$major MINOR=$minor

    # install
    sudo make \
        BIN_DIR=/bin \
        LIB_DIR=/lib \
        INC_DIR=/include \
        MAJOR=$major \
        MINOR=$minor \
        install

    popd
}

function install_fm_rest_api {
    setup_develop $FM_RESTAPI_DIR
}

function start_fault {
    if is_service_enabled fm-api; then
        run_process fm-api "$STX_BIN_DIR/fm-api --config-file $FM_RESTAPI_CONF"
    fi
}

function stop_fault {
    if is_service_enabled fm-api; then
        stop_process fm_api
    fi
}

$_XTRACE_STX_FAULT