dify/api/core/variables/segments.py

158 lines
3.5 KiB
Python

import json
import sys
from collections.abc import Mapping, Sequence
from typing import Any
from pydantic import BaseModel, ConfigDict, field_validator
from core.file import File
from .types import SegmentType
class Segment(BaseModel):
model_config = ConfigDict(frozen=True)
value_type: SegmentType
value: Any
@field_validator("value_type")
@classmethod
def validate_value_type(cls, value):
"""
This validator checks if the provided value is equal to the default value of the 'value_type' field.
If the value is different, a ValueError is raised.
"""
if value != cls.model_fields["value_type"].default:
raise ValueError("Cannot modify 'value_type'")
return value
@property
def text(self) -> str:
return str(self.value)
@property
def log(self) -> str:
return str(self.value)
@property
def markdown(self) -> str:
return str(self.value)
@property
def size(self) -> int:
"""
Return the size of the value in bytes.
"""
return sys.getsizeof(self.value)
def to_object(self) -> Any:
return self.value
class NoneSegment(Segment):
value_type: SegmentType = SegmentType.NONE
value: None = None
@property
def text(self) -> str:
return ""
@property
def log(self) -> str:
return ""
@property
def markdown(self) -> str:
return ""
class StringSegment(Segment):
value_type: SegmentType = SegmentType.STRING
value: str
class FloatSegment(Segment):
value_type: SegmentType = SegmentType.NUMBER
value: float
class IntegerSegment(Segment):
value_type: SegmentType = SegmentType.NUMBER
value: int
class ObjectSegment(Segment):
value_type: SegmentType = SegmentType.OBJECT
value: Mapping[str, Any]
@property
def text(self) -> str:
return json.dumps(self.model_dump()["value"], ensure_ascii=False)
@property
def log(self) -> str:
return json.dumps(self.model_dump()["value"], ensure_ascii=False, indent=2)
@property
def markdown(self) -> str:
return json.dumps(self.model_dump()["value"], ensure_ascii=False, indent=2)
class ArraySegment(Segment):
@property
def markdown(self) -> str:
items = []
for item in self.value:
items.append(str(item))
return "\n".join(items)
class FileSegment(Segment):
value_type: SegmentType = SegmentType.FILE
value: File
@property
def markdown(self) -> str:
return self.value.markdown
@property
def log(self) -> str:
return str(self.value)
@property
def text(self) -> str:
return str(self.value)
class ArrayAnySegment(ArraySegment):
value_type: SegmentType = SegmentType.ARRAY_ANY
value: Sequence[Any]
class ArrayStringSegment(ArraySegment):
value_type: SegmentType = SegmentType.ARRAY_STRING
value: Sequence[str]
class ArrayNumberSegment(ArraySegment):
value_type: SegmentType = SegmentType.ARRAY_NUMBER
value: Sequence[float | int]
class ArrayObjectSegment(ArraySegment):
value_type: SegmentType = SegmentType.ARRAY_OBJECT
value: Sequence[Mapping[str, Any]]
class ArrayFileSegment(ArraySegment):
value_type: SegmentType = SegmentType.ARRAY_FILE
value: Sequence[File]
@property
def markdown(self) -> str:
items = []
for item in self.value:
items.append(item.markdown)
return "\n".join(items)