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snapshot_context.py
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# Copyright (C) 2018-2020 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU Affero General Public License version 3, or any later version
# See top-level LICENSE file for more information
# Utility module for browsing the archive in a snapshot context.
from collections import defaultdict
from typing import Any, Dict, List, Optional, Tuple
from django.core.cache import cache
from django.shortcuts import render
from django.template.defaultfilters import filesizeformat
from django.utils.html import escape
from swh.model.identifiers import CONTENT, DIRECTORY, RELEASE, REVISION, SNAPSHOT, swhid
from swh.model.model import Snapshot
from swh.web.browse.utils import (
content_display_max_size,
format_log_entries,
gen_content_link,
gen_release_link,
gen_revision_link,
gen_revision_log_link,
gen_revision_url,
gen_snapshot_link,
get_directory_entries,
get_readme_to_display,
prepare_content_for_display,
request_content,
)
from swh.web.common import archive, highlightjs
from swh.web.common.exc import BadInputExc, NotFoundExc, http_status_code_message
from swh.web.common.identifiers import get_swhids_info
from swh.web.common.origin_visits import get_origin_visit
from swh.web.common.typing import (
ContentMetadata,
DirectoryMetadata,
OriginInfo,
SnapshotBranchInfo,
SnapshotContext,
SnapshotReleaseInfo,
SWHObjectInfo,
)
from swh.web.common.utils import (
format_utc_iso_date,
gen_path_info,
reverse,
swh_object_icons,
)
from swh.web.config import get_config
_empty_snapshot_id = Snapshot(branches={}).id.hex()
def _get_branch(branches, branch_name, snapshot_id):
"""
Utility function to get a specific branch from a branches list.
Its purpose is to get the default HEAD branch as some software origin
(e.g those with svn type) does not have it. In that latter case, check
if there is a master branch instead and returns it.
"""
filtered_branches = [b for b in branches if b["name"] == branch_name]
if filtered_branches:
return filtered_branches[0]
elif branch_name == "HEAD":
filtered_branches = [b for b in branches if b["name"].endswith("master")]
if filtered_branches:
return filtered_branches[0]
elif branches:
return branches[0]
else:
# case where a large branches list has been truncated
snp = archive.lookup_snapshot(
snapshot_id,
branches_from=branch_name,
branches_count=1,
target_types=["revision", "alias"],
)
snp_branch, _, _ = process_snapshot_branches(snp)
if snp_branch and snp_branch[0]["name"] == branch_name:
branches.append(snp_branch[0])
return snp_branch[0]
def _get_release(releases, release_name, snapshot_id):
"""
Utility function to get a specific release from a releases list.
Returns None if the release can not be found in the list.
"""
filtered_releases = [r for r in releases if r["name"] == release_name]
if filtered_releases:
return filtered_releases[0]
else:
# case where a large branches list has been truncated
try:
# git origins have specific branches for releases
snp = archive.lookup_snapshot(
snapshot_id,
branches_from=f"refs/tags/{release_name}",
branches_count=1,
target_types=["release"],
)
except NotFoundExc:
snp = archive.lookup_snapshot(
snapshot_id,
branches_from=release_name,
branches_count=1,
target_types=["release"],
)
_, snp_release, _ = process_snapshot_branches(snp)
if snp_release and snp_release[0]["name"] == release_name:
releases.append(snp_release[0])
return snp_release[0]
def _branch_not_found(
branch_type, branch, snapshot_id, snapshot_sizes, origin_info, timestamp, visit_id
):
"""
Utility function to raise an exception when a specified branch/release
can not be found.
"""
if branch_type == "branch":
branch_type = "Branch"
branch_type_plural = "branches"
target_type = "revision"
else:
branch_type = "Release"
branch_type_plural = "releases"
target_type = "release"
if snapshot_id and snapshot_sizes[target_type] == 0:
msg = "Snapshot with id %s has an empty list" " of %s!" % (
snapshot_id,
branch_type_plural,
)
elif snapshot_id:
msg = "%s %s for snapshot with id %s" " not found!" % (
branch_type,
branch,
snapshot_id,
)
elif visit_id and snapshot_sizes[target_type] == 0:
msg = (
"Origin with url %s"
" for visit with id %s has an empty list"
" of %s!" % (origin_info["url"], visit_id, branch_type_plural)
)
elif visit_id:
msg = (
"%s %s associated to visit with"
" id %s for origin with url %s"
" not found!" % (branch_type, branch, visit_id, origin_info["url"])
)
elif snapshot_sizes[target_type] == 0:
msg = (
"Origin with url %s"
" for visit with timestamp %s has an empty list"
" of %s!" % (origin_info["url"], timestamp, branch_type_plural)
)
else:
msg = (
"%s %s associated to visit with"
" timestamp %s for origin with "
"url %s not found!" % (branch_type, branch, timestamp, origin_info["url"])
)
raise NotFoundExc(escape(msg))
def process_snapshot_branches(
snapshot: Dict[str, Any]
) -> Tuple[List[SnapshotBranchInfo], List[SnapshotReleaseInfo], Dict[str, Any]]:
"""
Process a dictionary describing snapshot branches: extract those
targeting revisions and releases, put them in two different lists,
then sort those lists in lexicographical order of the branches' names.
Args:
snapshot: A dict describing a snapshot as returned for instance by
:func:`swh.web.common.archive.lookup_snapshot`
Returns:
A tuple whose first member is the sorted list of branches
targeting revisions, second member the sorted list of branches
targeting releases and third member a dict mapping resolved branch
aliases to their real target.
"""
snapshot_branches = snapshot["branches"]
branches: Dict[str, SnapshotBranchInfo] = {}
branch_aliases: Dict[str, str] = {}
releases: Dict[str, SnapshotReleaseInfo] = {}
revision_to_branch = defaultdict(set)
revision_to_release = defaultdict(set)
release_to_branch = defaultdict(set)
for branch_name, target in snapshot_branches.items():
if not target:
# FIXME: display branches with an unknown target anyway
continue
target_id = target["target"]
target_type = target["target_type"]
if target_type == "revision":
branches[branch_name] = SnapshotBranchInfo(
name=branch_name,
alias=False,
revision=target_id,
date=None,
directory=None,
message=None,
url=None,
)
revision_to_branch[target_id].add(branch_name)
elif target_type == "release":
release_to_branch[target_id].add(branch_name)
elif target_type == "alias":
branch_aliases[branch_name] = target_id
# FIXME: handle pointers to other object types
def _add_release_info(branch, release, alias=False):
releases[branch] = SnapshotReleaseInfo(
name=release["name"],
alias=alias,
branch_name=branch,
date=format_utc_iso_date(release["date"]),
directory=None,
id=release["id"],
message=release["message"],
target_type=release["target_type"],
target=release["target"],
url=None,
)
def _add_branch_info(branch, revision, alias=False):
branches[branch] = SnapshotBranchInfo(
name=branch,
alias=alias,
revision=revision["id"],
directory=revision["directory"],
date=format_utc_iso_date(revision["date"]),
message=revision["message"],
url=None,
)
releases_info = archive.lookup_release_multiple(release_to_branch.keys())
for release in releases_info:
if release is None:
continue
branches_to_update = release_to_branch[release["id"]]
for branch in branches_to_update:
_add_release_info(branch, release)
if release["target_type"] == "revision":
revision_to_release[release["target"]].update(branches_to_update)
revisions = archive.lookup_revision_multiple(
set(revision_to_branch.keys()) | set(revision_to_release.keys())
)
for revision in revisions:
if not revision:
continue
for branch in revision_to_branch[revision["id"]]:
_add_branch_info(branch, revision)
for release_id in revision_to_release[revision["id"]]:
releases[release_id]["directory"] = revision["directory"]
resolved_aliases = {}
for branch_alias, branch_target in branch_aliases.items():
resolved_alias = archive.lookup_snapshot_alias(snapshot["id"], branch_alias)
resolved_aliases[branch_alias] = resolved_alias
if resolved_alias is None:
continue
target_type = resolved_alias["target_type"]
target = resolved_alias["target"]
if target_type == "revision":
revision = archive.lookup_revision(target)
_add_branch_info(branch_alias, revision, alias=True)
elif target_type == "release":
release = archive.lookup_release(target)
_add_release_info(branch_alias, release, alias=True)
if branch_alias in branches:
branches[branch_alias]["name"] = branch_alias
ret_branches = list(sorted(branches.values(), key=lambda b: b["name"]))
ret_releases = list(sorted(releases.values(), key=lambda b: b["name"]))
return ret_branches, ret_releases, resolved_aliases
def get_snapshot_content(
snapshot_id: str,
) -> Tuple[List[SnapshotBranchInfo], List[SnapshotReleaseInfo], Dict[str, Any]]:
"""Returns the lists of branches and releases
associated to a swh snapshot.
That list is put in cache in order to speedup the navigation
in the swh-web/browse ui.
.. warning:: At most 1000 branches contained in the snapshot
will be returned for performance reasons.
Args:
snapshot_id: hexadecimal representation of the snapshot identifier
Returns:
A tuple with three members. The first one is a list of dict describing
the snapshot branches. The second one is a list of dict describing the
snapshot releases. The third one is a dict mapping resolved branch
aliases to their real target.
Raises:
NotFoundExc if the snapshot does not exist
"""
cache_entry_id = "swh_snapshot_%s" % snapshot_id
cache_entry = cache.get(cache_entry_id)
if cache_entry:
return (
cache_entry["branches"],
cache_entry["releases"],
cache_entry.get("aliases", {}),
)
branches: List[SnapshotBranchInfo] = []
releases: List[SnapshotReleaseInfo] = []
aliases: Dict[str, Any] = {}
snapshot_content_max_size = get_config()["snapshot_content_max_size"]
if snapshot_id:
snapshot = archive.lookup_snapshot(
snapshot_id, branches_count=snapshot_content_max_size
)
branches, releases, aliases = process_snapshot_branches(snapshot)
cache.set(
cache_entry_id, {"branches": branches, "releases": releases, "aliases": aliases}
)
return branches, releases, aliases
def get_origin_visit_snapshot(
origin_info: OriginInfo,
visit_ts: Optional[str] = None,
visit_id: Optional[int] = None,
snapshot_id: Optional[str] = None,
) -> Tuple[List[SnapshotBranchInfo], List[SnapshotReleaseInfo], Dict[str, Any]]:
"""Returns the lists of branches and releases associated to an origin for
a given visit.
The visit is expressed by either:
* a snapshot identifier
* a timestamp, if no visit with that exact timestamp is found,
the closest one from the provided timestamp will be used.
If no visit parameter is provided, it returns the list of branches
found for the latest visit.
That list is put in cache in order to speedup the navigation
in the swh-web/browse ui.
.. warning:: At most 1000 branches contained in the snapshot
will be returned for performance reasons.
Args:
origin_info: a dict filled with origin information
visit_ts: an ISO 8601 datetime string to parse
visit_id: visit id for disambiguation in case several visits have
the same timestamp
snapshot_id: if provided, visit associated to the snapshot will be processed
Returns:
A tuple with three members. The first one is a list of dict describing
the origin branches for the given visit.
The second one is a list of dict describing the origin releases
for the given visit. The third one is a dict mapping resolved branch
aliases to their real target.
Raises:
NotFoundExc if the origin or its visit are not found
"""
visit_info = get_origin_visit(origin_info, visit_ts, visit_id, snapshot_id)
return get_snapshot_content(visit_info["snapshot"])
def get_snapshot_context(
snapshot_id: Optional[str] = None,
origin_url: Optional[str] = None,
timestamp: Optional[str] = None,
visit_id: Optional[int] = None,
branch_name: Optional[str] = None,
release_name: Optional[str] = None,
revision_id: Optional[str] = None,
path: Optional[str] = None,
browse_context: str = "directory",
) -> SnapshotContext:
"""
Utility function to compute relevant information when navigating
the archive in a snapshot context. The snapshot is either
referenced by its id or it will be retrieved from an origin visit.
Args:
snapshot_id: hexadecimal representation of a snapshot identifier
origin_url: an origin_url
timestamp: a datetime string for retrieving the closest
visit of the origin
visit_id: optional visit id for disambiguation in case
of several visits with the same timestamp
branch_name: optional branch name set when browsing the snapshot in
that scope (will default to "HEAD" if not provided)
release_name: optional release name set when browsing the snapshot in
that scope
revision_id: optional revision identifier set when browsing the snapshot in
that scope
path: optional path of the object currently browsed in the snapshot
browse_context: indicates which type of object is currently browsed
Returns:
A dict filled with snapshot context information.
Raises:
swh.web.common.exc.NotFoundExc: if no snapshot is found for the visit
of an origin.
"""
assert origin_url is not None or snapshot_id is not None
origin_info = None
visit_info = None
url_args = {}
query_params: Dict[str, Any] = {}
origin_visits_url = None
if origin_url:
if visit_id is not None:
query_params["visit_id"] = visit_id
elif snapshot_id is not None:
query_params["snapshot"] = snapshot_id
origin_info = archive.lookup_origin({"url": origin_url})
visit_info = get_origin_visit(origin_info, timestamp, visit_id, snapshot_id)
formatted_date = format_utc_iso_date(visit_info["date"])
visit_info["formatted_date"] = formatted_date
snapshot_id = visit_info["snapshot"]
if not snapshot_id:
raise NotFoundExc(
"No snapshot associated to the visit of origin "
"%s on %s" % (escape(origin_url), formatted_date)
)
# provided timestamp is not necessarily equals to the one
# of the retrieved visit, so get the exact one in order
# to use it in the urls generated below
if timestamp:
timestamp = visit_info["date"]
branches, releases, aliases = get_origin_visit_snapshot(
origin_info, timestamp, visit_id, snapshot_id
)
query_params["origin_url"] = origin_info["url"]
origin_visits_url = reverse(
"browse-origin-visits", query_params={"origin_url": origin_info["url"]}
)
if timestamp is not None:
query_params["timestamp"] = format_utc_iso_date(
timestamp, "%Y-%m-%dT%H:%M:%SZ"
)
visit_url = reverse("browse-origin-directory", query_params=query_params)
visit_info["url"] = visit_url
branches_url = reverse("browse-origin-branches", query_params=query_params)
releases_url = reverse("browse-origin-releases", query_params=query_params)
else:
assert snapshot_id is not None
branches, releases, aliases = get_snapshot_content(snapshot_id)
url_args = {"snapshot_id": snapshot_id}
branches_url = reverse("browse-snapshot-branches", url_args=url_args)
releases_url = reverse("browse-snapshot-releases", url_args=url_args)
releases = list(reversed(releases))
snapshot_sizes_cache_id = f"swh_snapshot_{snapshot_id}_sizes"
snapshot_sizes = cache.get(snapshot_sizes_cache_id)
if snapshot_sizes is None:
snapshot_sizes = archive.lookup_snapshot_sizes(snapshot_id)
cache.set(snapshot_sizes_cache_id, snapshot_sizes)
is_empty = (snapshot_sizes["release"] + snapshot_sizes["revision"]) == 0
swh_snp_id = swhid("snapshot", snapshot_id)
if visit_info:
timestamp = format_utc_iso_date(visit_info["date"])
if origin_info:
browse_view_name = f"browse-origin-{browse_context}"
else:
browse_view_name = f"browse-snapshot-{browse_context}"
release_id = None
root_directory = None
snapshot_total_size = snapshot_sizes["release"] + snapshot_sizes["revision"]
if path is not None:
query_params["path"] = path
if snapshot_total_size and revision_id is not None:
revision = archive.lookup_revision(revision_id)
root_directory = revision["directory"]
branches.append(
SnapshotBranchInfo(
name=revision_id,
alias=False,
revision=revision_id,
directory=root_directory,
date=revision["date"],
message=revision["message"],
url=None,
)
)
branch_name = revision_id
query_params["revision"] = revision_id
elif snapshot_total_size and release_name:
release = _get_release(releases, release_name, snapshot_id)
if release is None:
_branch_not_found(
"release",
release_name,
snapshot_id,
snapshot_sizes,
origin_info,
timestamp,
visit_id,
)
else:
root_directory = release["directory"]
revision_id = release["target"]
release_id = release["id"]
query_params["release"] = release_name
elif snapshot_total_size:
if branch_name:
query_params["branch"] = branch_name
branch = _get_branch(branches, branch_name or "HEAD", snapshot_id)
if branch is None:
_branch_not_found(
"branch",
branch_name,
snapshot_id,
snapshot_sizes,
origin_info,
timestamp,
visit_id,
)
else:
branch_name = branch["name"]
revision_id = branch["revision"]
root_directory = branch["directory"]
for b in branches:
branch_query_params = dict(query_params)
branch_query_params.pop("release", None)
if b["name"] != b["revision"]:
branch_query_params.pop("revision", None)
branch_query_params["branch"] = b["name"]
b["url"] = reverse(
browse_view_name, url_args=url_args, query_params=branch_query_params
)
for r in releases:
release_query_params = dict(query_params)
release_query_params.pop("branch", None)
release_query_params.pop("revision", None)
release_query_params["release"] = r["name"]
r["url"] = reverse(
browse_view_name, url_args=url_args, query_params=release_query_params,
)
revision_info = None
if revision_id:
try:
revision_info = archive.lookup_revision(revision_id)
except NotFoundExc:
pass
else:
revision_info["date"] = format_utc_iso_date(revision_info["date"])
revision_info["committer_date"] = format_utc_iso_date(
revision_info["committer_date"]
)
if revision_info["message"]:
message_lines = revision_info["message"].split("\n")
revision_info["message_header"] = message_lines[0]
else:
revision_info["message_header"] = ""
snapshot_context = SnapshotContext(
branch=branch_name,
branch_alias=branch_name in aliases,
branches=branches,
branches_url=branches_url,
is_empty=is_empty,
origin_info=origin_info,
origin_visits_url=origin_visits_url,
release=release_name,
release_alias=release_name in aliases,
release_id=release_id,
query_params=query_params,
releases=releases,
releases_url=releases_url,
revision_id=revision_id,
revision_info=revision_info,
root_directory=root_directory,
snapshot_id=snapshot_id,
snapshot_sizes=snapshot_sizes,
snapshot_swhid=swh_snp_id,
url_args=url_args,
visit_info=visit_info,
)
if revision_info:
revision_info["revision_url"] = gen_revision_url(revision_id, snapshot_context)
return snapshot_context
def _build_breadcrumbs(snapshot_context: SnapshotContext, path: str):
origin_info = snapshot_context["origin_info"]
url_args = snapshot_context["url_args"]
query_params = dict(snapshot_context["query_params"])
root_directory = snapshot_context["root_directory"]
path_info = gen_path_info(path)
if origin_info:
browse_view_name = "browse-origin-directory"
else:
browse_view_name = "browse-snapshot-directory"
breadcrumbs = []
if root_directory:
query_params.pop("path", None)
breadcrumbs.append(
{
"name": root_directory[:7],
"url": reverse(
browse_view_name, url_args=url_args, query_params=query_params
),
}
)
for pi in path_info:
query_params["path"] = pi["path"]
breadcrumbs.append(
{
"name": pi["name"],
"url": reverse(
browse_view_name, url_args=url_args, query_params=query_params
),
}
)
return breadcrumbs
def _check_origin_url(snapshot_id, origin_url):
if snapshot_id is None and origin_url is None:
raise BadInputExc("An origin URL must be provided as query parameter.")
def browse_snapshot_directory(
request, snapshot_id=None, origin_url=None, timestamp=None, path=None
):
"""
Django view implementation for browsing a directory in a snapshot context.
"""
_check_origin_url(snapshot_id, origin_url)
snapshot_context = get_snapshot_context(
snapshot_id=snapshot_id,
origin_url=origin_url,
timestamp=timestamp,
visit_id=request.GET.get("visit_id"),
path=path,
browse_context="directory",
branch_name=request.GET.get("branch"),
release_name=request.GET.get("release"),
revision_id=request.GET.get("revision"),
)
root_directory = snapshot_context["root_directory"]
sha1_git = root_directory
error_info = {
"status_code": 200,
"description": None,
}
if root_directory and path:
try:
dir_info = archive.lookup_directory_with_path(root_directory, path)
sha1_git = dir_info["target"]
except NotFoundExc as e:
sha1_git = None
error_info["status_code"] = 404
error_info["description"] = f"NotFoundExc: {str(e)}"
dirs = []
files = []
if sha1_git:
dirs, files = get_directory_entries(sha1_git)
origin_info = snapshot_context["origin_info"]
visit_info = snapshot_context["visit_info"]
url_args = snapshot_context["url_args"]
query_params = dict(snapshot_context["query_params"])
revision_id = snapshot_context["revision_id"]
snapshot_id = snapshot_context["snapshot_id"]
if origin_info:
browse_view_name = "browse-origin-directory"
else:
browse_view_name = "browse-snapshot-directory"
breadcrumbs = _build_breadcrumbs(snapshot_context, path)
path = "" if path is None else (path + "/")
for d in dirs:
if d["type"] == "rev":
d["url"] = reverse("browse-revision", url_args={"sha1_git": d["target"]})
else:
query_params["path"] = path + d["name"]
d["url"] = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
sum_file_sizes = 0
readmes = {}
if origin_info:
browse_view_name = "browse-origin-content"
else:
browse_view_name = "browse-snapshot-content"
for f in files:
query_params["path"] = path + f["name"]
f["url"] = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
if f["length"] is not None:
sum_file_sizes += f["length"]
f["length"] = filesizeformat(f["length"])
if f["name"].lower().startswith("readme"):
readmes[f["name"]] = f["checksums"]["sha1"]
readme_name, readme_url, readme_html = get_readme_to_display(readmes)
if origin_info:
browse_view_name = "browse-origin-log"
else:
browse_view_name = "browse-snapshot-log"
history_url = None
if snapshot_id != _empty_snapshot_id:
query_params.pop("path", None)
history_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
nb_files = None
nb_dirs = None
dir_path = None
if root_directory:
nb_files = len(files)
nb_dirs = len(dirs)
sum_file_sizes = filesizeformat(sum_file_sizes)
dir_path = "/" + path
revision_found = True
if sha1_git is None and revision_id is not None:
try:
archive.lookup_revision(revision_id)
except NotFoundExc:
revision_found = False
swh_objects = [
SWHObjectInfo(object_type=DIRECTORY, object_id=sha1_git),
SWHObjectInfo(object_type=REVISION, object_id=revision_id),
SWHObjectInfo(object_type=SNAPSHOT, object_id=snapshot_id),
]
visit_date = None
visit_type = None
if visit_info:
visit_date = format_utc_iso_date(visit_info["date"])
visit_type = visit_info["type"]
release_id = snapshot_context["release_id"]
if release_id:
swh_objects.append(SWHObjectInfo(object_type=RELEASE, object_id=release_id))
dir_metadata = DirectoryMetadata(
object_type=DIRECTORY,
object_id=sha1_git,
directory=sha1_git,
nb_files=nb_files,
nb_dirs=nb_dirs,
sum_file_sizes=sum_file_sizes,
root_directory=root_directory,
path=dir_path,
revision=revision_id,
revision_found=revision_found,
release=release_id,
snapshot=snapshot_id,
origin_url=origin_url,
visit_date=visit_date,
visit_type=visit_type,
)
vault_cooking = {
"directory_context": True,
"directory_id": sha1_git,
"revision_context": True,
"revision_id": revision_id,
}
swhids_info = get_swhids_info(swh_objects, snapshot_context, dir_metadata)
dir_path = "/".join([bc["name"] for bc in breadcrumbs]) + "/"
context_found = "snapshot: %s" % snapshot_context["snapshot_id"]
if origin_info:
context_found = "origin: %s" % origin_info["url"]
heading = "Directory - %s - %s - %s" % (
dir_path,
snapshot_context["branch"],
context_found,
)
top_right_link = None
if not snapshot_context["is_empty"]:
top_right_link = {
"url": history_url,
"icon": swh_object_icons["revisions history"],
"text": "History",
}
return render(
request,
"browse/directory.html",
{
"heading": heading,
"swh_object_name": "Directory",
"swh_object_metadata": dir_metadata,
"dirs": dirs,
"files": files,
"breadcrumbs": breadcrumbs if root_directory else [],
"top_right_link": top_right_link,
"readme_name": readme_name,
"readme_url": readme_url,
"readme_html": readme_html,
"snapshot_context": snapshot_context,
"vault_cooking": vault_cooking,
"show_actions": True,
"swhids_info": swhids_info,
"error_code": error_info["status_code"],
"error_message": http_status_code_message.get(error_info["status_code"]),
"error_description": error_info["description"],
},
status=error_info["status_code"],
)
def browse_snapshot_content(
request,
snapshot_id=None,
origin_url=None,
timestamp=None,
path=None,
selected_language=None,
):
"""
Django view implementation for browsing a content in a snapshot context.
"""
_check_origin_url(snapshot_id, origin_url)
if path is None:
raise BadInputExc("The path of a content must be given as query parameter.")
snapshot_context = get_snapshot_context(
snapshot_id=snapshot_id,
origin_url=origin_url,
timestamp=timestamp,
visit_id=request.GET.get("visit_id"),
path=path,
browse_context="content",
branch_name=request.GET.get("branch"),
release_name=request.GET.get("release"),
revision_id=request.GET.get("revision"),
)
root_directory = snapshot_context["root_directory"]
sha1_git = None
query_string = None
content_data = {}
directory_id = None
split_path = path.split("/")
filename = split_path[-1]
filepath = path[: -len(filename)]
error_info = {
"status_code": 200,
"description": None,
}
if root_directory:
try:
content_info = archive.lookup_directory_with_path(root_directory, path)
sha1_git = content_info["target"]
query_string = "sha1_git:" + sha1_git
content_data = request_content(query_string)
if filepath:
dir_info = archive.lookup_directory_with_path(root_directory, filepath)
directory_id = dir_info["target"]
else:
directory_id = root_directory
except NotFoundExc as e:
error_info["status_code"] = 404
error_info["description"] = f"NotFoundExc: {str(e)}"
revision_id = snapshot_context["revision_id"]
origin_info = snapshot_context["origin_info"]
visit_info = snapshot_context["visit_info"]
snapshot_id = snapshot_context["snapshot_id"]
if content_data.get("raw_data") is not None:
content_display_data = prepare_content_for_display(
content_data["raw_data"], content_data["mimetype"], path
)
content_data.update(content_display_data)
# Override language with user-selected language
if selected_language is not None:
content_data["language"] = selected_language
available_languages = None
if content_data.get("mimetype") is not None and "text/" in content_data["mimetype"]:
available_languages = highlightjs.get_supported_languages()
breadcrumbs = _build_breadcrumbs(snapshot_context, filepath)
breadcrumbs.append({"name": filename, "url": None})
browse_content_link = gen_content_link(sha1_git)
content_raw_url = None
if query_string:
content_raw_url = reverse(
"browse-content-raw",
url_args={"query_string": query_string},
query_params={"filename": filename},
)
content_checksums = content_data.get("checksums", {})
swh_objects = [
SWHObjectInfo(object_type=CONTENT, object_id=content_checksums.get("sha1_git")),
SWHObjectInfo(object_type=DIRECTORY, object_id=directory_id),
SWHObjectInfo(object_type=REVISION, object_id=revision_id),
SWHObjectInfo(object_type=SNAPSHOT, object_id=snapshot_id),
]
visit_date = None
visit_type = None
if visit_info:
visit_date = format_utc_iso_date(visit_info["date"])
visit_type = visit_info["type"]
release_id = snapshot_context["release_id"]
if release_id:
swh_objects.append(SWHObjectInfo(object_type=RELEASE, object_id=release_id))
content_metadata = ContentMetadata(
object_type=CONTENT,
object_id=content_checksums.get("sha1_git"),
sha1=content_checksums.get("sha1"),
sha1_git=content_checksums.get("sha1_git"),
sha256=content_checksums.get("sha256"),
blake2s256=content_checksums.get("blake2s256"),
content_url=browse_content_link,
mimetype=content_data.get("mimetype"),
encoding=content_data.get("encoding"),
size=filesizeformat(content_data.get("length", 0)),
language=content_data.get("language"),
root_directory=root_directory,
path=f"/{filepath}",
filename=filename,
directory=directory_id,
revision=revision_id,
release=release_id,
snapshot=snapshot_id,
origin_url=origin_url,
visit_date=visit_date,
visit_type=visit_type,
)
swhids_info = get_swhids_info(swh_objects, snapshot_context, content_metadata)
content_path = "/".join([bc["name"] for bc in breadcrumbs])
context_found = "snapshot: %s" % snapshot_context["snapshot_id"]
if origin_info:
context_found = "origin: %s" % origin_info["url"]
heading = "Content - %s - %s - %s" % (
content_path,
snapshot_context["branch"],
context_found,
)
top_right_link = None
if not snapshot_context["is_empty"]:
top_right_link = {
"url": content_raw_url,
"icon": swh_object_icons["content"],
"text": "Raw File",
}
return render(
request,
"browse/content.html",
{
"heading": heading,
"swh_object_name": "Content",
"swh_object_metadata": content_metadata,
"content": content_data.get("content_data"),
"content_size": content_data.get("length"),
"max_content_size": content_display_max_size,
"filename": filename,
"encoding": content_data.get("encoding"),
"mimetype": content_data.get("mimetype"),
"language": content_data.get("language"),
"available_languages": available_languages,
"breadcrumbs": breadcrumbs if root_directory else [],
"top_right_link": top_right_link,
"snapshot_context": snapshot_context,
"vault_cooking": None,
"show_actions": True,
"swhids_info": swhids_info,
"error_code": error_info["status_code"],
"error_message": http_status_code_message.get(error_info["status_code"]),
"error_description": error_info["description"],
},
status=error_info["status_code"],
)
PER_PAGE = 100
def browse_snapshot_log(request, snapshot_id=None, origin_url=None, timestamp=None):
"""
Django view implementation for browsing a revision history in a
snapshot context.
"""
_check_origin_url(snapshot_id, origin_url)
snapshot_context = get_snapshot_context(
snapshot_id=snapshot_id,
origin_url=origin_url,
timestamp=timestamp,
visit_id=request.GET.get("visit_id"),
browse_context="log",
branch_name=request.GET.get("branch"),
release_name=request.GET.get("release"),
revision_id=request.GET.get("revision"),
)
revision_id = snapshot_context["revision_id"]
per_page = int(request.GET.get("per_page", PER_PAGE))
offset = int(request.GET.get("offset", 0))
revs_ordering = request.GET.get("revs_ordering", "committer_date")
session_key = "rev_%s_log_ordering_%s" % (revision_id, revs_ordering)
rev_log_session = request.session.get(session_key, None)
rev_log = []
revs_walker_state = None
if rev_log_session:
rev_log = rev_log_session["rev_log"]
revs_walker_state = rev_log_session["revs_walker_state"]
if len(rev_log) < offset + per_page:
revs_walker = archive.get_revisions_walker(
revs_ordering,
revision_id,
max_revs=offset + per_page + 1,
state=revs_walker_state,
)
rev_log += [rev["id"] for rev in revs_walker]
revs_walker_state = revs_walker.export_state()
revs = rev_log[offset : offset + per_page]
revision_log = archive.lookup_revision_multiple(revs)
request.session[session_key] = {
"rev_log": rev_log,
"revs_walker_state": revs_walker_state,
}
origin_info = snapshot_context["origin_info"]
visit_info = snapshot_context["visit_info"]
url_args = snapshot_context["url_args"]
query_params = snapshot_context["query_params"]
snapshot_id = snapshot_context["snapshot_id"]
query_params["per_page"] = per_page
revs_ordering = request.GET.get("revs_ordering", "")
query_params["revs_ordering"] = revs_ordering or None
if origin_info:
browse_view_name = "browse-origin-log"
else:
browse_view_name = "browse-snapshot-log"
prev_log_url = None
if len(rev_log) > offset + per_page:
query_params["offset"] = offset + per_page
prev_log_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
next_log_url = None
if offset != 0:
query_params["offset"] = offset - per_page
next_log_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
revision_log_data = format_log_entries(revision_log, per_page, snapshot_context)
browse_rev_link = gen_revision_link(revision_id)
browse_log_link = gen_revision_log_link(revision_id)
browse_snp_link = gen_snapshot_link(snapshot_id)
revision_metadata = {
"context-independent revision": browse_rev_link,
"context-independent revision history": browse_log_link,
"context-independent snapshot": browse_snp_link,
"snapshot": snapshot_id,
}
if origin_info:
revision_metadata["origin url"] = origin_info["url"]
revision_metadata["origin visit date"] = format_utc_iso_date(visit_info["date"])
revision_metadata["origin visit type"] = visit_info["type"]
swh_objects = [
SWHObjectInfo(object_type=REVISION, object_id=revision_id),
SWHObjectInfo(object_type=SNAPSHOT, object_id=snapshot_id),
]
release_id = snapshot_context["release_id"]
if release_id:
swh_objects.append(SWHObjectInfo(object_type=RELEASE, object_id=release_id))
browse_rel_link = gen_release_link(release_id)
revision_metadata["release"] = release_id
revision_metadata["context-independent release"] = browse_rel_link
swhids_info = get_swhids_info(swh_objects, snapshot_context)
context_found = "snapshot: %s" % snapshot_context["snapshot_id"]
if origin_info:
context_found = "origin: %s" % origin_info["url"]
heading = "Revision history - %s - %s" % (snapshot_context["branch"], context_found)
return render(
request,
"browse/revision-log.html",
{
"heading": heading,
"swh_object_name": "Revisions history",
"swh_object_metadata": revision_metadata,
"revision_log": revision_log_data,
"revs_ordering": revs_ordering,
"next_log_url": next_log_url,
"prev_log_url": prev_log_url,
"breadcrumbs": None,
"top_right_link": None,
"snapshot_context": snapshot_context,
"vault_cooking": None,
"show_actions": True,
"swhids_info": swhids_info,
},
)
def browse_snapshot_branches(
request, snapshot_id=None, origin_url=None, timestamp=None
):
"""
Django view implementation for browsing a list of branches in a snapshot
context.
"""
_check_origin_url(snapshot_id, origin_url)
snapshot_context = get_snapshot_context(
snapshot_id=snapshot_id,
origin_url=origin_url,
timestamp=timestamp,
visit_id=request.GET.get("visit_id"),
)
branches_bc = request.GET.get("branches_breadcrumbs", "")
branches_bc = branches_bc.split(",") if branches_bc else []
branches_from = branches_bc[-1] if branches_bc else ""
origin_info = snapshot_context["origin_info"]
url_args = snapshot_context["url_args"]
query_params = snapshot_context["query_params"]
if origin_info:
browse_view_name = "browse-origin-directory"
else:
browse_view_name = "browse-snapshot-directory"
snapshot = archive.lookup_snapshot(
snapshot_context["snapshot_id"],
branches_from,
PER_PAGE + 1,
target_types=["revision", "alias"],
)
displayed_branches, _, _ = process_snapshot_branches(snapshot)
for branch in displayed_branches:
rev_query_params = {}
if origin_info:
rev_query_params["origin_url"] = origin_info["url"]
revision_url = reverse(
"browse-revision",
url_args={"sha1_git": branch["revision"]},
query_params=query_params,
)
query_params["branch"] = branch["name"]
directory_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
del query_params["branch"]
branch["revision_url"] = revision_url
branch["directory_url"] = directory_url
if origin_info:
browse_view_name = "browse-origin-branches"
else:
browse_view_name = "browse-snapshot-branches"
prev_branches_url = None
next_branches_url = None
if branches_bc:
query_params_prev = dict(query_params)
query_params_prev["branches_breadcrumbs"] = ",".join(branches_bc[:-1])
prev_branches_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params_prev
)
elif branches_from:
prev_branches_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
if snapshot["next_branch"] is not None:
query_params_next = dict(query_params)
next_branch = displayed_branches[-1]["name"]
del displayed_branches[-1]
branches_bc.append(next_branch)
query_params_next["branches_breadcrumbs"] = ",".join(branches_bc)
next_branches_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params_next
)
heading = "Branches - "
if origin_info:
heading += "origin: %s" % origin_info["url"]
else:
heading += "snapshot: %s" % snapshot_id
return render(
request,
"browse/branches.html",
{
"heading": heading,
"swh_object_name": "Branches",
"swh_object_metadata": {},
"top_right_link": None,
"displayed_branches": displayed_branches,
"prev_branches_url": prev_branches_url,
"next_branches_url": next_branches_url,
"snapshot_context": snapshot_context,
},
)
def browse_snapshot_releases(
request, snapshot_id=None, origin_url=None, timestamp=None
):
"""
Django view implementation for browsing a list of releases in a snapshot
context.
"""
_check_origin_url(snapshot_id, origin_url)
snapshot_context = get_snapshot_context(
snapshot_id=snapshot_id,
origin_url=origin_url,
timestamp=timestamp,
visit_id=request.GET.get("visit_id"),
)
rel_bc = request.GET.get("releases_breadcrumbs", "")
rel_bc = rel_bc.split(",") if rel_bc else []
rel_from = rel_bc[-1] if rel_bc else ""
origin_info = snapshot_context["origin_info"]
url_args = snapshot_context["url_args"]
query_params = snapshot_context["query_params"]
snapshot = archive.lookup_snapshot(
snapshot_context["snapshot_id"],
rel_from,
PER_PAGE + 1,
target_types=["release", "alias"],
)
_, displayed_releases, _ = process_snapshot_branches(snapshot)
for release in displayed_releases:
query_params_tgt = {"snapshot": snapshot_id}
if origin_info:
query_params_tgt["origin_url"] = origin_info["url"]
release_url = reverse(
"browse-release",
url_args={"sha1_git": release["id"]},
query_params=query_params_tgt,
)
target_url = ""
if release["target_type"] == "revision":
target_url = reverse(
"browse-revision",
url_args={"sha1_git": release["target"]},
query_params=query_params_tgt,
)
elif release["target_type"] == "directory":
target_url = reverse(
"browse-directory",
url_args={"sha1_git": release["target"]},
query_params=query_params_tgt,
)
elif release["target_type"] == "content":
target_url = reverse(
"browse-content",
url_args={"query_string": release["target"]},
query_params=query_params_tgt,
)
elif release["target_type"] == "release":
target_url = reverse(
"browse-release",
url_args={"sha1_git": release["target"]},
query_params=query_params_tgt,
)
release["release_url"] = release_url
release["target_url"] = target_url
if origin_info:
browse_view_name = "browse-origin-releases"
else:
browse_view_name = "browse-snapshot-releases"
prev_releases_url = None
next_releases_url = None
if rel_bc:
query_params_prev = dict(query_params)
query_params_prev["releases_breadcrumbs"] = ",".join(rel_bc[:-1])
prev_releases_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params_prev
)
elif rel_from:
prev_releases_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params
)
if snapshot["next_branch"] is not None:
query_params_next = dict(query_params)
next_rel = displayed_releases[-1]["branch_name"]
del displayed_releases[-1]
rel_bc.append(next_rel)
query_params_next["releases_breadcrumbs"] = ",".join(rel_bc)
next_releases_url = reverse(
browse_view_name, url_args=url_args, query_params=query_params_next
)
heading = "Releases - "
if origin_info:
heading += "origin: %s" % origin_info["url"]
else:
heading += "snapshot: %s" % snapshot_id
return render(
request,
"browse/releases.html",
{
"heading": heading,
"top_panel_visible": False,
"top_panel_collapsible": False,
"swh_object_name": "Releases",
"swh_object_metadata": {},
"top_right_link": None,
"displayed_releases": displayed_releases,
"prev_releases_url": prev_releases_url,
"next_releases_url": next_releases_url,
"snapshot_context": snapshot_context,
"vault_cooking": None,
"show_actions": False,
},
)

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