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feat: Comprehensive deep crawl streaming functionality restoration

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🚀 Major Achievements:
- ✅ ORJSON Serialization System: Complete implementation with custom handlers
- ✅ Global Deprecated Properties System: DeprecatedPropertiesMixin for automatic exclusion
- ✅ Deep Crawl Streaming: Fully restored with proper CrawlResultContainer handling
- ✅ Docker Client Streaming: Fixed async generator patterns and result type checking
- ✅ Server API Improvements: Correct method selection logic and streaming responses
- ✅ Type Safety: Dict-as-logger detection to prevent crashes

📊 Test Results: 100% success rate on comprehensive test suite (10/10 tests passing)

🔧 Files Modified:
- crawl4ai/models.py: ORJSON + DeprecatedPropertiesMixin implementation
- deploy/docker/api.py: Streaming endpoint fixes + CrawlResultContainer handling
- deploy/docker/server.py: Production imports + ORJSON response handling
- crawl4ai/docker_client.py: Async generator streaming fixes
- crawl4ai/deep_crawling/bfs_strategy.py: Logger type safety
- .gitignore: Development environment cleanup
- tests/test_comprehensive_fixes.py: Rich-based comprehensive test suite

🎯 Impact: Production-ready deep crawl streaming functionality with comprehensive testing coverage
This commit is contained in:
AHMET YILMAZ
2025-08-15 15:31:36 +08:00
parent 11b310edef
commit 07e9d651fb
7 changed files with 853 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
crawl4ai/deep_crawling/bfs_strategy.py
View File

@@ -38,7 +38,14 @@ class BFSDeepCrawlStrategy(DeepCrawlStrategy):
self.include_external = include_external
self.score_threshold = score_threshold
self.max_pages = max_pages
self.logger = logger or logging.getLogger(__name__)
# Type check for logger
if isinstance(logger, dict):
logging.getLogger(__name__).warning(
"BFSDeepCrawlStrategy received a dict as logger; falling back to default logger."
)
self.logger = logging.getLogger(__name__)
else:
self.logger = logger or logging.getLogger(__name__)
self.stats = TraversalStats(start_time=datetime.now())
self._cancel_event = asyncio.Event()
self._pages_crawled = 0

38
crawl4ai/docker_client.py
View File

@@ -30,7 +30,7 @@ class Crawl4aiDockerClient:
def __init__(
self,
base_url: str = "http://localhost:8000",
timeout: float = 30.0,
timeout: float = 600.0, # Increased to 10 minutes for crawling operations
verify_ssl: bool = True,
verbose: bool = True,
log_file: Optional[str] = None
@@ -113,21 +113,8 @@ class Crawl4aiDockerClient:
self.logger.info(f"Crawling {len(urls)} URLs {'(streaming)' if is_streaming else ''}", tag="CRAWL")
if is_streaming:
async def stream_results() -> AsyncGenerator[CrawlResult, None]:
async with self._http_client.stream("POST", f"{self.base_url}/crawl/stream", json=data) as response:
response.raise_for_status()
async for line in response.aiter_lines():
if line.strip():
result = json.loads(line)
if "error" in result:
self.logger.error_status(url=result.get("url", "unknown"), error=result["error"])
continue
self.logger.url_status(url=result.get("url", "unknown"), success=True, timing=result.get("timing", 0.0))
if result.get("status") == "completed":
continue
else:
yield CrawlResult(**result)
return stream_results()
# Create and return the async generator directly
return self._stream_crawl_results(data)
response = await self._request("POST", "/crawl", json=data)
result_data = response.json()
@@ -138,6 +125,25 @@ class Crawl4aiDockerClient:
self.logger.success(f"Crawl completed with {len(results)} results", tag="CRAWL")
return results[0] if len(results) == 1 else results
async def _stream_crawl_results(self, data: Dict[str, Any]) -> AsyncGenerator[CrawlResult, None]:
"""Internal method to handle streaming crawl results."""
async with self._http_client.stream("POST", f"{self.base_url}/crawl/stream", json=data) as response:
response.raise_for_status()
async for line in response.aiter_lines():
if line.strip():
result = json.loads(line)
if "error" in result:
self.logger.error_status(url=result.get("url", "unknown"), error=result["error"])
continue
# Check if this is a crawl result (has required fields)
if "url" in result and "success" in result:
self.logger.url_status(url=result.get("url", "unknown"), success=result.get("success", False), timing=result.get("timing", 0.0))
yield CrawlResult(**result)
# Skip status-only messages
elif result.get("status") == "completed":
continue
async def get_schema(self) -> Dict[str, Any]:
"""Retrieve configuration schemas."""
response = await self._request("GET", "/schema")

185
crawl4ai/models.py
View File

@@ -1,4 +1,36 @@
from pydantic import BaseModel, HttpUrl, PrivateAttr, Field
"""
Crawl4AI Models Module
This module contains Pydantic models used throughout the Crawl4AI library.
Key Features:
- ORJSONModel: Base model with ORJSON serialization support
- DeprecatedPropertiesMixin: Global system for handling deprecated properties
- CrawlResult: Main result model with backward compatibility support
Deprecated Properties System:
The DeprecatedPropertiesMixin provides a global way to handle deprecated properties
across all models. Instead of manually excluding deprecated properties in each
model_dump() call, you can simply override the get_deprecated_properties() method:
Example:
class MyModel(ORJSONModel):
name: str
old_field: Optional[str] = None
def get_deprecated_properties(self) -> set[str]:
return {'old_field', 'another_deprecated_field'}
@property
def old_field(self):
raise AttributeError("old_field is deprecated, use name instead")
The system automatically excludes these properties from serialization, preventing
property objects from appearing in JSON output.
"""
from pydantic import BaseModel, ConfigDict,HttpUrl, PrivateAttr, Field
from typing import List, Dict, Optional, Callable, Awaitable, Union, Any
from typing import AsyncGenerator
from typing import Generic, TypeVar
@@ -8,7 +40,7 @@ from .ssl_certificate import SSLCertificate
from datetime import datetime
from datetime import timedelta
import orjson
###############################
# Dispatcher Models
###############################
@@ -91,7 +123,122 @@ class TokenUsage:
completion_tokens_details: Optional[dict] = None
prompt_tokens_details: Optional[dict] = None
class UrlModel(BaseModel):
def orjson_default(obj):
# Handle datetime (if not already handled by orjson)
if isinstance(obj, datetime):
return obj.isoformat()
# Handle property objects (convert to string or something else)
if isinstance(obj, property):
return str(obj)
# Last resort: convert to string
return str(obj)
class DeprecatedPropertiesMixin:
"""
Mixin to handle deprecated properties in Pydantic models.
Classes that inherit from this mixin can define deprecated properties
that will be automatically excluded from serialization.
Usage:
1. Override the get_deprecated_properties() method to return a set of deprecated property names
2. The model_dump method will automatically exclude these properties
Example:
class MyModel(ORJSONModel):
def get_deprecated_properties(self) -> set[str]:
return {'old_field', 'legacy_property'}
name: str
old_field: Optional[str] = None # Field definition
@property
def old_field(self): # Property that overrides the field
raise AttributeError("old_field is deprecated, use name instead")
"""
def get_deprecated_properties(self) -> set[str]:
"""
Get deprecated property names for this model.
Override this method in subclasses to define deprecated properties.
Returns:
set[str]: Set of deprecated property names
"""
return set()
@classmethod
def get_all_deprecated_properties(cls) -> set[str]:
"""
Get all deprecated properties from this class and all parent classes.
Returns:
set[str]: Set of all deprecated property names
"""
deprecated_props = set()
# Create an instance to call the instance method
try:
# Try to create a dummy instance to get deprecated properties
dummy_instance = cls.__new__(cls)
deprecated_props.update(dummy_instance.get_deprecated_properties())
except Exception:
# If we can't create an instance, check for class-level definitions
pass
# Also check parent classes
for klass in cls.__mro__:
if hasattr(klass, 'get_deprecated_properties') and klass != DeprecatedPropertiesMixin:
try:
dummy_instance = klass.__new__(klass)
deprecated_props.update(dummy_instance.get_deprecated_properties())
except Exception:
pass
return deprecated_props
def model_dump(self, *args, **kwargs):
"""
Override model_dump to automatically exclude deprecated properties.
This method:
1. Gets the existing exclude set from kwargs
2. Adds all deprecated properties defined in get_deprecated_properties()
3. Calls the parent model_dump with the updated exclude set
"""
# Get the default exclude set, or create empty set if None
exclude = kwargs.get('exclude', set())
if exclude is None:
exclude = set()
elif not isinstance(exclude, set):
exclude = set(exclude) if exclude else set()
# Add deprecated properties for this instance
exclude.update(self.get_deprecated_properties())
kwargs['exclude'] = exclude
return super().model_dump(*args, **kwargs)
class ORJSONModel(DeprecatedPropertiesMixin, BaseModel):
model_config = ConfigDict(
ser_json_timedelta="iso8601", # Optional: format timedelta
ser_json_bytes="utf8", # Optional: bytes → UTF-8 string
)
def model_dump_json(self, **kwargs) -> bytes:
"""Custom JSON serialization using orjson"""
return orjson.dumps(self.model_dump(**kwargs), default=orjson_default)
@classmethod
def model_validate_json(cls, json_data: Union[str, bytes], **kwargs):
"""Custom JSON deserialization using orjson"""
if isinstance(json_data, str):
json_data = json_data.encode()
return cls.model_validate(orjson.loads(json_data), **kwargs)
class UrlModel(ORJSONModel):
url: HttpUrl
forced: bool = False
@@ -108,7 +255,7 @@ class TraversalStats:
total_depth_reached: int = 0
current_depth: int = 0
class DispatchResult(BaseModel):
class DispatchResult(ORJSONModel):
task_id: str
memory_usage: float
peak_memory: float
@@ -116,7 +263,7 @@ class DispatchResult(BaseModel):
end_time: Union[datetime, float]
error_message: str = ""
class MarkdownGenerationResult(BaseModel):
class MarkdownGenerationResult(ORJSONModel):
raw_markdown: str
markdown_with_citations: str
references_markdown: str
@@ -126,7 +273,7 @@ class MarkdownGenerationResult(BaseModel):
def __str__(self):
return self.raw_markdown
class CrawlResult(BaseModel):
class CrawlResult(ORJSONModel):
url: str
html: str
fit_html: Optional[str] = None
@@ -156,6 +303,10 @@ class CrawlResult(BaseModel):
class Config:
arbitrary_types_allowed = True
def get_deprecated_properties(self) -> set[str]:
"""Define deprecated properties that should be excluded from serialization."""
return {'fit_html', 'fit_markdown', 'markdown_v2'}
# NOTE: The StringCompatibleMarkdown class, custom __init__ method, property getters/setters,
# and model_dump override all exist to support a smooth transition from markdown as a string
# to markdown as a MarkdownGenerationResult object, while maintaining backward compatibility.
@@ -245,14 +396,16 @@ class CrawlResult(BaseModel):
1. PrivateAttr fields are excluded from serialization by default
2. We need to maintain backward compatibility by including the 'markdown' field
in the serialized output
3. We're transitioning from 'markdown_v2' to enhancing 'markdown' to hold
the same type of data
3. Uses the DeprecatedPropertiesMixin to automatically exclude deprecated properties
Future developers: This method ensures that the markdown content is properly
serialized despite being stored in a private attribute. If the serialization
requirements change, this is where you would update the logic.
serialized despite being stored in a private attribute. The deprecated properties
are automatically handled by the mixin.
"""
# Use the parent class method which handles deprecated properties automatically
result = super().model_dump(*args, **kwargs)
# Add the markdown content if it exists
if self._markdown is not None:
result["markdown"] = self._markdown.model_dump()
return result
@@ -307,7 +460,7 @@ RunManyReturn = Union[
# 1. Replace the private attribute and property with a standard field
# 2. Update any serialization logic that might depend on the current behavior
class AsyncCrawlResponse(BaseModel):
class AsyncCrawlResponse(ORJSONModel):
html: str
response_headers: Dict[str, str]
js_execution_result: Optional[Dict[str, Any]] = None
@@ -328,7 +481,7 @@ class AsyncCrawlResponse(BaseModel):
###############################
# Scraping Models
###############################
class MediaItem(BaseModel):
class MediaItem(ORJSONModel):
src: Optional[str] = ""
data: Optional[str] = ""
alt: Optional[str] = ""
@@ -340,7 +493,7 @@ class MediaItem(BaseModel):
width: Optional[int] = None
class Link(BaseModel):
class Link(ORJSONModel):
href: Optional[str] = ""
text: Optional[str] = ""
title: Optional[str] = ""
@@ -353,7 +506,7 @@ class Link(BaseModel):
total_score: Optional[float] = None # Combined score from intrinsic and contextual scores
class Media(BaseModel):
class Media(ORJSONModel):
images: List[MediaItem] = []
videos: List[
MediaItem
@@ -364,12 +517,12 @@ class Media(BaseModel):
tables: List[Dict] = [] # Table data extracted from HTML tables
class Links(BaseModel):
class Links(ORJSONModel):
internal: List[Link] = []
external: List[Link] = []
class ScrapingResult(BaseModel):
class ScrapingResult(ORJSONModel):
cleaned_html: str
success: bool
media: Media = Media()