mirror of
https://github.com/retspen/webvirtcloud
synced 2026-11-08 19:26:48 +00:00
f77439f398
A New volume form the pool page refused, for a name with a space or a character not allowed, redirected back with the reasons at the top of the page and lost what was typed. The form now posts to the pool page itself: a valid one makes the volume and redirects as before, a refused one renders the page with the dialog open on what was entered, the refused field marked with its reason and focused. A pool stopped meanwhile has no dialog: its page shows the reasons. The separate create_volume view and URL go.
267 lines
12 KiB
Python
267 lines
12 KiB
Python
import contextlib
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import logging
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from admin.decorators import superuser_only
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from appsettings.settings import app_settings
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from computes.models import Compute
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from computes.utils import libvirt_compute_lock
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from django.contrib import messages
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from django.http import HttpResponseRedirect, JsonResponse
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from django.shortcuts import get_object_or_404, redirect, render
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from django.urls import reverse
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from django.utils.translation import gettext_lazy as _
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from libvirt import libvirtError
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from operations import claims, jobs
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from operations.utils import busy_message
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from logs.audit import audit, failed
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from vrtManager.util import OperationError
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from vrtManager.storage import wvmStorage, wvmStorages
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from storages.forms import AddStgPool, CloneImage, CreateVolumeForm
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from storages.jobs import is_iso
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from storages.upload import write_chunk
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def _handle_iso_upload(request, conn, compute, pool):
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file_chunk = request.FILES.get("file")
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if not file_chunk:
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return JsonResponse({"error": _("No file chunk was submitted.")}, status=400)
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try:
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chunk_index = int(request.POST.get("chunk_index", 0))
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total_chunks = int(request.POST.get("total_chunks", 1))
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except (ValueError, TypeError):
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return JsonResponse({"error": _("Invalid chunk parameters.")}, status=400)
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if chunk_index < 0 or chunk_index >= total_chunks:
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return JsonResponse({"error": _("Invalid chunk index or total chunks.")}, status=400)
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try:
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file_size = int(request.POST.get("file_size", ""))
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except (ValueError, TypeError):
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return JsonResponse({"error": _("Invalid file size.")}, status=400)
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try:
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op = write_chunk(request, conn, compute, pool, request.POST.get("upload_id", ""),
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{"name": request.POST.get("file_name", ""), "size": file_size, "chunks": total_chunks},
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chunk_index, file_chunk)
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except claims.Busy as busy:
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if busy.blocker is not None: # another job holds the pool or the name
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return JsonResponse({"error": busy_message(busy, request.user)}, status=400)
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return JsonResponse({"error": _("Upload session is busy. Please retry.")}, status=429)
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except FileExistsError:
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return JsonResponse({"error": _("ISO image already exists")}, status=400)
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except (ValueError, jobs.SubmissionConflict, OperationError) as e:
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return JsonResponse({"error": str(e)}, status=400)
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except Exception as e:
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logging.getLogger(__name__).exception("ISO upload chunk failed")
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return JsonResponse({"error": str(e)}, status=500)
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return JsonResponse({"success": True, "job": str(op.pk)})
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@superuser_only
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def storages(request, compute_id):
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"""
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:param request:
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:param compute_id:
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:return:
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"""
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compute = get_object_or_404(Compute, pk=compute_id)
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form = AddStgPool()
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# the new pool dialog's type: its radio cards tell the ISO pool from another directory
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pool_kind = request.POST.get("pool_kind", "dir")
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try:
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conn = wvmStorages(
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compute.hostname, compute.login, compute.password, compute.type
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)
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storages = conn.get_storages_info()
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iso_pool = next((pool for pool in storages if pool["name"] == "iso"), None)
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# the secrets an RBD pool can use, by the name they were given
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ceph_secrets = [secret for secret in conn.get_secrets_info() if secret["usage_type"] == "ceph"]
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if request.method == "POST" and "create" in request.POST:
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form = AddStgPool(request.POST, pools=storages, ceph_secrets=[s["uuid"] for s in ceph_secrets])
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if form.is_valid():
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data = form.cleaned_data
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try:
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with audit(request, compute, f"Storage pool {data['name']}", "add"):
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if data["stg_type"] == "rbd":
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conn.create_storage_ceph(data["stg_type"], data["name"], data["ceph_pool"],
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data["ceph_host"], data["ceph_user"], data["secret"])
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elif data["stg_type"] == "netfs":
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conn.create_storage_netfs(data["stg_type"], data["name"], data["netfs_host"],
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data["source"], data["source_format"], data["target"])
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else:
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conn.create_storage(data["stg_type"], data["name"], data["source"], data["target"])
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except libvirtError as err: # shown in the dialog, which opens again
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form.add_error(None, str(err))
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else:
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return HttpResponseRedirect(reverse("storage", args=[compute_id, data["name"]]))
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elif form.has_error("name", "taken"):
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failed(request, compute, f"Storage pool {form.data['name'].strip()}", "add", "name already in use")
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conn.close()
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except libvirtError as lib_err:
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messages.error(request, lib_err)
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return render(request, "storages.html", locals())
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@superuser_only
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def storage(request, compute_id, pool):
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"""
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:param request:
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:param compute_id:
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:param pool:
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:return:
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"""
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compute = get_object_or_404(Compute, pk=compute_id)
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form = CreateVolumeForm()
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conn = wvmStorage(
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compute.hostname, compute.login, compute.password, compute.type, pool
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)
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if request.method == "POST" and "iso_upload" in request.POST:
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try:
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return _handle_iso_upload(request, conn, compute, pool)
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finally:
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conn.close()
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storages = conn.get_storages()
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state = conn.is_active()
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if request.method == "POST":
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subject = f"Storage pool {pool}"
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if "start" in request.POST:
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with audit(request, compute, subject, "start"):
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conn.start()
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return HttpResponseRedirect(request.get_full_path())
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if "stop" in request.POST:
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try:
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with audit(request, compute, subject, "stop"):
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conn.stop()
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except OperationError as err: # a running VM's disk is in it
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messages.error(request, str(err))
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return HttpResponseRedirect(request.get_full_path())
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if "delete" in request.POST:
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try:
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with audit(request, compute, subject, "delete"):
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conn.delete()
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except OperationError as err: # a VM names it for a disk
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messages.error(request, str(err))
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return HttpResponseRedirect(request.get_full_path())
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return HttpResponseRedirect(reverse("storages", args=[compute_id]))
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if "set_autostart" in request.POST:
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with audit(request, compute, subject, "autostart on"):
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conn.set_autostart(1)
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return HttpResponseRedirect(request.get_full_path())
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if "unset_autostart" in request.POST:
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with audit(request, compute, subject, "autostart off"):
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conn.set_autostart(0)
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return HttpResponseRedirect(request.get_full_path())
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if "del_volume" in request.POST:
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volname = request.POST.get("volname", "")
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try:
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# no VM operation attaches it between the check and the delete
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with audit(request, compute, subject, f"delete volume {volname}"), libvirt_compute_lock(compute):
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conn.del_volume(volname)
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except OperationError as err:
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messages.error(request, str(err))
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except claims.Busy as busy:
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messages.error(request, busy_message(busy, request.user))
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else:
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messages.success(
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request, _("Volume: %(vol)s is deleted.") % {"vol": volname}
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)
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return redirect(reverse("storage", args=[compute.id, pool]))
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# return HttpResponseRedirect(request.get_full_path())
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if "create_volume" in request.POST:
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form = CreateVolumeForm(request.POST)
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if form.is_valid():
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data = form.cleaned_data
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with audit(request, compute, subject, f"add volume {data['name']}") as entry:
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name = conn.create_volume(
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data["name"],
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data["size"],
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data["format"],
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data["meta_prealloc"] and data["format"] == "qcow2",
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int(app_settings.INSTANCE_VOLUME_DEFAULT_OWNER_UID),
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int(app_settings.INSTANCE_VOLUME_DEFAULT_OWNER_GID),
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)
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entry.action = f"add volume {name}"
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messages.success(request, _("Image file %(name)s is created successfully") % {"name": name})
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return redirect(reverse("storage", args=[compute.id, pool]))
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# refused: the page shows the dialog again, with what was entered and why;
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# a pool stopped meanwhile has no dialog, so the reasons go to the page
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if not state:
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for msg_err in form.errors.values():
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messages.error(request, msg_err.as_text())
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if "cln_volume" in request.POST:
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form = CloneImage(request.POST)
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if form.is_valid():
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data = form.cleaned_data
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try:
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with audit(request, compute, f"Storage pool {pool}",
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f"clone volume {data['image']} as {data['name']}") as entry:
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op = jobs.submit("volume.clone", request.user, {"compute": compute.id, "pool": pool, **data},
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request.POST.get("submission_key", ""))
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entry.skip = True # the job writes its row when it ends
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except claims.Busy as busy:
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messages.error(request, busy_message(busy, request.user))
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except (jobs.SubmissionConflict, OperationError, libvirtError) as err:
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messages.error(request, str(err))
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else:
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jobs.remember_job(request, op)
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else:
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for msg_err in form.errors.values():
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messages.error(request, msg_err.as_text())
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return redirect(reverse("storage", args=[compute.id, pool]))
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# read only for the page: every action above redirects, but a refused new volume
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# first: it refreshes the pool, and libvirt measures a pool's space only then
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volumes = conn.update_volumes() if state else None
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for volume in volumes or []:
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volume["iso"] = is_iso(volume["name"])
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try:
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size, free = conn.get_size()
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status = conn.get_status()
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used = size - free
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if state and size: # an iSCSI pool without LUNs has no size
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percent = (used * 100) // size
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else:
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percent = 0
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except libvirtError: # both read the pool's info: the page says it could not be read
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size = free = used = percent = status = None
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path = conn.get_target_path() or conn.get_source_name() # an RBD pool: its Ceph pool
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type = conn.get_type()
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autostart = conn.get_autostart()
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job_resource = claims.pool_key(compute.id, pool)
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conn.close()
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return render(request, "storage.html", locals())
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def get_volumes(request, compute_id, pool):
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"""
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:param request:
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:param compute_id: compute id
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:param pool: pool name
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:return: volumes list of pool
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"""
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data = {}
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compute = get_object_or_404(Compute, pk=compute_id)
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try:
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conn = wvmStorage(
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compute.hostname, compute.login, compute.password, compute.type, pool
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)
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with contextlib.suppress(libvirtError): # refused while a volume is cloned in the pool
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conn.refresh()
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data["vols"] = sorted(conn.get_volumes())
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except libvirtError as err:
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# do not answer 200 with an empty list when the listing failed: the
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# caller cannot tell "no volumes" from "could not read the pool"
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return JsonResponse({"error": str(err)}, status=400)
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return JsonResponse(data)
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