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"""
文生图工具模块
"""
from __future__ import annotations
# 标准库导入
from typing import Any, TYPE_CHECKING, Dict, cast
# 第三方库导入
from mcp.types import CallToolResult
# 项目内部导入 - 配置
from ...config import SeedreamConfig
from ...utils.logging import get_logger
# 项目内部导入 - 核心功能
from ..core.common import (
execute_generation_handler,
GenerationExecutionContext,
)
if TYPE_CHECKING:
from mcp.server.fastmcp import Context
from ...client import SeedreamClient
# 模块日志记录器
logger = get_logger(__name__)
async def handle_text_to_image(
arguments: Dict[str, Any],
config: SeedreamConfig,
ctx: "Context[Any, Any, Any] | None" = None,
) -> CallToolResult:
"""
处理文生图请求
根据用户提供的文本提示词生成图片,支持尺寸配置、水印添加、提示词优化及自动保存等功能。
调用 API 生成图片后,可选择性地将结果保存至本地并返回统一格式的响应。
Args:
arguments: 请求参数字典,包含以下键值:
- prompt (str): 生成图片的文本提示词
- optimize_prompt_options (dict, optional): 提示词优化选项配置
- size (str, optional): 图片尺寸规格
- watermark (bool, optional): 是否添加水印
- response_format (str, optional): 响应格式,"url" 或 "b64_json",默认为 "url"
- stream (bool, optional): 是否启用流式输出,默认为 False
- request_count (int, optional): 并行请求次数,默认 1,范围 1-4
- parallelism (int, optional): 并行度上限,默认 min(request_count, 4),范围 1-4
- auto_save (bool, optional): 是否自动保存生成的图片
- save_path (str, optional): 自定义图片保存路径
- custom_name (str, optional): 自定义文件名前缀
Returns:
CallToolResult: MCP 标准工具结果。
- content: 面向模型的文本摘要
- structuredContent: 结构化结果数据
- isError: 是否为错误结果
"""
async def _execute(
client: "SeedreamClient", context: GenerationExecutionContext
) -> Dict[str, Any]:
result = await client.text_to_image(
prompt=context.prompt,
optimize_prompt_options=context.optimize_prompt_options,
size=context.size,
watermark=context.watermark,
response_format=context.response_format,
stream=context.stream,
)
return cast(Dict[str, Any], result)
return await execute_generation_handler(
arguments=arguments,
config=config,
module_logger=logger,
tool_name="text_to_image",
completion_title="文生图任务完成",
failure_prefix="文生图生成",
guidance="请检查提示词长度、尺寸与模型兼容性,确认 API Key 和网络可用后重试。",
start_log_message=(
"文生图开始: prompt_len={}, size={}, stream={}, request_count={}, parallelism={}"
),
start_log_values_builder=lambda ctx: (
len(ctx.prompt or ""),
ctx.size,
ctx.stream,
ctx.request_count,
ctx.parallelism,
),
request_executor=_execute,
ctx=ctx,
)