Add fake env support to baremetal

Use bm_poseur to create VM and network bridge
so that, in the absence of physical hardware,
baremetal driver still has something to manipulate.

Change-Id: Id80ede13a35e4380f358b47f08d41ff98ea9d70f

lib/baremetal

@@ -71,10 +71,24 @@ BM_POWER_MANAGER=${BM_POWER_MANAGER:-nova.virt.baremetal.fake.FakePowerManager}
 # These should be customized to your environment and hardware
 # -----------------------------------------------------------
 
-# BM_DNSMASQ_* options must be changed to suit your network environment
-BM_DNSMASQ_IFACE=${BM_DNSMASQ_IFACE:-$PUBLIC_INTERFACE}
-BM_DNSMASQ_IFACE=${BM_DNSMASQ_IFACE:-eth0}
-BM_DNSMASQ_RANGE=${BM_DNSMASQ_RANGE:-192.0.2.32,192.0.2.48}
+# whether to create a fake environment, eg. for devstack-gate
+BM_USE_FAKE_ENV=`trueorfalse False $BM_USE_FAKE_ENV`
+
+# Extra options to pass to bm_poseur
+# change the bridge name or IP: --bridge br99 --bridge-ip 192.0.2.1
+# change the virtualization type: --engine qemu
+BM_POSEUR_EXTRA_OPTS=${BM_POSEUR_EXTRA_OPTS:-}
+
+# BM_DNSMASQ_IFACE should match FLAT_NETWORK_BRIDGE
+if [ "$BM_USE_FAKE_ENV" ]; then
+    BM_DNSMASQ_IFACE=${BM_DNSMASQ_IFACE:-br99}
+    BM_DNSMASQ_RANGE=${BM_DNSMASQ_RANGE:-192.0.2.32,192.0.2.48}
+else
+    BM_DNSMASQ_IFACE=${BM_DNSMASQ_IFACE:-eth0}
+    # if testing on a physical network,
+    # BM_DNSMASQ_RANGE must be changed to suit your network
+    BM_DNSMASQ_RANGE=${BM_DNSMASQ_RANGE:-}
+fi
 
 # BM_FIRST_MAC *must* be set to the MAC address of the node you will boot.
 #              This is passed to dnsmasq along with the kernel/ramdisk to
@@ -108,8 +122,8 @@ BM_FLAVOR_ARCH=${BM_FLAVOR_ARCH:-$BM_CPU_ARCH}
 
 # Below this, we set some path and filenames.
 # Defaults are probably sufficient.
-
 BM_IMAGE_BUILD_DIR=${BM_IMAGE_BUILD_DIR:-$DEST/diskimage-builder}
+BM_POSEUR_DIR=${BM_POSEUR_DIR:-$DEST/bm_poseur}
 
 BM_HOST_CURRENT_KERNEL=$(uname -r)
 BM_DEPLOY_RAMDISK=${BM_DEPLOY_RAMDISK:-bm-deploy-$BM_HOST_CURRENT_KERNEL-initrd}
@@ -140,6 +154,7 @@ function is_baremetal() {
 # so that we can build the deployment kernel & ramdisk
 function prepare_baremetal_toolchain() {
     git_clone $BM_IMAGE_BUILD_REPO $BM_IMAGE_BUILD_DIR $BM_IMAGE_BUILD_BRANCH
+    git_clone $BM_POSEUR_REPO $BM_POSEUR_DIR $BM_POSEUR_BRANCH
 
     local shellinabox_basename=$(basename $BM_SHELL_IN_A_BOX)
     if [[ ! -e $DEST/$shellinabox_basename ]]; then
@@ -158,6 +173,27 @@ function prepare_baremetal_toolchain() {
     fi
 }
 
+# set up virtualized environment for devstack-gate testing
+function create_fake_baremetal_env() {
+    local bm_poseur="$BM_POSEUR_DIR/bm_poseur"
+    # TODO(deva): add support for >1 VM
+    sudo $bm_poseur $BM_POSEUR_EXTRA_OPTS create-bridge
+    sudo $bm_poseur $BM_POSEUR_EXTRA_OPTS create-vm
+    BM_FIRST_MAC=$(sudo $bm_poseur get-macs)
+
+    # NOTE: there is currently a limitation in baremetal driver
+    #       that requires second MAC even if it is not used.
+    #       Passing a fake value allows this to work.
+    # TODO(deva): remove this after driver issue is fixed.
+    BM_SECOND_MAC='12:34:56:78:90:12'
+}
+
+function cleanup_fake_baremetal_env() {
+    local bm_poseur="$BM_POSEUR_DIR/bm_poseur"
+    sudo $bm_poseur $BM_POSEUR_EXTRA_OPTS destroy-vm
+    sudo $bm_poseur $BM_POSEUR_EXTRA_OPTS destroy-bridge
+}
+
 # prepare various directories needed by baremetal hypervisor
 function configure_baremetal_nova_dirs() {
     # ensure /tftpboot is prepared

stack.sh

@@ -1145,6 +1145,9 @@ if is_service_enabled nova && is_baremetal; then
     echo_summary "Preparing for nova baremetal"
     prepare_baremetal_toolchain
     configure_baremetal_nova_dirs
+    if [[ "$BM_USE_FAKE_ENV" = "True" ]]; then
+       create_fake_baremetal_env
+    fi
 fi
 
 # Launch Services

stackrc

@@ -115,6 +115,13 @@ RYU_BRANCH=master
 BM_IMAGE_BUILD_REPO=https://github.com/stackforge/diskimage-builder.git
 BM_IMAGE_BUILD_BRANCH=master
 
+# bm_poseur
+# Used to simulate a hardware environment for baremetal
+# Only used if BM_USE_FAKE_ENV is set
+BM_POSEUR_REPO=https://github.com/tripleo/bm_poseur.git
+BM_POSEUR_BRANCH=master
+
+
 # Nova hypervisor configuration.  We default to libvirt with **kvm** but will
 # drop back to **qemu** if we are unable to load the kvm module.  ``stack.sh`` can
 # also install an **LXC** or **OpenVZ** based system.

unstack.sh

@@ -25,6 +25,7 @@ source $TOP_DIR/stackrc
 DATA_DIR=${DATA_DIR:-${DEST}/data}
 
 # Get project function libraries
+source $TOP_DIR/lib/baremetal
 source $TOP_DIR/lib/cinder
 source $TOP_DIR/lib/horizon
 source $TOP_DIR/lib/swift
@@ -67,6 +68,11 @@ if is_service_enabled tls-proxy; then
     killall stud
 fi
 
+# baremetal might have created a fake environment
+if is_service_enabled baremetal && [[ "$BM_USE_FAKE_ENV" = "True" ]]; then
+    cleanup_fake_baremetal_env
+fi
+
 SCSI_PERSIST_DIR=$CINDER_STATE_PATH/volumes/*
 
 # Get the iSCSI volumes