[PDF] Switch to generate_config, unify templates

- move bash template handling (previously expanded via `envsubst`)
  to lib.sh;
- move j2 template handling to lib.sh;
- move virsh network templates to 'mcp/scripts/virsh_net' subdir;
- switch virsh network templates from `envsubst` expansion to j2 and
  leverage generate_config.py, similar to PDF Fuel installer adapter;
- add relevant runtime env vars (e.g. SALT_MASTER, MAAS_IP) on the fly
  to PDF, to consume them in templates like params coming from PDF;
- parameterize virsh network definitions based on PDF (mgmt, public);

JIRA: FUEL-322

Change-Id: Ib94e78fc4f25797b9354a0552e884104da5d0003
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

6 files changed, 77 insertions, 8 deletions

diff --git a/mcp/scripts/globals.sh b/mcp/scripts/globals.sh
index ace1de3a1..8966a0a94 100644
--- a/mcp/scripts/globals.sh
+++ b/mcp/scripts/globals.sh
@@ -12,9 +12,13 @@ export CI_DEBUG=${CI_DEBUG:-0}; [[ "${CI_DEBUG}" =~ (false|0) ]] || set -x
 export SSH_KEY=${SSH_KEY:-"/var/lib/opnfv/mcp.rsa"}
 export SALT_MASTER=${INSTALLER_IP:-10.20.0.2}
 export SALT_MASTER_USER=${SALT_MASTER_USER:-ubuntu}
+
+# Derived from INSTALLER_IP
+export MCPCONTROL_NET=${MCPCONTROL_NET:-${SALT_MASTER%.*}.0}
+export MCPCONTROL_PREFIX=${MCPCONTROL_PREFIX:-24}
 export MAAS_IP=${MAAS_IP:-${SALT_MASTER%.*}.3}
 
-# Derivated from above global vars
+# Derived from above global vars, not overideable
 export SSH_OPTS="-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ${SSH_KEY}"
 export SSH_SALT="${SALT_MASTER_USER}@${SALT_MASTER}"
 
diff --git a/mcp/scripts/lib.sh b/mcp/scripts/lib.sh
index d91dcc3e1..7920a4e0d 100644
--- a/mcp/scripts/lib.sh
+++ b/mcp/scripts/lib.sh
@@ -321,8 +321,9 @@ function create_networks {
       virsh net-undefine "${net}"
     fi
     # in case of custom network, host should already have the bridge in place
-    if [ -f "net_${net}.xml" ] && [ ! -d "/sys/class/net/${net}/bridge" ]; then
-      virsh net-define "net_${net}.xml"
+    if [ -f "virsh_net/net_${net}.xml" ] && \
+     [ ! -d "/sys/class/net/${net}/bridge" ]; then
+      virsh net-define "virsh_net/net_${net}.xml"
       virsh net-autostart "${net}"
       virsh net-start "${net}"
     fi
@@ -469,6 +470,55 @@ function do_sysctl_cfg {
 function get_nova_compute_pillar_data {
   local value=$(salt -C 'I@nova:compute and *01*' pillar.get _param:"${1}" --out yaml | cut -d ' ' -f2)
   if [ "${value}" != "''" ]; then
-    echo  ${value}
+    echo "${value}"
   fi
 }
+
+function do_templates() {
+  local git_repo_root=$1; shift
+  local image_dir=$1; shift
+  local target_lab=$1; shift
+  local target_pod=$1; shift
+  local lab_config_uri=$1; shift
+  local scenario_dir=${1:-}
+
+  RECLASS_CLUSTER_DIR=$(cd "${git_repo_root}/mcp/reclass/classes/cluster"; pwd)
+  PHAROS_GEN_CFG="./pharos/config/utils/generate_config.py"
+  PHAROS_INSTALLER_ADAPTER="./pharos/config/installers/fuel/pod_config.yml.j2"
+  BASE_CONFIG_PDF="${lab_config_uri}/labs/${target_lab}/${target_pod}.yaml"
+  BASE_CONFIG_IDF="${lab_config_uri}/labs/${target_lab}/idf-${target_pod}.yaml"
+  LOCAL_PDF="${image_dir}/$(basename "${BASE_CONFIG_PDF}")"
+  LOCAL_IDF="${image_dir}/$(basename "${BASE_CONFIG_IDF}")"
+  LOCAL_PDF_RECLASS="${image_dir}/pod_config.yml"
+
+  # Two-stage expansion, first stage handles pod_config and scenarios only
+  if [ -n "${scenario_dir}" ]; then
+    # Make sample PDF/IDF available via default lab-config (pharos submodule)
+    ln -sf "$(readlink -f "../config/labs/local")" "./pharos/labs/"
+
+    # Expand scenario file and main reclass input (pod_config.yaml) based on PDF
+    if ! curl --create-dirs -o "${LOCAL_PDF}" "${BASE_CONFIG_PDF}"; then
+      notify_e "[ERROR] Could not retrieve PDF (Pod Descriptor File)!"
+    elif ! curl -o "${LOCAL_IDF}" "${BASE_CONFIG_IDF}"; then
+      notify_e "[ERROR] Could not retrieve IDF (Installer Descriptor File)!"
+    elif ! "${PHAROS_GEN_CFG}" -y "${LOCAL_PDF}" \
+        -j "${PHAROS_INSTALLER_ADAPTER}" > "${LOCAL_PDF_RECLASS}"; then
+      notify_e "[ERROR] Could not convert PDF+IDF to reclass model input!"
+    fi
+    template_dirs="${scenario_dir}"
+    template_err_str='Could not convert j2 scenario definitions!'
+  else
+    # Expand reclass and virsh network templates based on PDF + IDF
+    printenv | \
+      awk '/^(SALT|MCP|MAAS|CLUSTER).*=/ { gsub(/=/,": "); print }' >> "${LOCAL_PDF}"
+    template_dirs="${RECLASS_CLUSTER_DIR} virsh_net ./*j2"
+    template_err_str='Could not convert PDF to network definitions!'
+  fi
+  # shellcheck disable=SC2086
+  find ${template_dirs} -name '*.j2' | while read -r tp; do
+    # Jinja2 import does not allow '..' directory traversal
+    if ! "${PHAROS_GEN_CFG}" -y "${LOCAL_PDF}" -j "${tp}" > "${tp%.j2}"; then
+      notify_e "[ERROR] ${template_err_str}"
+    fi
+  done
+}
diff --git a/mcp/scripts/net_internal.xml b/mcp/scripts/virsh_net/net_internal.xml
index 8cf875e7c..8cf875e7c 100644
--- a/mcp/scripts/net_internal.xml
+++ b/mcp/scripts/virsh_net/net_internal.xml
diff --git a/mcp/scripts/net_mcpcontrol.xml.template b/mcp/scripts/virsh_net/net_mcpcontrol.xml.j2
index e0034fd16..95424db4e 100644
--- a/mcp/scripts/net_mcpcontrol.xml.template
+++ b/mcp/scripts/virsh_net/net_mcpcontrol.xml.j2
@@ -6,13 +6,14 @@
  which accompanies this distribution, and is available at
  http://www.apache.org/licenses/LICENSE-2.0
 -->
+{#- conf.MCPCONTROL_NET & co are mandatory, defaults are set via globals.sh #}
 <network>
   <name>mcpcontrol</name>
   <bridge name="mcpcontrol"/>
   <forward mode="nat"/>
-  <ip address="${SALT_MASTER%.*}.1" netmask="255.255.255.0">
+  <ip address="{{ conf.MCPCONTROL_NET | ipaddr_index(1) }}" netmask="{{ conf.MCPCONTROL_PREFIX | netmask }}">
     <dhcp>
-      <range start="${SALT_MASTER%.*}.2" end="${SALT_MASTER%.*}.254"/>
+      <range start="{{ conf.MCPCONTROL_NET | ipaddr_index(2) }}" end="{{ conf.MCPCONTROL_NET | ipaddr_index(254) }}"/>
     </dhcp>
   </ip>
 </network>
diff --git a/mcp/scripts/net_mgmt.xml b/mcp/scripts/virsh_net/net_mgmt.xml.j2
index 4fbec712a..a558293fa 100644
--- a/mcp/scripts/net_mgmt.xml
+++ b/mcp/scripts/virsh_net/net_mgmt.xml.j2
@@ -6,8 +6,15 @@
  which accompanies this distribution, and is available at
  http://www.apache.org/licenses/LICENSE-2.0
 -->
+{%- if conf.idf.net_config.mgmt is defined %}
+  {%- set mgmt_network = conf.idf.net_config.mgmt.network %}
+  {%- set mgmt_prefix = conf.idf.net_config.mgmt.mask %}
+{%- else %}
+  {%- set mgmt_network = '172.16.10.0' %}
+  {%- set mgmt_prefix = '24' %}
+{%- endif %}
 <network>
   <name>mgmt</name>
   <bridge name="mgmt"/>
-  <ip address="172.16.10.1" netmask="255.255.255.0"/>
+  <ip address="{{ mgmt_network | ipaddr_index(1) }}" netmask="{{ mgmt_prefix | netmask }}"/>
 </network>
diff --git a/mcp/scripts/net_public.xml b/mcp/scripts/virsh_net/net_public.xml.j2
index d6df4aa30..e47f69bb4 100644
--- a/mcp/scripts/net_public.xml
+++ b/mcp/scripts/virsh_net/net_public.xml.j2
@@ -6,9 +6,16 @@
  which accompanies this distribution, and is available at
  http://www.apache.org/licenses/LICENSE-2.0
 -->
+{%- if conf.idf.net_config.public is defined %}
+  {%- set public_network = conf.idf.net_config.public.network %}
+  {%- set public_prefix = conf.idf.net_config.public.mask %}
+{%- else %}
+  {%- set public_network = '10.16.0.0' %}
+  {%- set public_prefix = '24' %}
+{%- endif %}
 <network>
   <name>public</name>
   <bridge name="public"/>
   <forward mode="nat"/>
-  <ip address="10.16.0.1" netmask="255.255.255.0" />
+  <ip address="{{ public_network | ipaddr_index(1) }}" netmask="{{ public_prefix | netmask }}"/>
 </network>