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* add docker utils from SDK * fix docker pull progress * use agent docker utils instead of SDK * pylint
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Original file line number | Diff line number | Diff line change |
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# coding: utf-8 | ||
from __future__ import annotations | ||
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import json | ||
from enum import Enum | ||
from typing import Optional | ||
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from supervisely.app import DialogWindowError | ||
from supervisely.task.progress import Progress | ||
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class PullPolicy(Enum): | ||
def __str__(self): | ||
return str(self.value) | ||
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ALWAYS = "Always".lower() | ||
IF_AVAILABLE = "IfAvailable".lower() | ||
IF_NOT_PRESENT = "IfNotPresent".lower() | ||
NEVER = "Never".lower() | ||
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class PullStatus(Enum): | ||
START = "Pulling fs layer" | ||
DOWNLOAD = "Downloading" | ||
EXTRACT = "Extracting" | ||
COMPLETE_LOAD = "Download complete" | ||
COMPLETE_PULL = "Pull complete" | ||
OTHER = "Other (unknown)" | ||
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def is_equal(self, status: str) -> bool: | ||
return status == self.value | ||
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@classmethod | ||
def from_str(cls, status: Optional[str]) -> PullStatus: | ||
dct = { | ||
"Pulling fs layer": PullStatus.START, | ||
"Downloading": PullStatus.DOWNLOAD, | ||
"Extracting": PullStatus.EXTRACT, | ||
"Download complete": PullStatus.COMPLETE_LOAD, | ||
"Pull complete": PullStatus.COMPLETE_PULL, | ||
} | ||
return dct.get(status, PullStatus.OTHER) | ||
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def docker_pull_if_needed(docker_api, docker_image_name, policy, logger, progress=True): | ||
logger.info( | ||
"docker_pull_if_needed args", | ||
extra={ | ||
"policy": policy, | ||
"type(policy)": type(policy), | ||
"policy == PullPolicy.ALWAYS": str(policy) == str(PullPolicy.ALWAYS), | ||
"policy == PullPolicy.NEVER": str(policy) == str(PullPolicy.NEVER), | ||
"policy == PullPolicy.IF_NOT_PRESENT": str(policy) == str(PullPolicy.IF_NOT_PRESENT), | ||
"policy == PullPolicy.IF_AVAILABLE": str(policy) == str(PullPolicy.IF_AVAILABLE), | ||
}, | ||
) | ||
if str(policy) == str(PullPolicy.ALWAYS): | ||
if progress is False: | ||
_docker_pull(docker_api, docker_image_name, logger) | ||
else: | ||
_docker_pull_progress(docker_api, docker_image_name, logger) | ||
elif str(policy) == str(PullPolicy.NEVER): | ||
pass | ||
elif str(policy) == str(PullPolicy.IF_NOT_PRESENT): | ||
if not _docker_image_exists(docker_api, docker_image_name): | ||
if progress is False: | ||
_docker_pull(docker_api, docker_image_name, logger) | ||
else: | ||
_docker_pull_progress(docker_api, docker_image_name, logger) | ||
elif str(policy) == str(PullPolicy.IF_AVAILABLE): | ||
if progress is False: | ||
_docker_pull(docker_api, docker_image_name, logger, raise_exception=True) | ||
else: | ||
_docker_pull_progress(docker_api, docker_image_name, logger, raise_exception=True) | ||
else: | ||
raise RuntimeError(f"Unknown pull policy {str(policy)}") | ||
if not _docker_image_exists(docker_api, docker_image_name): | ||
raise DialogWindowError( | ||
title=f"Docker image {docker_image_name} not found. Agent's PULL_POLICY is {str(policy)}.", | ||
description=( | ||
"The initiation of the pulling process was either prevented due to the pull policy settings " | ||
"or it was halted mid-way because the host lacks sufficient disk space." | ||
), | ||
) | ||
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def _docker_pull(docker_api, docker_image_name, logger, raise_exception=True): | ||
from docker.errors import DockerException | ||
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logger.info("Docker image will be pulled", extra={"image_name": docker_image_name}) | ||
progress_dummy = Progress("Pulling image...", 1, ext_logger=logger) | ||
progress_dummy.iter_done_report() | ||
try: | ||
pulled_img = docker_api.images.pull(docker_image_name) | ||
logger.info( | ||
"Docker image has been pulled", | ||
extra={"pulled": {"tags": pulled_img.tags, "id": pulled_img.id}}, | ||
) | ||
except DockerException as e: | ||
if raise_exception is True: | ||
raise DockerException( | ||
"Unable to pull image: see actual error above. " | ||
"Please, run the task again or contact support team." | ||
) | ||
else: | ||
logger.warn("Pulling step is skipped. Unable to pull image: {!r}.".format(str(e))) | ||
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def _docker_pull_progress(docker_api, docker_image_name, logger, raise_exception=True): | ||
logger.info("Docker image will be pulled", extra={"image_name": docker_image_name}) | ||
from docker.errors import DockerException | ||
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try: | ||
layers_total_load = {} | ||
layers_current_load = {} | ||
layers_total_extract = {} | ||
layers_current_extract = {} | ||
started = set() | ||
loaded = set() | ||
pulled = set() | ||
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progress_full = Progress("Preparing dockerimage", 1, ext_logger=logger) | ||
progres_ext = Progress("Extracting layers", 1, is_size=True, ext_logger=logger) | ||
progress_load = Progress("Downloading layers", 1, is_size=True, ext_logger=logger) | ||
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for line in docker_api.api.pull(docker_image_name, stream=True, decode=True): | ||
status = PullStatus.from_str(line.get("status", None)) | ||
layer_id = line.get("id", None) | ||
progress_details = line.get("progressDetail", {}) | ||
need_report = True | ||
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if status is PullStatus.START: | ||
started.add(layer_id) | ||
need_report = False | ||
elif status is PullStatus.DOWNLOAD: | ||
layers_current_load[layer_id] = progress_details.get("current", 0) | ||
layers_total_load[layer_id] = progress_details.get( | ||
"total", layers_current_load[layer_id] | ||
) | ||
total_load = sum(layers_total_load.values()) | ||
current_load = sum(layers_current_load.values()) | ||
if total_load > progress_load.total: | ||
progress_load.set(current_load, total_load) | ||
elif (current_load - progress_load.current) / total_load > 0.01: | ||
progress_load.set(current_load, total_load) | ||
else: | ||
need_report = False | ||
elif status is PullStatus.COMPLETE_LOAD: | ||
loaded.add(layer_id) | ||
elif status is PullStatus.EXTRACT: | ||
layers_current_extract[layer_id] = progress_details.get("current", 0) | ||
layers_total_extract[layer_id] = progress_details.get( | ||
"total", layers_current_extract[layer_id] | ||
) | ||
total_ext = sum(layers_total_extract.values()) | ||
current_ext = sum(layers_current_extract.values()) | ||
if total_ext > progres_ext.total: | ||
progres_ext.set(current_ext, total_ext) | ||
elif (current_ext - progres_ext.current) / total_ext > 0.01: | ||
progres_ext.set(current_ext, total_ext) | ||
else: | ||
need_report = False | ||
elif status is PullStatus.COMPLETE_PULL: | ||
pulled.add(layer_id) | ||
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if started != pulled: | ||
if need_report: | ||
if started == loaded: | ||
progres_ext.report_progress() | ||
else: | ||
progress_load.report_progress() | ||
elif len(pulled) > 0: | ||
progress_full.report_progress() | ||
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progress_full.iter_done() | ||
progress_full.report_progress() | ||
logger.info("Docker image has been pulled", extra={"image_name": docker_image_name}) | ||
except DockerException as e: | ||
if raise_exception is True: | ||
raise e | ||
# raise DockerException( | ||
# "Unable to pull image: see actual error above. " | ||
# "Please, run the task again or contact support team." | ||
# ) | ||
else: | ||
logger.warn("Pulling step is skipped. Unable to pull image: {!r}.".format(repr(e))) | ||
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def _docker_image_exists(docker_api, docker_image_name): | ||
from docker.errors import ImageNotFound | ||
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try: | ||
docker_img = docker_api.images.get(docker_image_name) | ||
except ImageNotFound: | ||
return False | ||
return True |
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