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utils.py
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utils.py
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import re
from typing import Optional
import structlog
log = structlog.get_logger()
def parse_version(raw_version: str) -> str:
"""Resolve semantic versioning used in javascript packages."""
try:
validate_version(raw_version)
except ValueError:
log.exception("analytics.utils.parse_version.error", raw_version=raw_version)
return None
if "=" in raw_version:
return raw_version.split("=")[1]
if raw_version.startswith("^"):
return resolve_caret_version(raw_version)
if raw_version.startswith("~"):
return resolve_tilde_version(raw_version)
return resolve_unknown_format(raw_version)
def validate_version(version: str) -> bool: # Ignore RadonBear
if not version:
raise ValueError("Version given is an empty string?!?!¿!?")
if version.count(".") > 2:
raise ValueError(f"Version {version} has too many dots")
if not any(True for char in version if char.isdigit()):
raise ValueError(f"Version {version} has no digits in it")
if " " in version or "||" in version or "#" in version:
raise ValueError(f"Version {version} has unsupported version specifiers")
if ("<" in version or ">" in version) and "=" not in version:
raise ValueError(f"Version {version} has unsupported version specifiers")
def resolve_caret_version(version: str) -> str:
temp_version = ""
for version_digit in version[1:].split("."):
temp_version += version_digit
if version_digit.isdigit() and int(version_digit) != 0:
break
temp_version += "."
return temp_version
def resolve_tilde_version(version: str) -> str:
version = version[1:].split(".")
if any(True for version_digit in version[:~0] if int(version_digit) != 0):
del version[~0]
return ".".join(version)
def resolve_unknown_format(version: str) -> str:
temp_version = []
for version_digit in version.split("."):
if version_digit.isdigit():
temp_version.append(version_digit)
else:
break
return ".".join(temp_version)
class DockerImageId:
"""Represents parsed docker image id."""
# pylint: disable=too-many-instance-attributes # Ignore PyCommentedCodeBear
def __init__(self, image: str): # Ignore RadonBear
self.__full_image_id = " ".join(image.split())
self.__registry = None
self.__registry_host_name = None
self.__registry_port = None
self.__full_image_name = None
self.__full_image_name_no_tag = None
self.__username = None
self.__full_repository_name = None
self.__repository_name = None
self.__namespaces = None
self.__tag = None
self.__version = None
self.__full_os = None
self.__os = None
self.__os_version = None
self.__alias = None
@property
def full_image_id(self) -> str:
"""Full provided image identifier."""
return self.__full_image_id
@property
def registry(self) -> str:
"""Docker registry.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
Docker registry is recognised as:
a) "localhost" present before first "/" of the full docker id.
b) "." present before first "/" of the full docker id.
"""
if "/" in self.full_image_id:
registry_part, _, _ = self.full_image_id.partition("/")
if "localhost" in registry_part or "." in registry_part:
# This really is a registry string.
self.__registry, _, _ = self.full_image_id.partition("/")
return self.__registry
@property
def registry_host_name(self) -> str:
"""Docker registry host name.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
"""
self.__registry_host_name = self.registry
if self.registry and ":" in self.registry:
self.__registry_host_name, _, _ = self.registry.partition(":")
return self.__registry_host_name
@property
def registry_port(self) -> str:
"""Docker registry port.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾
"""
if self.registry and ":" in self.registry:
_, _, self.__registry_port = self.registry.partition(":")
return self.__registry_port
@property
def full_image_name(self) -> str:
"""Whole name of the image without the registry.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
"""
self.__full_image_name = self.full_image_id
if self.registry:
_, _, self.__full_image_name = self.full_image_id.partition("/")
return self.__full_image_name
@property
def tag(self) -> str:
"""Tag.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
"""
if ":" in self.full_image_name:
_, _, self.__tag = self.full_image_name.partition(":")
if " as " in self.__tag:
self.__tag, _, _ = self.__tag.partition(" as ")
return self.__tag
@property
def full_image_name_no_tag(self) -> str:
"""Full image name without the tag and alias.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
"""
self.__full_image_name_no_tag, _, _ = self.full_image_name.partition(":")
self.__full_image_name_no_tag, _, _ = self.__full_image_name_no_tag.partition(
" as "
)
return self.__full_image_name_no_tag
@property
def username(self) -> str:
"""Username (first part of the image path by convention).
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾
"""
if "/" in self.full_image_name_no_tag:
self.__username, _, _ = self.full_image_name_no_tag.partition("/")
return self.__username
@property
def full_repository_name(self) -> str:
"""Full repository name without "username".
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
"""
self.__full_repository_name = self.full_image_name_no_tag
if "/" in self.__full_repository_name:
_, _, self.__full_repository_name = self.__full_repository_name.partition(
"/"
)
return self.__full_repository_name
@property
def repository_name(self) -> str:
"""First part of the full repository name path (repository name by convention).
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾
"""
self.__repository_name = self.full_repository_name
if "/" in self.__repository_name:
# Take the first part as repo name if there still are more slashes present.
self.__repository_name, _, _ = self.__repository_name.partition("/")
return self.__repository_name
@property
def namespaces(self) -> []:
"""Namespaces" - all path parts after username and image name as a list.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
"""
if "/" in self.full_repository_name:
_, _, namespaces = self.full_repository_name.partition("/")
self.__namespaces = namespaces.split("/")
return self.__namespaces
@property
def alias(self) -> str:
"""Image identifier alias.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾‾
"""
if " as " in self.full_image_id:
_, _, self.__alias = self.full_image_id.partition(" as ")
return self.__alias
@property
def version(self) -> str:
"""Version of the image.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾
"""
self.__version = self.tag
if self.__version and "-" in self.__version:
self.__version, _, _ = self.tag.partition("-")
return self.__version
@property
def full_os(self) -> str:
"""OS part - parsed from tag when "-" is present.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾‾‾‾
"""
if self.tag and "-" in self.tag:
_, _, self.__full_os = self.tag.partition("-")
return self.__full_os
@property
def os(self) -> str:
"""OS without version.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾‾‾‾
"""
self.__os = self.__full_os
if self.full_os:
os_version = self.__parse_semantic_version(self.__full_os)
if os_version:
self.__os = self.__full_os.replace(os_version, "")
return self.__os
@property
def os_version(self) -> str:
"""OS version.
my.registry.com:5005/special-name/my-image/namespace/another-namespace:0.1.1-alpine3.9 as base-image
‾‾‾
"""
self.__os_version = self.__parse_semantic_version(self.__full_os)
return self.__os_version
@staticmethod
def __parse_semantic_version(string: Optional[str]) -> Optional[str]:
"""Parse semantic version from provided input."""
if string:
match = re.search(r"\d+[\d|\.]*\d", string)
if match:
return match.group()
return None
def __str__(self):
return str(self.__dict__)