mirror of
https://github.com/virt-manager/virt-manager.git
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bad894ad8c
* Have clear UI callbacks * Group functions * Privatize internal methods * Don't carry around _vol internally
368 lines
11 KiB
Python
368 lines
11 KiB
Python
# Copyright (C) 2008, 2013, 2014 Red Hat, Inc.
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# Copyright (C) 2008 Cole Robinson <crobinso@redhat.com>
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#
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# This work is licensed under the GNU GPLv2 or later.
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# See the COPYING file in the top-level directory.
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import logging
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from gi.repository import Gtk
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from gi.repository import Gdk
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from virtinst import StorageVolume
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from . import uiutil
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from .baseclass import vmmGObjectUI
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from .asyncjob import vmmAsyncJob
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class vmmCreateVolume(vmmGObjectUI):
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__gsignals__ = {
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"vol-created": (vmmGObjectUI.RUN_FIRST, None, [str, str]),
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}
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def __init__(self, conn, parent_pool):
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vmmGObjectUI.__init__(self, "createvol.ui", "vmm-create-vol")
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self.conn = conn
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self._parent_pool = parent_pool
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self._name_hint = None
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self._storage_browser = None
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self.builder.connect_signals({
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"on_vmm_create_vol_delete_event": self.close,
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"on_vol_cancel_clicked": self.close,
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"on_vol_create_clicked": self._create_clicked_cb,
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"on_vol_name_changed": self._vol_name_changed_cb,
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"on_vol_format_changed": self._vol_format_changed_cb,
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"on_backing_store_changed": self._backing_storage_changed_cb,
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"on_vol_allocation_value_changed": self._vol_allocation_changed_cb,
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"on_vol_capacity_value_changed": self._vol_capacity_changed_cb,
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"on_backing_browse_clicked": self._browse_backing_clicked_cb,
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})
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self.bind_escape_key_close()
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self._init_state()
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#######################
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# Standard UI methods #
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#######################
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def show(self, parent):
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try:
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parent_xml = self._parent_pool.xmlobj.get_xml()
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except Exception:
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logging.debug("Error getting parent_pool xml", exc_info=True)
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parent_xml = None
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logging.debug("Showing new volume wizard for parent_pool=\n%s",
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parent_xml)
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self._reset_state()
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self.topwin.set_transient_for(parent)
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self.topwin.present()
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def close(self, ignore1=None, ignore2=None):
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logging.debug("Closing new volume wizard")
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self.topwin.hide()
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if self._storage_browser:
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self._storage_browser.close()
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self.set_modal(False)
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return 1
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def _cleanup(self):
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self.conn = None
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self._parent_pool = None
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if self._storage_browser:
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self._storage_browser.cleanup()
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self._storage_browser = None
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##############
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# Public API #
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##############
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def set_name_hint(self, hint):
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self._name_hint = hint
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def set_modal(self, modal):
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self.topwin.set_modal(bool(modal))
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def set_parent_pool(self, conn, pool):
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self.conn = conn
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self._parent_pool = pool
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###########
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# UI init #
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###########
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def _init_state(self):
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blue = Gdk.color_parse("#0072A8")
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self.widget("header").modify_bg(Gtk.StateType.NORMAL, blue)
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format_list = self.widget("vol-format")
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format_model = Gtk.ListStore(str, str)
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format_list.set_model(format_model)
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uiutil.init_combo_text_column(format_list, 1)
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for fmt in ["raw", "qcow2"]:
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format_model.append([fmt, fmt])
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def _reset_state(self):
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vol = self._make_stub_vol()
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self.widget("vol-name").set_text(self._default_vol_name() or "")
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self.widget("vol-name").grab_focus()
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self.widget("vol-name").emit("changed")
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hasformat = vol.supports_property("format")
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uiutil.set_grid_row_visible(self.widget("vol-format"), hasformat)
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uiutil.set_list_selection(self.widget("vol-format"),
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self.conn.get_default_storage_format())
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default_alloc = 0
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default_cap = 20
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self.widget("backing-store").set_text("")
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alloc = default_alloc
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if not self._can_alloc():
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alloc = default_cap
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self._show_alloc()
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self._show_backing()
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self.widget("backing-expander").set_expanded(False)
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self.widget("vol-allocation").set_range(0,
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int(self._parent_pool.get_available() / 1024 / 1024 / 1024))
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self.widget("vol-allocation").set_value(alloc)
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self.widget("vol-capacity").set_range(0.1, 1000000)
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self.widget("vol-capacity").set_value(default_cap)
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self.widget("vol-parent-name").set_markup(
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"<b>" + self._parent_pool.get_name() + "'s</b>")
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self.widget("vol-parent-space").set_text(
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self._parent_pool.get_pretty_available())
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###################
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# Helper routines #
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###################
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def _get_config_format(self):
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if not self.widget("vol-format").get_visible():
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return None
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return uiutil.get_list_selection(self.widget("vol-format"))
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def _default_vol_name(self):
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if not self._name_hint:
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return ""
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suffix = self._default_suffix()
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ret = ""
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try:
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ret = StorageVolume.find_free_name(
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self._parent_pool.get_backend(),
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self._name_hint, suffix=suffix)
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except Exception:
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logging.exception("Error finding a default vol name")
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return ret
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def _default_suffix(self):
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vol = self._make_stub_vol()
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if vol.file_type != vol.TYPE_FILE:
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return ""
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return StorageVolume.get_file_extension_for_format(
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self._get_config_format())
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def _can_only_sparse(self):
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if self._get_config_format() == "qcow2":
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return True
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if (self.widget("backing-store").is_visible() and
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self.widget("backing-store").get_text()):
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return True
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return False
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def _can_alloc(self):
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if self._can_only_sparse():
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return False
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if self._parent_pool.get_type() == "logical":
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# Sparse LVM volumes don't auto grow, so alloc=0 is useless
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return False
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return True
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def _show_alloc(self):
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uiutil.set_grid_row_visible(
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self.widget("vol-allocation"), self._can_alloc())
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def _can_backing(self):
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if self._parent_pool.get_type() == "logical":
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return True
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if self._get_config_format() == "qcow2":
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return True
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return False
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def _show_backing(self):
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uiutil.set_grid_row_visible(
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self.widget("backing-expander"), self._can_backing())
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def _browse_file(self):
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if (self._storage_browser and
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self._storage_browser.conn != self.conn):
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self._storage_browser.cleanup()
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self._storage_browser = None
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if self._storage_browser is None:
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def cb(src, text):
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ignore = src
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self.widget("backing-store").set_text(text)
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from .storagebrowse import vmmStorageBrowser
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self._storage_browser = vmmStorageBrowser(self.conn)
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self._storage_browser.set_finish_cb(cb)
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self._storage_browser.topwin.set_modal(self.topwin.get_modal())
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self._storage_browser.set_browse_reason(
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self.config.CONFIG_DIR_IMAGE)
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self._storage_browser.show(self.topwin)
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def _show_err(self, info, details=None):
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self.err.show_err(info, details, modal=self.topwin.get_modal())
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def _val_err(self, info, details):
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return self.err.val_err(info, details, modal=self.topwin.get_modal())
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###################
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# Object building #
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###################
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def _make_stub_vol(self):
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vol = StorageVolume(self.conn.get_backend())
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vol.pool = self._parent_pool.get_backend()
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return vol
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def _build_xmlobj(self):
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name = self.widget("vol-name").get_text()
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suffix = self.widget("vol-name-suffix").get_text()
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volname = name + suffix
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fmt = self._get_config_format()
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alloc = self.widget("vol-allocation").get_value()
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cap = self.widget("vol-capacity").get_value()
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backing = self.widget("backing-store").get_text()
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if not self.widget("vol-allocation").get_visible():
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alloc = cap
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if self._can_only_sparse():
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alloc = 0
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try:
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vol = self._make_stub_vol()
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vol.name = volname
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vol.capacity = (cap * 1024 * 1024 * 1024)
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vol.allocation = (alloc * 1024 * 1024 * 1024)
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if backing:
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vol.backing_store = backing
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if fmt:
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vol.format = fmt
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except ValueError as e:
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return self._val_err(_("Volume Parameter Error"), e)
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return vol
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##################
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# Object install #
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##################
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def _pool_refreshed_cb(self, pool, volname):
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self.emit("vol-created", pool.get_connkey(), volname)
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def _finish_cb(self, error, details, vol):
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self.reset_finish_cursor()
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if error:
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error = _("Error creating vol: %s") % error
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self._show_err(error, details=details)
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else:
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self._parent_pool.connect("refreshed",
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self._pool_refreshed_cb, vol.name)
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self.idle_add(self._parent_pool.refresh)
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self.close()
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def _finish(self):
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vol = self._build_xmlobj()
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if not vol:
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return
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try:
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vol.validate()
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except Exception as e:
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return self._show_err(_("Error validating volume: %s") % str(e))
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self.set_finish_cursor()
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progWin = vmmAsyncJob(self._async_vol_create, [vol],
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self._finish_cb, [vol],
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_("Creating storage volume..."),
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_("Creating the storage volume may take a "
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"while..."),
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self.topwin)
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progWin.run()
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def _async_vol_create(self, asyncjob, vol):
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conn = self.conn.get_backend()
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# Lookup different pool obj
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newpool = conn.storagePoolLookupByName(self._parent_pool.get_name())
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vol.pool = newpool
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meter = asyncjob.get_meter()
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logging.debug("Starting background vol creation.")
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vol.install(meter=meter)
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logging.debug("vol creation complete.")
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################
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# UI listeners #
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################
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def _vol_format_changed_cb(self, src):
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self._show_alloc()
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self._show_backing()
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self.widget("vol-name").emit("changed")
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def _vol_capacity_changed_cb(self, src):
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alloc_widget = self.widget("vol-allocation")
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cap = src.get_value()
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alloc = self.widget("vol-allocation").get_value()
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if cap < alloc:
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alloc_widget.set_value(cap)
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def _vol_allocation_changed_cb(self, src):
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cap_widget = self.widget("vol-capacity")
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alloc = src.get_value()
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cap = cap_widget.get_value()
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if alloc > cap:
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cap_widget.set_value(alloc)
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def _vol_name_changed_cb(self, src):
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text = src.get_text()
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suffix = self._default_suffix()
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if "." in text:
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suffix = ""
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self.widget("vol-name-suffix").set_text(suffix)
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self.widget("vol-create").set_sensitive(bool(text))
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def _browse_backing_clicked_cb(self, src):
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self._browse_file()
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def _backing_storage_changed_cb(self, src):
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self._show_alloc()
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def _create_clicked_cb(self, src):
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self._finish()
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