[lib.sh] Split into multiple files for readability

lib.sh got pretty big over time, making it hard to maintain.
Since most of the functions defined now in lib.sh are only required
during build/deploy and not in state files, move them to a new file.

While at it, prepare for running build/deploy as non-root and
set a default connection string for virsh instead of using
user specific config in ~/.config/libvirt/libvirt.conf, which
caused end user experience issues in the past.

Change-Id: Id8c2a8139e4bfdb99af2b0fad73b911ffa18ebea
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

1 files changed, 181 insertions, 0 deletions

diff --git a/mcp/scripts/lib_jump_common.sh b/mcp/scripts/lib_jump_common.sh
new file mode 100644
index 000000000..02ada44e9
--- /dev/null
+++ b/mcp/scripts/lib_jump_common.sh
@@ -0,0 +1,181 @@
+#!/bin/bash -e
+##############################################################################
+# Copyright (c) 2018 Mirantis Inc., Enea AB and others.
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+#
+# Library of shell functions used by build / deploy scripts on jumpserver:
+# - distro package requirements installation (e.g. DEB, RPM);
+# - other package requirements from custom sources (e.g. docker);
+# - jumpserver prerequisites validation (e.g. network bridges);
+# - distro configuration (e.g. udev, sysctl);
+# etc.
+
+##############################################################################
+# private helper functions
+##############################################################################
+
+function __parse_yaml {
+  local prefix=$2
+  local s
+  local w
+  local fs
+  s='[[:space:]]*'
+  w='[a-zA-Z0-9_]*'
+  fs="$(echo @|tr @ '\034')"
+  sed -e 's|---||g' -ne "s|^\($s\)\($w\)$s:$s\"\(.*\)\"$s\$|\1$fs\2$fs\3|p" \
+      -e "s|^\($s\)\($w\)$s[:-]$s\(.*\)$s\$|\1$fs\2$fs\3|p" "$1" |
+  awk -F"$fs" '{
+  indent = length($1)/2;
+  vname[indent] = $2;
+  for (i in vname) {if (i > indent) {delete vname[i]}}
+      if (length($3) > 0) {
+          vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
+          printf("%s%s%s=(\"%s\")\n", "'"$prefix"'",vn, $2, $3);
+      }
+  }' | sed 's/_=/+=/g'
+}
+
+##############################################################################
+# public functions
+##############################################################################
+
+function jumpserver_pkg_install {
+  local req_type=$1
+  if [ -n "$(command -v apt-get)" ]; then
+    pkg_type='deb'; pkg_cmd='sudo apt-get install -y'
+  else
+    pkg_type='rpm'; pkg_cmd='sudo yum install -y --skip-broken'
+  fi
+  eval "$(__parse_yaml "./requirements_${pkg_type}.yaml")"
+  for section in 'common' "$(uname -i)"; do
+    section_var="${req_type}_${section}[*]"
+    pkg_list+=" ${!section_var}"
+  done
+  # shellcheck disable=SC2086
+  ${pkg_cmd} ${pkg_list}
+}
+
+function jumpserver_check_requirements {
+  # shellcheck disable=SC2178
+  local vnodes=$1; shift
+  local br=("$@")
+  local err_br_not_found='Linux bridge not found!'
+  local err_br_virsh_net='is a virtual network, Linux bridge expected!'
+  local warn_br_endpoint="Endpoints might be inaccessible from external hosts!"
+  # MaaS requires a Linux bridge for PXE/admin
+  if [[ "${vnodes}" =~ mas01 ]]; then
+    if ! brctl showmacs "${br[0]}" >/dev/null 2>&1; then
+      notify_e "[ERROR] PXE/admin (${br[0]}) ${err_br_not_found}"
+    fi
+    # Assume virsh network name matches bridge name (true if created by us)
+    if ${VIRSH} net-info "${br[0]}" >/dev/null 2>&1; then
+      notify_e "[ERROR] ${br[0]} ${err_br_virsh_net}"
+    fi
+  fi
+  # If virtual nodes are present, public should be a Linux bridge
+  if [ "$(echo "${vnodes}" | wc -w)" -gt 2 ]; then
+    if ! brctl showmacs "${br[3]}" >/dev/null 2>&1; then
+      if [[ "${vnodes}" =~ mas01 ]]; then
+        # Baremetal nodes *require* a proper public network
+        notify_e "[ERROR] Public (${br[3]}) ${err_br_not_found}"
+      else
+        notify_n "[WARN] Public (${br[3]}) ${err_br_not_found}" 3
+        notify_n "[WARN] ${warn_br_endpoint}" 3
+      fi
+    fi
+    if ${VIRSH} net-info "${br[3]}" >/dev/null 2>&1; then
+      if [[ "${vnodes}" =~ mas01 ]]; then
+        notify_e "[ERROR] ${br[3]} ${err_br_virsh_net}"
+      else
+        notify_n "[WARN] ${br[3]} ${err_br_virsh_net}" 3
+        notify_n "[WARN] ${warn_br_endpoint}" 3
+      fi
+    fi
+  fi
+}
+
+function docker_install {
+  local image_dir=$1
+  # Mininum effort attempt at installing Docker if missing
+  if ! docker --version; then
+    curl -fsSL https://get.docker.com -o get-docker.sh
+    sudo sh get-docker.sh
+    rm get-docker.sh
+    # On RHEL distros, the Docker service should be explicitly started
+    sudo systemctl start docker
+  else
+    DOCKER_VER=$(docker version --format '{{.Server.Version}}')
+    if [ "${DOCKER_VER%%.*}" -lt 2 ]; then
+      notify_e "[ERROR] Docker version ${DOCKER_VER} is too old, please upgrade it."
+    fi
+  fi
+  # Distro-provided docker-compose might be simply broken (Ubuntu 16.04, CentOS 7)
+  if ! docker-compose --version > /dev/null 2>&1; then
+    COMPOSE_BIN="${image_dir}/docker-compose"
+    COMPOSE_VERSION='1.22.0'
+    notify_n "[WARN] Using docker-compose ${COMPOSE_VERSION} in ${COMPOSE_BIN}" 3
+    if [ ! -e "${COMPOSE_BIN}" ]; then
+      COMPOSE_URL="https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}"
+      sudo curl -L "${COMPOSE_URL}/docker-compose-$(uname -s)-$(uname -m)" -o "${COMPOSE_BIN}"
+      sudo chmod +x "${COMPOSE_BIN}"
+    fi
+  fi
+}
+
+function virtinst_install {
+  local image_dir=$1
+  VIRT_VER=$(virt-install --version 2>&1)
+  if [ "${VIRT_VER//./}" -lt 140 ]; then
+    VIRT_TGZ="${image_dir}/virt-manager.tar.gz"
+    VIRT_VER='1.4.3'
+    VIRT_URL="https://github.com/virt-manager/virt-manager/archive/v${VIRT_VER}.tar.gz"
+    notify_n "[WARN] Using virt-install ${VIRT_VER} from ${VIRT_TGZ}" 3
+    if [ ! -e "${VIRT_TGZ}" ]; then
+      curl -L "${VIRT_URL}" -o "${VIRT_TGZ}"
+      mkdir -p "${image_dir}/virt-manager"
+      tar xzf "${VIRT_TGZ}" -C "${image_dir}/virt-manager" --strip-components=1
+    fi
+  fi
+}
+
+function do_udev_cfg {
+  local _conf='/etc/udev/rules.d/99-opnfv-fuel-vnet-mtu.rules'
+  # http://linuxaleph.blogspot.com/2013/01/how-to-network-jumbo-frames-to-kvm-guest.html
+  echo 'SUBSYSTEM=="net", ACTION=="add|change", KERNEL=="vnet*", RUN+="/bin/sh -c '"'/bin/sleep 1; /sbin/ip link set %k mtu 9000'\"" |& sudo tee "${_conf}"
+  echo 'SUBSYSTEM=="net", ACTION=="add|change", KERNEL=="*-nic", RUN+="/bin/sh -c '"'/bin/sleep 1; /sbin/ip link set %k mtu 9000'\"" |& sudo tee -a "${_conf}"
+  sudo udevadm control --reload
+  sudo udevadm trigger
+}
+
+function do_sysctl_cfg {
+  local _conf='/etc/sysctl.d/99-opnfv-fuel-bridge.conf'
+  # https://wiki.libvirt.org/page/Net.bridge.bridge-nf-call_and_sysctl.conf
+  if modprobe br_netfilter bridge; then
+    echo 'net.bridge.bridge-nf-call-arptables = 0' |& sudo tee "${_conf}"
+    echo 'net.bridge.bridge-nf-call-iptables = 0'  |& sudo tee -a "${_conf}"
+    echo 'net.bridge.bridge-nf-call-ip6tables = 0' |& sudo tee -a "${_conf}"
+    # Some distros / sysadmins explicitly blacklist br_netfilter
+    sudo sysctl -q -p "${_conf}" || true
+  fi
+}
+
+function generate_ssh_key {
+  # shellcheck disable=SC2155
+  local mcp_ssh_key=$(basename "${SSH_KEY}")
+  local user=${USER}
+  if [ -n "${SUDO_USER}" ] && [ "${SUDO_USER}" != 'root' ]; then
+    user=${SUDO_USER}
+  fi
+
+  if [ -f "${SSH_KEY}" ]; then
+    cp "${SSH_KEY}" .
+    ssh-keygen -f "${mcp_ssh_key}" -y > "${mcp_ssh_key}.pub"
+  fi
+
+  [ -f "${mcp_ssh_key}" ] || ssh-keygen -f "${mcp_ssh_key}" -N ''
+  sudo install -D -o "${user}" -m 0600 "${mcp_ssh_key}" "${SSH_KEY}"
+}