Add function for creating basedisk

The function introduced with this changeset creates a base disk that
can be used to create custom node VMs.

Partial-Bug: 1312764
Implements: blueprint openstack-training-labs
Change-Id: Ib736b65ec0f87decd81866a60ed82d6f8b5aa0f1

labs/lib/osbash/virtualbox.install_base

@@ -0,0 +1,117 @@
+# This bash library contains the main function that creates the base disk.
+
+function vm_install_base {
+    local BASE_DISK=$1
+    local BASE_BUILD_DISK=$DISK_DIR/tmp-disk.vdi
+
+    # Port used for ssh forwarding when building base disk
+    : ${VM_BASE_SSH_PORT:=2229}
+
+    echo >&2 "$(date) osbash vm_install starts."
+
+    ${WBATCH:-:} wbatch_begin_base
+
+    # Don't remove BASE_BUILD_DISK if we are just faking it for wbatch
+    ${OSBASH:-:} rm -f "$BASE_BUILD_DISK"
+    ${WBATCH:-:} wbatch_delete_disk "$BASE_BUILD_DISK"
+
+    vm_create "$VM_BASE_NAME"
+    vm_mem "$VM_BASE_NAME" "${VM_BASE_MEM:=512}"
+
+    if [ -z "${INSTALL_ISO-}" ]; then
+        local ISO_NAME="$(get_iso_name)"
+
+        if [  -z "$ISO_NAME" ]; then
+            echo >&2 "Either ISO URL or name needed (ISO_URL, INSTALL_ISO)."
+            exit 1
+        fi
+        INSTALL_ISO=$ISO_DIR/$ISO_NAME
+        find_install-iso "$ISO_NAME"
+    fi
+
+    echo >&2 -e "Install ISO:\n\t$INSTALL_ISO"
+    $VBM storageattach "$VM_BASE_NAME" \
+        --storagectl IDE \
+        --port 0 \
+        --device 0 \
+        --type dvddrive \
+        --medium "$INSTALL_ISO"
+
+    vm_attach_guestadd-iso "$VM_BASE_NAME"
+
+    ${OSBASH:-:} mkdir -pv "$DISK_DIR"
+    create_vdi "$BASE_BUILD_DISK" 8000
+    vm_attach_disk "$VM_BASE_NAME" "$BASE_BUILD_DISK"
+
+    #---------------------------------------------------------------------------
+    # Set up communication with base VM: ssh port forwarding by default,
+    # VirtualBox shared folders for wbatch
+
+    # wbatch runs cannot use ssh, so skip port forwarding in that case
+    ${WBATCH:+:} vm_port "$VM_BASE_NAME" ssh "$VM_BASE_SSH_PORT" 22
+
+    # Automounted on /media/sf_bootstrap for first boot
+    ${WBATCH:-:} vm_add_share_automount "$VM_BASE_NAME" "$SHARE_DIR" bootstrap
+    # Mounted on /$SHARE_NAME after first boot
+    ${WBATCH:-:} vm_add_share "$VM_BASE_NAME" "$SHARE_DIR" "$SHARE_NAME"
+    #---------------------------------------------------------------------------
+
+    $VBM modifyvm "$VM_BASE_NAME" --boot1 dvd
+
+    # Configure autostart
+    autostart_reset
+
+    # For wbatch, install osbashauto as a boot service
+    ${WBATCH:-:} autostart osbash activate_autostart.sh
+
+    autostart osbash base_fixups.sh
+
+    # By default, set by lib/osbash/lib.* to something like scripts.ubuntu
+    autostart_from_config "$BASE_INSTALL_SCRIPTS"
+
+    autostart scripts zero_empty.sh shutdown.sh
+
+    # Boot VM into distribution installer
+    vbox_boot "$VM_BASE_NAME"
+
+    local DELAY=5
+    echo >&2 "Waiting $DELAY seconds for VM \"$VM_BASE_NAME\" to come up"
+    vbox_sleep "$DELAY"
+
+    vbox_distro_start_installer "$VM_BASE_NAME"
+
+    echo >&2 "Installing operating system; waiting for reboot"
+
+    # Wait for ssh connection and execute scripts in autostart directory
+    # (for wbatch, osbashauto does the processing instead)
+    ${WBATCH:+:} ssh_process_autostart "$VM_BASE_SSH_PORT" &
+    # After reboot
+    wait_for_autofiles
+    echo >&2 "Installation done for VM $VM_BASE_NAME"
+
+    vm_wait_for_shutdown "$VM_BASE_NAME"
+
+    # Detach disk from VM now or it will be deleted by vm_unregister_del
+    vm_detach_disk "$VM_BASE_NAME"
+
+    vm_unregister_del "$VM_BASE_NAME"
+
+    echo >&2 "Compacting $BASE_BUILD_DISK"
+    $VBM modifyhd "$BASE_BUILD_DISK" --compact
+
+    # This disk will be moved to a new name, and this name will be used for
+    # a new disk next time the script runs.
+    disk_unregister "$BASE_BUILD_DISK"
+
+    echo >&2 "Base disk created"
+
+    echo >&2 "Moving base disk to $BASE_DISK"
+    ${OSBASH:-:} mv -vf "$BASE_BUILD_DISK" "$BASE_DISK"
+    ${WBATCH:-:} wbatch_rename_disk "$BASE_BUILD_DISK" "$BASE_DISK"
+
+    ${WBATCH:-:} wbatch_end_file
+
+    echo >&2 -e "$(date) osbash vm_install ends\n"
+}
+
+# vim: set ai ts=4 sw=4 et ft=sh: