Differential D7732 Diff 27959 swh/loader/git/loader.py

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swh/loader/git/loader.py

from typing import Any, Callable, Dict, Iterable, Iterator, List, Optional, Set, Type from typing import Any, Callable, Dict, Iterable, Iterator, List, Optional, Set, Type

import dulwich.client import dulwich.client

from dulwich.errors import GitProtocolError, NotGitRepository from dulwich.errors import GitProtocolError, NotGitRepository

from dulwich.object_store import ObjectStoreGraphWalker from dulwich.object_store import ObjectStoreGraphWalker

from dulwich.objects import ShaFile from dulwich.objects import ShaFile

from dulwich.pack import PackData, PackInflater from dulwich.pack import PackData, PackInflater

from swh.core.statsd import statsd

from swh.loader.core.loader import DVCSLoader from swh.loader.core.loader import DVCSLoader

from swh.loader.exception import NotFound from swh.loader.exception import NotFound

from swh.model import hashutil from swh.model import hashutil

from swh.model.model import ( from swh.model.model import (

BaseContent, BaseContent,

Directory, Directory,

Release, Release,

Revision, Revision,

Snapshot, Snapshot,

SnapshotBranch, SnapshotBranch,

TargetType, TargetType,

) )

from swh.storage.algos.snapshot import snapshot_get_latest from swh.storage.algos.snapshot import snapshot_get_latest

from swh.storage.interface import StorageInterface from swh.storage.interface import StorageInterface

from . import converters, dumb, utils from . import converters, dumb, utils

from .utils import HexBytes from .utils import HexBytes

olasdUnsubmitted

Not Done

from .utils import HexBytes

- STATSD_PREFIX = "swh.loader.git.loader"

+ STATSD_PREFIX = "swh_loader_git"

logger = logging.getLogger(__name__)

olasd:

vlorentzAuthorUnsubmitted

Done

actually not relevant anymore, as I'll use the core's self.statsd

vlorentz: actually not relevant anymore, as I'll use the core's self.statsd

STATSD_PREFIX = "swh.loader.git.loader"

logger = logging.getLogger(__name__) logger = logging.getLogger(__name__)

class RepoRepresentation: class RepoRepresentation:

"""Repository representation for a Software Heritage origin.""" """Repository representation for a Software Heritage origin."""

def __init__( def __init__(

self, self,

storage, storage,

base_snapshot: Optional[Snapshot] = None, base_snapshot: Optional[Snapshot] = None,

incremental: bool = True, incremental: bool = True,

statsd_incremental_mode: str = None,

): ):

self.storage = storage self.storage = storage

self.incremental = incremental self.incremental = incremental

self.statsd_incremental_mode = statsd_incremental_mode

if base_snapshot and incremental: if base_snapshot and incremental:

self.base_snapshot: Snapshot = base_snapshot self.base_snapshot: Snapshot = base_snapshot

else: else:

self.base_snapshot = Snapshot(branches={}) self.base_snapshot = Snapshot(branches={})

self.heads: Set[HexBytes] = set() self.heads: Set[HexBytes] = set()

Show All 28 Lines def determine_wants(self, refs: Dict[bytes, HexBytes]) -> List[HexBytes]:

for ref_name, ref_target in refs.items(): for ref_name, ref_target in refs.items():

if utils.ignore_branch_name(ref_name): if utils.ignore_branch_name(ref_name):

continue continue

remote_heads.add(ref_target) remote_heads.add(ref_target)

logger.debug("local_heads_count=%s", len(local_heads)) logger.debug("local_heads_count=%s", len(local_heads))

logger.debug("remote_heads_count=%s", len(remote_heads)) logger.debug("remote_heads_count=%s", len(remote_heads))

wanted_refs = list(remote_heads - local_heads) wanted_refs = list(remote_heads - local_heads)

logger.debug("wanted_refs_count=%s", len(wanted_refs)) logger.debug("wanted_refs_count=%s", len(wanted_refs))

statsd.histogram(

f"{STATSD_PREFIX}.ratio_ignored_refs",

len(remote_heads - set(refs.values())) / len(refs),

tags={"incremental": self.statsd_incremental_mode},

)

statsd.histogram(

f"{STATSD_PREFIX}.ratio_known_refs",

len(local_heads & remote_heads) / len(remote_heads),

tags={"incremental": self.statsd_incremental_mode},

olasdUnsubmitted

Not Done

logger.debug("wanted_refs_count=%s", len(wanted_refs))

statsd.histogram(

- f"{STATSD_PREFIX}.ratio_ignored_refs",

+ f"{STATSD_PREFIX}.ignored_refs_ratio",

len(remote_heads - set(refs.values())) / len(refs),

tags={"incremental": self.statsd_incremental_mode},

)

statsd.histogram(

- f"{STATSD_PREFIX}.ratio_known_refs",

+ f"{STATSD_PREFIX}.known_refs_ratio",

len(local_heads & remote_heads) / len(remote_heads),

tags={"incremental": self.statsd_incremental_mode},

)

return wanted_refs

We will need these to be configured with specific buckets as well (same as D7727)

olasd: We will need these to be configured with specific buckets as well (same as D7727)

vlorentzAuthorUnsubmitted

Done

already fixed, and renamed to _percent as recommended in prometheus' documentation

vlorentz: already fixed, and renamed to _percent as recommended in prometheus' documentation

)

return wanted_refs return wanted_refs

@dataclass @dataclass

class FetchPackReturn: class FetchPackReturn:

remote_refs: Dict[bytes, HexBytes] remote_refs: Dict[bytes, HexBytes]

symbolic_refs: Dict[bytes, HexBytes] symbolic_refs: Dict[bytes, HexBytes]

pack_buffer: SpooledTemporaryFile pack_buffer: SpooledTemporaryFile

pack_size: int pack_size: int

class GitLoader(DVCSLoader): class GitLoader(DVCSLoader):

"""A bulk loader for a git repository""" f"""A bulk loader for a git repository

Emits the following statsd stats:

* increments ``{STATSD_PREFIX}.incremental.<incremental_mode>``

* histogram ``{STATSD_PREFIX}.ratio_ignored_refs`` is the ratio of refs ignored

over all refs of the remote repository

* histogram ``{STATSD_PREFIX}.ratio_known_refs`` is the ratio of (non-ignored)

remote heads that are already local over all non-ignored remote heads

The latter two are tagged with ``{{"incremental": "<incremental_mode>"}}`` where

``incremental_mode`` is one of:

* ``from_same_origin`` when the origin was already loaded

* ``from_parent_origin`` when the origin was not already loaded,

but it was detected as a forge-fork of an origin that was already loaded

* ``no_previous_snapshot`` when the origin was not already loaded,

and it was detected as a forge-fork of origins that were not already loaded either

* ``no_parent_origin`` when the origin was no already loaded, and it was not

detected as a forge-fork of any other origin

* ``disabled`` when incremental loading is disabled by configuration

"""

olasdUnsubmitted

Not Done

f-strings can't be used as docstrings.

olasd: f-strings can't be used as docstrings.

vlorentzAuthorUnsubmitted

Done

aw, sad. anyway, I don't need them anymore now that I'm removing the STATSD_PREFIX.

vlorentz: aw, sad. anyway, I don't need them anymore now that I'm removing the STATSD_PREFIX.

visit_type = "git" visit_type = "git"

statsd_incremental_mode: str

"""value of the 'incremental' tag set on statsd histograms for refs stats"""

def __init__( def __init__(

self, self,

storage: StorageInterface, storage: StorageInterface,

url: str, url: str,

incremental: bool = True, incremental: bool = True,

repo_representation: Type[RepoRepresentation] = RepoRepresentation, repo_representation: Type[RepoRepresentation] = RepoRepresentation,

pack_size_bytes: int = 4 * 1024 * 1024 * 1024, pack_size_bytes: int = 4 * 1024 * 1024 * 1024,

temp_file_cutoff: int = 100 * 1024 * 1024, temp_file_cutoff: int = 100 * 1024 * 1024,

▲ Show 20 Lines • Show All 108 Lines • ▼ Show 20 Lines class GitLoader(DVCSLoader):

def prepare(self) -> None: def prepare(self) -> None:

assert self.origin is not None assert self.origin is not None

prev_snapshot: Optional[Snapshot] = None prev_snapshot: Optional[Snapshot] = None

if self.incremental: if self.incremental:

prev_snapshot = self.get_full_snapshot(self.origin.url) prev_snapshot = self.get_full_snapshot(self.origin.url)

if prev_snapshot:

if self.parent_origins is not None: self.statsd_incremental_mode = "from_same_origin"

elif self.parent_origins is not None:

# If this is the first time we load this origin and it is a forge # If this is the first time we load this origin and it is a forge

# fork, load incrementally from one of the origins it was forked from, # fork, load incrementally from one of the origins it was forked from,

# closest parent first # closest parent first

for parent_origin in self.parent_origins: for parent_origin in self.parent_origins:

prev_snapshot = self.get_full_snapshot(parent_origin.url)

if prev_snapshot is not None: if prev_snapshot is not None:

self.statsd_incremental_mode = "from_parent_origin"

break break

prev_snapshot = self.get_full_snapshot(parent_origin.url) else:

self.statsd_incremental_mode = "no_previous_snapshot"

else:

self.statsd_incremental_mode = "no_parent_origin"

else:

self.statsd_incremental_mode = "disabled"

olasdUnsubmitted

Not Done

self.statsd_incremental_mode = "disabled"

- statsd.increment(f"{STATSD_PREFIX}.incremental.{self.statsd_incremental_mode}")

+ statsd.increment(f"{STATSD_PREFIX}_visits_total", tags={"incremental_enabled": "True/False", "incremental_snapshot_origin": "none/self/parent"})

if prev_snapshot is not None:

As you may have guessed from my comment on D7726, I think this should be set as a tag on a common metric, rather than generate a set of distinct metrics.

And this should be pushed as a "constant" tag to used on further calls to statsd in this loader, without having to bother with passing the list of tags around on all calls, e.g. the ones for the refs ratios.

I also wonder if this should be a couple of tags rather than a single one:

incremental_enabled = "True"/"False"
(when incremental_enabled == "True") incremental_snapshot_origin="self"/"parent"/"none"

Is it worth distinguishing "has parent, no snapshot found" no_previous_snapshot from "doesn't have parent, no snapshot found" no_parent_origin? If so, maybe we can add a has_parent tag?)

olasd: As you may have guessed from my comment on D7726, I think this should be set as a tag on a…

vlorentzAuthorUnsubmitted

Done

already fixed too, but in a different way. I can do it your way too, if you prefer.

Is it worth distinguishing "has parent, no snapshot found" no_previous_snapshot from "doesn't have parent, no snapshot found" no_parent_origin?

I don't know, but there is no harm in storing it, is there?

vlorentz: already fixed too, but in a different way. I can do it your way too, if you prefer. > Is it…

statsd.increment(f"{STATSD_PREFIX}.incremental.{self.statsd_incremental_mode}")

if prev_snapshot is not None: if prev_snapshot is not None:

self.base_snapshot = prev_snapshot self.base_snapshot = prev_snapshot

olasdUnsubmitted

Done

This should end with _total to conform with prom naming conventions

olasd: This should end with `_total` to conform with prom naming conventions

else: else:

self.base_snapshot = Snapshot(branches={}) self.base_snapshot = Snapshot(branches={})

def fetch_data(self) -> bool: def fetch_data(self) -> bool:

assert self.origin is not None assert self.origin is not None

base_repo = self.repo_representation( base_repo = self.repo_representation(

storage=self.storage, storage=self.storage,

base_snapshot=self.base_snapshot, base_snapshot=self.base_snapshot,

incremental=self.incremental, incremental=self.incremental,

statsd_incremental_mode=self.statsd_incremental_mode,

) )

def do_progress(msg: bytes) -> None: def do_progress(msg: bytes) -> None:

sys.stderr.buffer.write(msg) sys.stderr.buffer.write(msg)

sys.stderr.flush() sys.stderr.flush()

try: try:

fetch_info = self.fetch_pack_from_origin( fetch_info = self.fetch_pack_from_origin(

▲ Show 20 Lines • Show All 258 Lines • Show Last 20 Lines