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63 lines
1.7 KiB
Python
63 lines
1.7 KiB
Python
import re
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from typing import Optional
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MIN_COLLECTION_LENGTH = 3
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MAX_COLLECTION_LENGTH = 63
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DEFAULT_COLLECTION = "default_collection"
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# Compiled regex patterns for better performance
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INVALID_CHARS_PATTERN = re.compile(r"[^a-zA-Z0-9_-]")
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IPV4_PATTERN = re.compile(r"^(\d{1,3}\.){3}\d{1,3}$")
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def is_ipv4_pattern(name: str) -> bool:
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"""
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Check if a string matches an IPv4 address pattern.
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Args:
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name: The string to check
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Returns:
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True if the string matches an IPv4 pattern, False otherwise
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"""
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return bool(IPV4_PATTERN.match(name))
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def sanitize_collection_name(name: Optional[str]) -> str:
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"""
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Sanitize a collection name to meet ChromaDB requirements:
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1. 3-63 characters long
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2. Starts and ends with alphanumeric character
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3. Contains only alphanumeric characters, underscores, or hyphens
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4. No consecutive periods
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5. Not a valid IPv4 address
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Args:
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name: The original collection name to sanitize
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Returns:
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A sanitized collection name that meets ChromaDB requirements
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"""
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if not name:
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return DEFAULT_COLLECTION
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if is_ipv4_pattern(name):
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name = f"ip_{name}"
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sanitized = INVALID_CHARS_PATTERN.sub("_", name)
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if not sanitized[0].isalnum():
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sanitized = "a" + sanitized
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if not sanitized[-1].isalnum():
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sanitized = sanitized[:-1] + "z"
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if len(sanitized) < MIN_COLLECTION_LENGTH:
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sanitized = sanitized + "x" * (MIN_COLLECTION_LENGTH - len(sanitized))
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if len(sanitized) > MAX_COLLECTION_LENGTH:
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sanitized = sanitized[:MAX_COLLECTION_LENGTH]
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if not sanitized[-1].isalnum():
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sanitized = sanitized[:-1] + "z"
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return sanitized
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