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2026-01-23 18:17:45 +08:00
import json
import os
from pathlib import Path
from urllib.parse import urlparse
from collections import defaultdict
from .rules import is_ignored_url, get_key_mask, get_value_type
class SchemaExtractor:
def __init__(self):
# schemas: category -> schema_node
self.schemas = {}
self.url_counts = defaultdict(int)
def get_url_category(self, url):
"""
Derives a category name from the URL.
"""
parsed = urlparse(url)
path = parsed.path
parts = path.strip('/').split('/')
cleaned_parts = []
for p in parts:
# Mask Match IDs (e.g., g161-...)
if p.startswith('g161-'):
cleaned_parts.append('{match_id}')
# Mask other long numeric IDs
elif p.isdigit() and len(p) > 4:
cleaned_parts.append('{id}')
else:
cleaned_parts.append(p)
category = "/".join(cleaned_parts)
if not category:
category = "root"
return category
def process_directory(self, root_dir):
"""
Iterates over all iframe_network.json files in the directory.
"""
p = Path(root_dir)
# Use rglob to find all iframe_network.json files
files = list(p.rglob("iframe_network.json"))
print(f"Found {len(files)} files to process.")
for i, filepath in enumerate(files):
if i % 10 == 0:
print(f"Processing {i}/{len(files)}: {filepath}")
self.process_file(filepath)
def process_file(self, filepath):
try:
with open(filepath, 'r', encoding='utf-8') as f:
data = json.load(f)
except Exception as e:
# print(f"Error reading {filepath}: {e}")
return
if not isinstance(data, list):
return
for entry in data:
url = entry.get('url', '')
if not url or is_ignored_url(url):
continue
status = entry.get('status')
if status != 200:
continue
body = entry.get('body')
# Skip empty bodies or bodies that are just empty dicts if that's not useful
if not body:
continue
category = self.get_url_category(url)
self.url_counts[category] += 1
if category not in self.schemas:
self.schemas[category] = None
self.schemas[category] = self.merge_value(self.schemas[category], body)
def merge_value(self, schema, value):
"""
Merges a value into the existing schema.
"""
val_type = get_value_type(value)
if schema is None:
schema = {
"types": {val_type},
"count": 1
}
else:
schema["count"] += 1
schema["types"].add(val_type)
# Handle Dicts
if isinstance(value, dict):
if "properties" not in schema:
schema["properties"] = {}
for k, v in value.items():
masked_key = get_key_mask(k)
schema["properties"][masked_key] = self.merge_value(
schema["properties"].get(masked_key),
v
)
# Handle Lists
elif isinstance(value, list):
if "items" not in schema:
schema["items"] = None
for item in value:
schema["items"] = self.merge_value(schema["items"], item)
# Handle Primitives (Capture examples if needed, currently just tracking types)
else:
if "examples" not in schema:
schema["examples"] = set()
if len(schema["examples"]) < 5:
# Store string representation to avoid type issues in set
schema["examples"].add(str(value))
return schema
def to_serializable(self, schema):
"""
Converts the internal schema structure (with sets) to a JSON-serializable format.
"""
if schema is None:
return None
res = {
"types": list(sorted(schema["types"])),
"count": schema["count"]
}
if "properties" in schema:
res["properties"] = {
k: self.to_serializable(v)
for k, v in sorted(schema["properties"].items())
}
if "items" in schema:
res["items"] = self.to_serializable(schema["items"])
if "examples" in schema:
res["examples"] = list(sorted(schema["examples"]))
return res
def export_report(self, output_path):
report = {}
for category, schema in self.schemas.items():
report[category] = self.to_serializable(schema)
with open(output_path, 'w', encoding='utf-8') as f:
json.dump(report, f, indent=2, ensure_ascii=False)
print(f"Report saved to {output_path}")
def export_markdown_summary(self, output_path):
"""
Generates a Markdown summary of the hierarchy.
"""
with open(output_path, 'w', encoding='utf-8') as f:
f.write("# Schema Hierarchy Report\n\n")
for category, schema in sorted(self.schemas.items()):
f.write(f"## Category: `{category}`\n")
f.write(f"**Total Requests**: {self.url_counts[category]}\n\n")
self._write_markdown_schema(f, schema, level=0)
f.write("\n---\n\n")
print(f"Markdown summary saved to {output_path}")
def export_csv_summary(self, output_path):
"""
Generates a CSV summary of the flattened schema.
"""
import csv
with open(output_path, 'w', encoding='utf-8', newline='') as f:
writer = csv.writer(f)
writer.writerow(["Category", "Path", "Types", "Examples"])
for category, schema in sorted(self.schemas.items()):
self._write_csv_schema(writer, category, schema, path="")
print(f"CSV summary saved to {output_path}")
def _write_csv_schema(self, writer, category, schema, path):
if schema is None:
return
current_types = list(sorted(schema["types"]))
type_str = ", ".join(map(str, current_types))
# If it's a leaf or has no properties/items
is_leaf = "properties" not in schema and "items" not in schema
if is_leaf:
examples = list(schema.get("examples", []))
ex_str = "; ".join(examples[:3]) if examples else ""
writer.writerow([category, path, type_str, ex_str])
if "properties" in schema:
for k, v in schema["properties"].items():
new_path = f"{path}.{k}" if path else k
self._write_csv_schema(writer, category, v, new_path)
if "items" in schema:
new_path = f"{path}[]"
self._write_csv_schema(writer, category, schema["items"], new_path)
def _write_markdown_schema(self, f, schema, level=0):
if schema is None:
return
indent = " " * level
types = schema["types"]
type_str = ", ".join([str(t) for t in types])
# If it's a leaf (no props, no items)
if "properties" not in schema and "items" not in schema:
# Show examples
examples = schema.get("examples", [])
ex_str = f" (e.g., {', '.join(list(examples)[:3])})" if examples else ""
return # We handle leaf printing in the parent loop for keys, or here if it's a root/list item
if "properties" in schema:
for k, v in schema["properties"].items():
v_types = ", ".join(list(sorted(v["types"])))
v_ex = list(v.get("examples", []))
v_ex_str = f", e.g. {v_ex[0]}" if v_ex and "dict" not in v["types"] and "list" not in v["types"] else ""
f.write(f"{indent}- **{k}** ({v_types}{v_ex_str})\n")
self._write_markdown_schema(f, v, level + 1)
if "items" in schema:
f.write(f"{indent}- *[Array Items]*\n")
self._write_markdown_schema(f, schema["items"], level + 1)