package vip.mate.channel.web; import io.swagger.v3.oas.annotations.Operation; import io.swagger.v3.oas.annotations.tags.Tag; import com.fasterxml.jackson.databind.ObjectMapper; import lombok.RequiredArgsConstructor; import lombok.extern.slf4j.Slf4j; import org.springframework.core.io.FileSystemResource; import org.springframework.core.io.Resource; import org.springframework.http.HttpHeaders; import org.springframework.http.MediaType; import org.springframework.http.ResponseEntity; import org.springframework.security.core.Authentication; import org.springframework.web.bind.annotation.*; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; import org.springframework.context.ApplicationEventPublisher; import vip.mate.common.result.R; import vip.mate.agent.AgentService; import vip.mate.agent.model.AgentEntity; import vip.mate.approval.ApprovalService; import vip.mate.approval.PendingApproval; import vip.mate.memory.event.ConversationCompletedEvent; import vip.mate.workspace.conversation.ConversationService; import vip.mate.workspace.conversation.model.MessageContentPart; import java.net.URLEncoder; import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.io.IOException; import reactor.core.Disposable; import java.util.ArrayList; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.atomic.AtomicBoolean; /** * Web 渠道聊天接口 * 提供 SSE 流式对话和同步对话能力 * * @author MateClaw Team */ @Tag(name = "Web聊天") @Slf4j @RestController @RequestMapping("/api/v1/chat") @RequiredArgsConstructor public class ChatController { private final AgentService agentService; private final ConversationService conversationService; private final ApprovalService approvalService; private final ChatStreamTracker streamTracker; private final ObjectMapper objectMapper; private final ApplicationEventPublisher eventPublisher; private final Path uploadRoot = Paths.get("data", "chat-uploads"); // 使用虚拟线程池处理 SSE（Java 17+ 兼容，Java 21 可用 Executors.newVirtualThreadPerTaskExecutor()） private final ExecutorService sseExecutor = Executors.newCachedThreadPool(); /** * SSE 流式对话（支持断线重连） *

* 正常请求：保存用户消息，启动 Flux 生产者，通过 StreamTracker 广播事件。 * 重连请求（reconnect=true）：附着到仍在运行的流，回放已缓冲事件后接收实时增量。 */ @Operation(summary = "结构化 SSE 流式对话（支持重连）") @PostMapping(value = "/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE) public SseEmitter chatStream( @RequestBody ChatStreamRequest request, @RequestHeader(value = "X-Workspace-Id", required = false) Long workspaceId, Authentication auth) { String conversationId = request.getConversationId() != null ? request.getConversationId() : "default"; // SSE 超时设为 10 分钟，覆盖 servlet 默认的 30s，避免长回答被中断 SseEmitter emitter = new SseEmitter(10 * 60 * 1000L); // ---- 分支 A：断线重连 ---- if (Boolean.TRUE.equals(request.getReconnect())) { String reconnectUser = auth != null ? auth.getName() : "anonymous"; log.info("SSE reconnect: conversationId={}, user={}", conversationId, reconnectUser); // 校验会话归属 if (!conversationService.isConversationOwner(conversationId, reconnectUser)) { try { sendEvent(emitter, "error", Map.of("message", "无权访问该会话")); } catch (IOException e) { log.warn("SSE reconnect auth error send failed: {}", e.getMessage()); } emitter.complete(); return emitter; } registerEmitterCallbacks(emitter, conversationId); boolean attached = streamTracker.attach(conversationId, emitter); if (!attached) { // 没有活跃的流（已完成或服务器重启后丢失），通知前端直接结束 try { sendEvent(emitter, "done", Map.of("status", "completed")); } catch (IOException e) { log.warn("SSE reconnect done send error: {}", e.getMessage()); } emitter.complete(); } return emitter; } // ---- 分支 B：正常请求 ---- Long agentId = request.getAgentId(); String message = request.getMessage() != null ? request.getMessage() : ""; if (auth == null) { try { sendEvent(emitter, "error", Map.of("message", "未登录，请先登录")); } catch (IOException e) { log.warn("SSE auth error send failed: {}", e.getMessage()); } emitter.complete(); return emitter; } String username = auth.getName(); log.info("SSE chat: agentId={}, conversationId={}, user={}", agentId, conversationId, username); // ---- Workspace 边界校验：确保 agent 属于当前 workspace ---- if (agentId != null) { AgentEntity agent = agentService.getAgent(agentId); if (agent != null && agent.getWorkspaceId() != null) { long wsId = workspaceId != null ? workspaceId : 1L; if (!agent.getWorkspaceId().equals(wsId)) { log.warn("Chat workspace mismatch: agent {} belongs to workspace {}, request workspace {}", agentId, agent.getWorkspaceId(), wsId); try { sendEvent(emitter, "error", Map.of("message", "Agent 不属于当前工作区")); sendEvent(emitter, "done", Map.of("status", "completed")); } catch (IOException e) { log.warn("SSE workspace error send failed: {}", e.getMessage()); } emitter.complete(); return emitter; } } } // ---- 审批命令拦截：/approve、/deny 走 SSE 流式 replay ---- String normalizedMsg = message.trim().toLowerCase(); boolean isApprovalCommand = "/approve".equals(normalizedMsg) || "approve".equals(normalizedMsg); boolean isDenyCommand = "/deny".equals(normalizedMsg) || "deny".equals(normalizedMsg); if (isApprovalCommand || isDenyCommand) { PendingApproval pending = approvalService.findPendingByConversation(conversationId); if (pending == null) { try { sendEvent(emitter, "error", Map.of("message", "当前没有待审批的工具调用")); sendEvent(emitter, "done", Map.of("status", "completed")); } catch (IOException e) { /* ignore */ } emitter.complete(); return emitter; } // deny: 解决并清理 DB 残留 if (isDenyCommand) { approvalService.resolve(pending.getPendingId(), username, "denied"); conversationService.removeApprovalPlaceholders(conversationId); log.info("[Approval-Stream] User {} denied pending {} for conversation {}", username, pending.getPendingId(), conversationId); } // approve: 原子 resolveAndConsume（消除 resolve/consume race condition） PendingApproval consumed = null; if (isApprovalCommand) { consumed = approvalService.resolveAndConsume(pending.getPendingId(), username); if (consumed == null) { try { sendEvent(emitter, "error", Map.of("message", "审批记录已过期或已被处理")); sendEvent(emitter, "done", Map.of("status", "completed")); } catch (IOException e2) { /* ignore */ } emitter.complete(); return emitter; } // 清理 DB 中残留的审批占位消息（对齐 IM 渠道 replayApprovedToolCall） conversationService.removeApprovalPlaceholders(conversationId); log.info("[Approval-Stream] User {} approved pending {} for conversation {}", username, consumed.getPendingId(), conversationId); } final PendingApproval finalConsumed = consumed; final String decision = isApprovalCommand ? "approved" : "denied"; streamTracker.register(conversationId); registerEmitterCallbacks(emitter, conversationId); streamTracker.attach(conversationId, emitter); AtomicBoolean approvalEmitterDone = new AtomicBoolean(false); sseExecutor.execute(() -> { StreamAccumulator accumulator = new StreamAccumulator(); AtomicBoolean finalized = new AtomicBoolean(false); try { // 广播 approval_resolved 事件 broadcastEvent(conversationId, "tool_approval_resolved", Map.of( "pendingId", pending.getPendingId(), "decision", decision, "toolName", pending.getToolName(), "timestamp", System.currentTimeMillis() )); if ("denied".equals(decision)) { String denyMsg = "用户拒绝执行工具 " + pending.getToolName(); conversationService.saveMessage(conversationId, "assistant", denyMsg); broadcastEvent(conversationId, "message_start", Map.of("role", "assistant")); broadcastEvent(conversationId, "content_delta", Map.of("delta", denyMsg)); broadcastEvent(conversationId, "message_complete", Map.of("status", "completed")); broadcastEvent(conversationId, "done", Map.of("status", "completed")); // deny 是正常 turn 终结，用户可能在 awaiting_approval 阶段排了消息 ChatStreamTracker.CompletionResult denyCr = streamTracker.completeAndConsumeIfLast(conversationId); if (denyCr.allDone() && denyCr.queuedInput() != null) { startQueuedMessage(conversationId, emitter, approvalEmitterDone, denyCr.queuedInput(), username); } else { completeEmitterQuietly(emitter, approvalEmitterDone); } return; } // approved: 使用已原子消费的记录触发 replay 流 if (finalConsumed == null) { broadcastEvent(conversationId, "error", Map.of("message", "审批记录已被消费")); broadcastEvent(conversationId, "done", Map.of("status", "completed")); // 审批记录被另一个请求消费，但用户可能在等待期间排了消息 ChatStreamTracker.CompletionResult consumedNullCr = streamTracker.completeAndConsumeIfLast(conversationId); if (consumedNullCr.allDone() && consumedNullCr.queuedInput() != null) { startQueuedMessage(conversationId, emitter, approvalEmitterDone, consumedNullCr.queuedInput(), username); } else { completeEmitterQuietly(emitter, approvalEmitterDone); } return; } Long replayAgentId = finalConsumed.getAgentId() != null ? Long.parseLong(finalConsumed.getAgentId()) : agentId; broadcastEvent(conversationId, "message_start", Map.of("role", "assistant")); // 不含工具名的中性 prompt（对齐 IM 渠道，防止 fallthrough 时误导 LLM） String replayPrompt = "继续执行已批准的工具调用。"; streamTracker.incrementFlux(conversationId); Disposable disposable = agentService.chatWithReplayStream( replayAgentId, replayPrompt, conversationId, finalConsumed.getToolCallPayload(), username) .doOnNext(delta -> { if (approvalEmitterDone.get()) return; try { accumulator.accept(delta, conversationId); } catch (Exception e) { log.warn("SSE replay broadcast error: {}", e.getMessage()); } }) .doOnComplete(() -> { if (!finalized.compareAndSet(false, true)) return; try { List parts = accumulator.toAssistantParts(); String text = accumulator.getContent(); if (!text.isBlank() || !parts.isEmpty()) { conversationService.saveMessage(conversationId, "assistant", text, parts, "completed", accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); // 包含 toolCalls 元数据 } broadcastEvent(conversationId, "message_complete", Map.of( "status", "completed", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !text.isBlank() )); int msgCount = conversationService.getMessageCount(conversationId); broadcastEvent(conversationId, "done", Map.of( "conversationId", conversationId, "status", "completed", "persisted", true, "messageCount", msgCount )); } catch (Exception e) { log.warn("SSE replay complete error: {}", e.getMessage()); } finally { ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); if (cr.allDone()) { if (cr.queuedInput() != null) { startQueuedMessage(conversationId, emitter, approvalEmitterDone, cr.queuedInput(), username); } else { conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, approvalEmitterDone); } } } }) .doOnError(e -> { if (!finalized.compareAndSet(false, true)) return; boolean isUserStop = e instanceof java.util.concurrent.CancellationException || (e.getCause() instanceof java.util.concurrent.CancellationException); ChatStreamTracker.InterruptType replayInterruptType = streamTracker.getInterruptType(conversationId); boolean replayIsFollowup = replayInterruptType == ChatStreamTracker.InterruptType.USER_INTERRUPT_WITH_FOLLOWUP; String errStatus = !isUserStop ? "failed" : replayIsFollowup ? "interrupted" : "stopped"; if (replayIsFollowup) { log.info("SSE replay stream interrupted for follow-up: conversationId={}", conversationId); } else if (isUserStop) { log.info("SSE replay stream stopped by user: conversationId={}", conversationId); } else { log.error("SSE replay error: {}", e.getMessage()); } try { List replayParts = accumulator.toAssistantParts(); String replayText = accumulator.getContent(); if (!replayText.isBlank() || !replayParts.isEmpty()) { String savedText = replayText.isBlank() && isUserStop ? (replayIsFollowup ? "[已中断]" : "[已停止生成]") : replayText; conversationService.saveMessage(conversationId, "assistant", savedText, replayParts, errStatus, accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); } else if (isUserStop) { conversationService.saveMessage(conversationId, "assistant", replayIsFollowup ? "[已中断]" : "[已停止生成]", null, errStatus); } if (replayIsFollowup) { broadcastEvent(conversationId, "message_complete", Map.of( "status", "interrupted", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !replayText.isBlank() )); broadcastEvent(conversationId, "turn_interrupted", Map.of( "conversationId", conversationId, "hasQueuedMessage", streamTracker.hasQueuedMessage(conversationId) )); } else if (isUserStop) { broadcastEvent(conversationId, "message_complete", Map.of( "status", "stopped", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !replayText.isBlank() )); int stoppedMsgCount = conversationService.getMessageCount(conversationId); broadcastEvent(conversationId, "done", Map.of( "conversationId", conversationId, "status", "stopped", "persisted", true, "messageCount", stoppedMsgCount )); } else { broadcastEvent(conversationId, "error", Map.of("message", e.getMessage() != null ? e.getMessage() : "replay error")); } } catch (Exception ex) { log.warn("SSE replay error finalize failed: {}", ex.getMessage()); } streamTracker.clearInterruptState(conversationId); ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); if (cr.allDone()) { if (cr.queuedInput() != null) { startQueuedMessage(conversationId, emitter, approvalEmitterDone, cr.queuedInput(), username); } else { conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, approvalEmitterDone); } } }) .subscribe( chunk -> { }, err -> log.debug("SSE replay subscription terminated: {}", err.getMessage()), () -> log.debug("SSE replay subscription completed: conversationId={}", conversationId)); streamTracker.setDisposable(conversationId, disposable); } catch (Exception e) { log.error("SSE approval replay setup error: {}", e.getMessage()); streamTracker.complete(conversationId); completeEmitterQuietly(emitter, approvalEmitterDone); } }); return emitter; } // ---- 正常请求：注册流状态并附着首个订阅者 ---- streamTracker.register(conversationId); registerEmitterCallbacks(emitter, conversationId); streamTracker.attach(conversationId, emitter); // 标记 emitter 是否已结束，防止 Flux 回调再次写入已关闭的 emitter AtomicBoolean emitterDone = new AtomicBoolean(false); sseExecutor.execute(() -> { StreamAccumulator accumulator = new StreamAccumulator(); AtomicBoolean finalized = new AtomicBoolean(false); try { conversationService.getOrCreateConversation(conversationId, agentId, username, workspaceId); List requestParts = normalizeRequestParts(request); String promptText = buildPromptText(message, requestParts); conversationService.saveMessage(conversationId, "user", message, requestParts); conversationService.updateStreamStatus(conversationId, "running"); broadcastEvent(conversationId, "session", Map.of( "conversationId", conversationId, "agentId", agentId )); broadcastEvent(conversationId, "message_start", Map.of( "role", "assistant" )); streamTracker.incrementFlux(conversationId); Disposable disposable = agentService.chatStructuredStream(agentId, promptText, conversationId, username) .doOnNext(delta -> { if (emitterDone.get()) return; try { accumulator.accept(delta, conversationId); } catch (Exception e) { log.warn("SSE broadcast error: {}", e.getMessage()); } }) .doOnComplete(() -> { if (!finalized.compareAndSet(false, true)) return; // 区分三种完成语义： // 1. 正常完成（stopRequested=false）→ completed // 2. 用户主动停止 → stopped // 3. 用户中断后续跑（interrupt-with-followup）→ interrupted boolean wasStopped = streamTracker.isStopRequested(conversationId); ChatStreamTracker.InterruptType interruptType = streamTracker.getInterruptType(conversationId); boolean isInterruptFollowup = interruptType == ChatStreamTracker.InterruptType.USER_INTERRUPT_WITH_FOLLOWUP; String persistStatus; if (accumulator.isAwaitingApproval()) { persistStatus = "awaiting_approval"; } else if (!wasStopped) { persistStatus = "completed"; } else { persistStatus = isInterruptFollowup ? "interrupted" : "stopped"; } try { List assistantParts = accumulator.toAssistantParts(); String assistantText = accumulator.getContent(); if (!assistantText.isBlank() || !assistantParts.isEmpty()) { String savedText = assistantText.isBlank() && wasStopped ? (isInterruptFollowup ? "[已中断]" : "[已停止生成]") : assistantText; conversationService.saveMessage(conversationId, "assistant", savedText, assistantParts, persistStatus, accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); } else if (wasStopped) { conversationService.saveMessage(conversationId, "assistant", isInterruptFollowup ? "[已中断]" : "[已停止生成]", null, persistStatus); } // 发布对话完成事件（仅正常完成时，停止/中断不触发记忆提取） if (!wasStopped) { try { int msgCount = conversationService.getMessageCount(conversationId); eventPublisher.publishEvent(new ConversationCompletedEvent( agentId, conversationId, message, assistantText, msgCount, "web")); } catch (Exception ex) { log.debug("[Memory] Failed to publish ConversationCompletedEvent: {}", ex.getMessage()); } } if (isInterruptFollowup) { broadcastEvent(conversationId, "message_complete", Map.of( "status", "interrupted", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !assistantText.isBlank() )); broadcastEvent(conversationId, "turn_interrupted", Map.of( "conversationId", conversationId, "hasQueuedMessage", streamTracker.hasQueuedMessage(conversationId) )); } else { broadcastEvent(conversationId, "message_complete", Map.of( "status", persistStatus, "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !assistantText.isBlank() )); int msgCount = conversationService.getMessageCount(conversationId); broadcastEvent(conversationId, "done", Map.of( "conversationId", conversationId, "status", persistStatus, "promptTokens", accumulator.getPromptTokens(), "completionTokens", accumulator.getCompletionTokens(), "persisted", true, "messageCount", msgCount )); } } catch (Exception e) { log.warn("SSE complete error: {}", e.getMessage()); } finally { streamTracker.clearInterruptState(conversationId); ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); if (cr.allDone()) { if (cr.queuedInput() != null && (isInterruptFollowup || !wasStopped)) { startQueuedMessage(conversationId, emitter, emitterDone, cr.queuedInput(), username); } else { conversationService.updateStreamStatus(conversationId, "idle"); // 延迟关闭 emitter，确保最后的事件都已发送 sseExecutor.execute(() -> { try { Thread.sleep(100); } catch (InterruptedException ignored) {} completeEmitterQuietly(emitter, emitterDone); }); } } else { log.info("Original stream completed but replay still active, " + "keeping SSE emitter alive: conversationId={}", conversationId); } } }) .doOnCancel(() -> { boolean wasFirst = finalized.compareAndSet(false, true); log.info("SSE doOnCancel fired: conversationId={}, wasFirst={}", conversationId, wasFirst); if (!wasFirst) return; // 区分用户主动停止和 interrupt-with-followup ChatStreamTracker.InterruptType interruptType = streamTracker.getInterruptType(conversationId); boolean isInterruptFollowup = interruptType == ChatStreamTracker.InterruptType.USER_INTERRUPT_WITH_FOLLOWUP; String status = isInterruptFollowup ? "interrupted" : "stopped"; log.info("SSE stream cancelled ({}): conversationId={}", status, conversationId); try { List assistantParts = accumulator.toAssistantParts(); String assistantText = accumulator.getContent(); if (!assistantText.isBlank() || !assistantParts.isEmpty()) { String savedText = assistantText.isBlank() ? (isInterruptFollowup ? "[已中断]" : "[已停止生成]") : assistantText; conversationService.saveMessage(conversationId, "assistant", savedText, assistantParts, status, accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); } else { conversationService.saveMessage(conversationId, "assistant", isInterruptFollowup ? "[已中断]" : "[已停止生成]", null, status); } if (isInterruptFollowup) { broadcastEvent(conversationId, "message_complete", Map.of( "status", "interrupted", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !assistantText.isBlank() )); broadcastEvent(conversationId, "turn_interrupted", Map.of( "conversationId", conversationId, "hasQueuedMessage", streamTracker.hasQueuedMessage(conversationId) )); } else { broadcastEvent(conversationId, "message_complete", Map.of( "status", "stopped", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !assistantText.isBlank() )); int stoppedMsgCount = conversationService.getMessageCount(conversationId); broadcastEvent(conversationId, "done", Map.of( "conversationId", conversationId, "status", "stopped", "persisted", true, "messageCount", stoppedMsgCount )); } } catch (Exception e) { log.warn("SSE stop finalize error: {}", e.getMessage()); } finally { streamTracker.clearInterruptState(conversationId); ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); if (cr.allDone()) { if (cr.queuedInput() != null) { // 无论中断类型，都消费排队消息（修复 Disposable 不可用时队列被丢弃的 bug） startQueuedMessage(conversationId, emitter, emitterDone, cr.queuedInput(), username); } else { conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, emitterDone); } } } }) .doOnError(e -> { boolean wasFirst = finalized.compareAndSet(false, true); if (!wasFirst) { log.info("SSE doOnError skipped (finalized by doOnCancel): conversationId={}", conversationId); return; } // CancellationException = 用户主动停止或中断续跑 boolean isUserStop = e instanceof java.util.concurrent.CancellationException || (e.getCause() instanceof java.util.concurrent.CancellationException); ChatStreamTracker.InterruptType interruptType = streamTracker.getInterruptType(conversationId); boolean isInterruptFollowup = interruptType == ChatStreamTracker.InterruptType.USER_INTERRUPT_WITH_FOLLOWUP; // 三态：interrupted > stopped > failed String status = !isUserStop ? "failed" : isInterruptFollowup ? "interrupted" : "stopped"; if (isInterruptFollowup) { log.info("SSE stream interrupted for follow-up (CancellationException): conversationId={}", conversationId); } else if (isUserStop) { log.info("SSE stream stopped by user (CancellationException): conversationId={}", conversationId); } else if (isClientDisconnect(e)) { log.warn("SSE client disconnected: conversationId={}, cause={}", conversationId, e.getMessage()); } else { log.error("SSE stream error: conversationId={}, cause={}", conversationId, e.getMessage()); } try { List assistantParts = accumulator.toAssistantParts(); String assistantText = accumulator.getContent(); log.info("SSE doOnError saving: conversationId={}, status={}, textLen={}, partsCount={}", conversationId, status, assistantText.length(), assistantParts.size()); String errorMsg = e.getMessage() != null ? e.getMessage() : "unknown error"; if (!assistantText.isBlank() || !assistantParts.isEmpty()) { String savedText = assistantText.isBlank() && isUserStop ? (isInterruptFollowup ? "[已中断]" : "[已停止生成]") : assistantText; conversationService.saveMessage(conversationId, "assistant", savedText, assistantParts, status, accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); } else if (isUserStop) { conversationService.saveMessage(conversationId, "assistant", isInterruptFollowup ? "[已中断]" : "[已停止生成]", null, status); } else { conversationService.saveMessage(conversationId, "assistant", "[错误] " + errorMsg, null, "failed"); } if (isInterruptFollowup) { broadcastEvent(conversationId, "message_complete", Map.of( "status", "interrupted", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !assistantText.isBlank() )); broadcastEvent(conversationId, "turn_interrupted", Map.of( "conversationId", conversationId, "hasQueuedMessage", streamTracker.hasQueuedMessage(conversationId) )); } else if (isUserStop) { broadcastEvent(conversationId, "message_complete", Map.of( "status", "stopped", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !assistantText.isBlank() )); int stoppedMsgCount = conversationService.getMessageCount(conversationId); broadcastEvent(conversationId, "done", Map.of( "conversationId", conversationId, "status", "stopped", "persisted", true, "messageCount", stoppedMsgCount )); } else { broadcastEvent(conversationId, "error", Map.of( "message", errorMsg, "conversationId", conversationId )); } } catch (Exception ioException) { log.error("SSE doOnError save/broadcast failed: conversationId={}, error={}", conversationId, ioException.getMessage(), ioException); } streamTracker.clearInterruptState(conversationId); ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); log.info("SSE doOnError cleanup: conversationId={}, allDone={}, isInterruptFollowup={}, hasQueued={}", conversationId, cr.allDone(), isInterruptFollowup, cr.queuedInput() != null); if (cr.allDone()) { // 修复：非用户主动停止时也消费排队消息 // isUserStop && !isInterruptFollowup = 用户点了 Stop，不应续跑 boolean userExplicitStop = isUserStop && !isInterruptFollowup; if (cr.queuedInput() != null && !userExplicitStop) { startQueuedMessage(conversationId, emitter, emitterDone, cr.queuedInput(), username); } else { // 即使不续跑，如果有排队消息也要持久化用户消息（防丢失，幂等） if (cr.queuedInput() != null && !cr.queuedInput().persisted()) { conversationService.saveMessage(conversationId, "user", cr.queuedInput().message(), null, "queued"); } conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, emitterDone); } } }) .subscribe( chunk -> { }, error -> log.debug("SSE stream subscription terminated with error: {}", error.getMessage()), () -> log.debug("SSE stream subscription completed: conversationId={}", conversationId)); // 将 Disposable 注册到 StreamTracker，以便 stop 端点可以取消它 streamTracker.setDisposable(conversationId, disposable); } catch (Exception e) { log.error("SSE setup error: {}", e.getMessage()); try { broadcastEvent(conversationId, "error", Map.of("message", e.getMessage() != null ? e.getMessage() : "unknown error")); } catch (Exception ioException) { log.warn("SSE setup failure event broadcast error: {}", ioException.getMessage()); } streamTracker.complete(conversationId); conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, emitterDone); } }); return emitter; } /** * 停止指定会话的流式生成。 * 取消 Flux 订阅（底层 HTTP 连接也会随之关闭），已生成的部分内容以 stopped 状态入库。 */ @Operation(summary = "停止流式生成") @PostMapping("/{conversationId}/stop") public R> stopStream(@PathVariable String conversationId, Authentication auth) { String username = auth != null ? auth.getName() : "anonymous"; // 权限校验：已认证用户需验证会话归属，匿名用户（permitAll）直接放行 if (auth != null && !conversationService.isConversationOwner(conversationId, username)) { return R.fail("无权操作该会话"); } boolean stopped = streamTracker.requestStop(conversationId); log.info("Stop requested: conversationId={}, user={}, stopped={}", conversationId, username, stopped); return R.ok(Map.of("stopped", stopped)); } /** * 中断当前流并排队一条后续消息。 *

* 与 stop 的区别：interrupt 会在当前 turn 安全结束后自动启动排队消息。 * 如果当前阶段不可中断（awaiting_approval），消息会被排队但不打断当前执行。 */ @Operation(summary = "中断并排队后续消息") @PostMapping("/{conversationId}/interrupt") public R> interruptStream( @PathVariable String conversationId, @RequestBody InterruptRequest request, Authentication auth) { String username = auth != null ? auth.getName() : "anonymous"; if (auth != null && !conversationService.isConversationOwner(conversationId, username)) { return R.fail("无权操作该会话"); } if (!streamTracker.isRunning(conversationId)) { return R.ok(Map.of("interrupted", false, "reason", "no_active_stream")); } String message = request.getMessage(); Long agentId = request.getAgentId(); List contentParts = request.getContentParts(); // 判断当前阶段是否可中断 // awaiting_approval 阶段不直接中断，只排队 boolean isAwaitingApproval = approvalService.findPendingByConversation(conversationId) != null; if (isAwaitingApproval) { // 不可中断：排队但不打断。先持久化（含 contentParts）再入队（persisted=true） conversationService.saveMessage(conversationId, "user", message, contentParts, "queued"); boolean queued = streamTracker.enqueueMessage(conversationId, message, agentId, true); log.info("Interrupt requested during approval, message queued: conversationId={}, user={}, queueSize={}", conversationId, username, streamTracker.getQueueSize(conversationId)); return R.ok(Map.of( "interrupted", false, "queued", queued, "reason", "awaiting_approval" )); } // 可中断：先持久化（含 contentParts）再打断并入队（persisted=true） conversationService.saveMessage(conversationId, "user", message, contentParts, "queued"); boolean interrupted = streamTracker.requestInterrupt(conversationId, message, agentId, true); log.info("Interrupt requested: conversationId={}, user={}, interrupted={}, queueSize={}", conversationId, username, interrupted, streamTracker.getQueueSize(conversationId)); return R.ok(Map.of( "interrupted", interrupted, "queued", true, "queueSize", streamTracker.getQueueSize(conversationId), "reason", interrupted ? "interrupted" : "queued" )); } @lombok.Data public static class InterruptRequest { private String message; private Long agentId; /** 结构化内容片段（含图片等附件），排队消息带附件时由前端传入 */ private List contentParts; } /** * 同步对话 */ @Operation(summary = "同步对话") @PostMapping public R chat( @RequestParam Long agentId, @RequestBody ChatRequest request, @RequestHeader(value = "X-Workspace-Id", required = false) Long workspaceId, Authentication auth) { String username = auth != null ? auth.getName() : null; if (username == null) { return R.fail("未登录，请先登录"); } conversationService.getOrCreateConversation(request.getConversationId(), agentId, username, workspaceId); conversationService.saveMessage(request.getConversationId(), "user", request.getMessage(), request.getContentParts()); String promptText = buildPromptText(request.getMessage(), request.getContentParts()); String response = agentService.chat(agentId, promptText, request.getConversationId()); conversationService.saveMessage(request.getConversationId(), "assistant", response); // 发布对话完成事件 try { int msgCount = conversationService.getMessageCount(request.getConversationId()); eventPublisher.publishEvent(new ConversationCompletedEvent( agentId, request.getConversationId(), request.getMessage(), response, msgCount, "web")); } catch (Exception ex) { log.debug("[Memory] Failed to publish ConversationCompletedEvent: {}", ex.getMessage()); } return R.ok(response); } @Operation(summary = "上传聊天附件") @PostMapping(value = "/upload", consumes = MediaType.MULTIPART_FORM_DATA_VALUE) public R upload( @RequestParam String conversationId, @RequestPart("file") MultipartFile file, Authentication auth) throws IOException { String username = auth != null ? auth.getName() : "anonymous"; // 校验会话归属（会话可能尚未创建，此时允许上传——后续 stream/chat 会创建并绑定用户） if (conversationService.conversationExists(conversationId) && !conversationService.isConversationOwner(conversationId, username)) { return R.fail("无权操作该会话"); } if (file.isEmpty()) { return R.fail("上传文件不能为空"); } String originalFilename = file.getOriginalFilename() != null ? file.getOriginalFilename() : "file"; String safeFilename = Path.of(originalFilename).getFileName().toString().replaceAll("[^a-zA-Z0-9._-]", "_"); String storedName = System.currentTimeMillis() + "_" + safeFilename; Path conversationDir = uploadRoot.resolve(conversationId); Files.createDirectories(conversationDir); Path target = conversationDir.resolve(storedName); file.transferTo(target); log.info("Chat attachment uploaded: conversationId={}, user={}, file={}", conversationId, username, target); ChatUploadResponse response = new ChatUploadResponse(); response.setConversationId(conversationId); response.setFileName(originalFilename); response.setStoredName(storedName); response.setUrl("/api/v1/chat/files/" + conversationId + "/" + storedName); // 使用相对路径，避免暴露服务端绝对路径 response.setPath(uploadRoot.resolve(conversationId).resolve(storedName).toString()); response.setSize(file.getSize()); response.setContentType(file.getContentType()); return R.ok(response); } @Operation(summary = "读取聊天附件") @GetMapping("/files/{conversationId}/{storedName:.+}") public ResponseEntity readUploadedFile( @PathVariable String conversationId, @PathVariable String storedName, Authentication auth) throws IOException { // 校验当前用户拥有该会话 String username = auth != null ? auth.getName() : "anonymous"; if (!conversationService.isConversationOwner(conversationId, username)) { return ResponseEntity.status(403).build(); } Path filePath = uploadRoot.resolve(conversationId).resolve(storedName).normalize(); if (!Files.exists(filePath) || !filePath.startsWith(uploadRoot.resolve(conversationId).normalize())) { return ResponseEntity.notFound().build(); } Resource resource = new FileSystemResource(filePath); String contentType = Files.probeContentType(filePath); // probeContentType 在部分平台不识别视频格式，通过扩展名 fallback if (contentType == null) { contentType = guessContentTypeByExtension(filePath.getFileName().toString()); } MediaType mediaType = MediaType.APPLICATION_OCTET_STREAM; if (contentType != null) { try { mediaType = MediaType.parseMediaType(contentType); } catch (Exception ignored) { } } String encodedFilename = URLEncoder.encode(filePath.getFileName().toString(), StandardCharsets.UTF_8) .replace("+", "%20"); return ResponseEntity.ok() .contentType(mediaType) .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename*=UTF-8''" + encodedFilename) .body(resource); } @lombok.Data public static class ChatRequest { private String message; private String conversationId = "default"; private List contentParts; } @lombok.Data public static class ChatUploadResponse { private String conversationId; private String fileName; private String storedName; private String url; private String path; private Long size; private String contentType; } @lombok.Data public static class ChatStreamRequest { private Long agentId; private String message; private String conversationId = "default"; private List contentParts; /** true 表示断线重连，不发送新消息，只附着到已有的流 */ private Boolean reconnect; } /** * 自动启动排队消息（interrupt-with-followup 或自然完成后的续跑逻辑）。 * 接受由 {@link ChatStreamTracker#completeAndConsumeIfLast} 预先消费的 QueuedInput 快照。 * 快照已脱离 RunState 生命周期，不受后续 complete/register 影响。 * 支持链式续跑：queued stream 自身完成时也通过 completeAndConsumeIfLast 检查并递归调用。 */ private void startQueuedMessage(String conversationId, SseEmitter emitter, AtomicBoolean emitterDone, ChatStreamTracker.QueuedInput preConsumedInput, String requesterId) { if (preConsumedInput == null) { conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, emitterDone); return; } // Rate Limit 防护：如果上一轮以 rate limit 错误结束，不立即续跑排队消息（必然再次 429）。 // 改为持久化用户消息 + 通知前端"稍后重试"，避免连锁 429 浪费配额。 String lastMessage = conversationService.getLastMessage(conversationId); if (lastMessage != null && (lastMessage.contains("频率过高") || lastMessage.contains("rate_limit") || lastMessage.contains("429") || lastMessage.contains("速率限制"))) { log.warn("Skipping queued message after rate limit error: conversationId={}, lastMessage={}", conversationId, lastMessage.substring(0, Math.min(50, lastMessage.length()))); // 持久化用户消息不丢失 if (preConsumedInput.message() != null && !preConsumedInput.message().isBlank() && !preConsumedInput.persisted()) { conversationService.saveMessage(conversationId, "user", preConsumedInput.message()); } broadcastEvent(conversationId, "warning", Map.of( "message", "上一轮请求触发了频率限制，排队消息已保存，请稍后重新发送")); broadcastEvent(conversationId, "done", Map.of("status", "rate_limited")); conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, emitterDone); return; } String queuedMessage = preConsumedInput.message(); Long agentId = preConsumedInput.agentId() != null ? preConsumedInput.agentId() : 1L; log.info("Starting queued message: conversationId={}, agentId={}, message={}", conversationId, agentId, queuedMessage.substring(0, Math.min(30, queuedMessage.length()))); // 持久化排队的用户消息（幂等：如果 /interrupt 已提前持久化则跳过） if (queuedMessage != null && !queuedMessage.isBlank() && !preConsumedInput.persisted()) { conversationService.saveMessage(conversationId, "user", queuedMessage); } // 广播 queued_input_started 事件 broadcastEvent(conversationId, "queued_input_started", Map.of( "conversationId", conversationId, "message", queuedMessage )); // 重新注册流状态 streamTracker.register(conversationId); streamTracker.attach(conversationId, emitter); // 启动新的流（复用现有 sseExecutor.execute 的逻辑模式） StreamAccumulator accumulator = new StreamAccumulator(); AtomicBoolean finalized = new AtomicBoolean(false); broadcastEvent(conversationId, "message_start", Map.of("role", "assistant")); streamTracker.incrementFlux(conversationId); Disposable disposable = agentService.chatStructuredStream(agentId, queuedMessage, conversationId, requesterId) .doOnNext(delta -> { if (emitterDone.get()) return; try { accumulator.accept(delta, conversationId); } catch (Exception e) { log.warn("SSE queued broadcast error: {}", e.getMessage()); } }) .doOnComplete(() -> { if (!finalized.compareAndSet(false, true)) return; try { List parts = accumulator.toAssistantParts(); String text = accumulator.getContent(); if (!text.isBlank() || !parts.isEmpty()) { conversationService.saveMessage(conversationId, "assistant", text, parts, "completed", accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); } broadcastEvent(conversationId, "message_complete", Map.of( "status", "completed", "hasThinking", !accumulator.getThinking().isBlank(), "hasContent", !text.isBlank() )); broadcastEvent(conversationId, "done", Map.of( "status", "completed", "promptTokens", accumulator.getPromptTokens(), "completionTokens", accumulator.getCompletionTokens() )); } catch (Exception e) { log.warn("SSE queued complete error: {}", e.getMessage()); } finally { ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); if (cr.allDone()) { if (cr.queuedInput() != null) { // 链式续跑：queued stream 期间又排了新消息 startQueuedMessage(conversationId, emitter, emitterDone, cr.queuedInput(), requesterId); } else { conversationService.updateStreamStatus(conversationId, "idle"); sseExecutor.execute(() -> { try { Thread.sleep(100); } catch (InterruptedException ignored) {} completeEmitterQuietly(emitter, emitterDone); }); } } } }) .doOnError(e -> { if (!finalized.compareAndSet(false, true)) return; log.error("SSE queued stream error: conversationId={}, cause={}", conversationId, e.getMessage()); // 持久化已累积的 assistant 消息（修复：原逻辑未保存导致回答丢失） try { List parts = accumulator.toAssistantParts(); String text = accumulator.getContent(); if (!text.isBlank() || !parts.isEmpty()) { conversationService.saveMessage(conversationId, "assistant", text, parts, "failed", accumulator.getPromptTokens(), accumulator.getCompletionTokens(), accumulator.getRuntimeModelName(), accumulator.getRuntimeProviderId(), accumulator.toMetadataJson()); } else { String errorMsg = e.getMessage() != null ? e.getMessage() : "queued stream error"; conversationService.saveMessage(conversationId, "assistant", "[错误] " + errorMsg, null, "failed"); } } catch (Exception saveEx) { log.error("SSE queued doOnError save failed: {}", saveEx.getMessage()); } broadcastEvent(conversationId, "error", Map.of( "message", e.getMessage() != null ? e.getMessage() : "queued stream error")); ChatStreamTracker.CompletionResult cr = streamTracker.completeAndConsumeIfLast(conversationId); if (cr.allDone()) { if (cr.queuedInput() != null) { startQueuedMessage(conversationId, emitter, emitterDone, cr.queuedInput(), requesterId); } else { conversationService.updateStreamStatus(conversationId, "idle"); completeEmitterQuietly(emitter, emitterDone); } } }) .subscribe(); streamTracker.setDisposable(conversationId, disposable); } private void sendEvent(SseEmitter emitter, String name, Object data) throws IOException { String payload; try { payload = objectMapper.writeValueAsString(data); } catch (Exception e) { payload = "{\"message\":\"serialization_error\"}"; } emitter.send(SseEmitter.event().name(name).data(payload)); } private void broadcastEvent(String conversationId, String name, Object data) { String payload; try { payload = objectMapper.writeValueAsString(data); } catch (Exception e) { payload = "{\"message\":\"serialization_error\"}"; } streamTracker.broadcast(conversationId, name, payload); } private List normalizeRequestParts(ChatStreamRequest request) { if (request.getContentParts() != null && !request.getContentParts().isEmpty()) { return request.getContentParts(); } if (request.getMessage() == null || request.getMessage().isBlank()) { return List.of(); } MessageContentPart textPart = new MessageContentPart(); textPart.setType("text"); textPart.setText(request.getMessage()); return List.of(textPart); } private String buildPromptText(String message, List parts) { if (parts == null || parts.isEmpty()) { return message != null ? message : ""; } StringBuilder builder = new StringBuilder(); for (MessageContentPart part : parts) { if (part == null || part.getType() == null) { continue; } switch (part.getType()) { case "text", "thinking" -> appendPromptLine(builder, part.getText()); case "file" -> appendPromptLine(builder, "附件: " + safe(part.getFileName()) + " (" + safe(part.getPath()) + ")"); case "image" -> appendPromptLine(builder, "图片附件: " + safe(part.getFileName()) + " (" + safe(part.getPath()) + ")"); case "video" -> appendPromptLine(builder, "视频附件: " + safe(part.getFileName()) + " (" + safe(part.getPath()) + ")"); default -> appendPromptLine(builder, part.getText()); } } return builder.toString().trim(); } private void appendPromptLine(StringBuilder builder, String text) { if (text == null || text.isBlank()) { return; } if (!builder.isEmpty()) { builder.append('\n'); } builder.append(text); } private String safe(String text) { return text == null ? "" : text; } private static final java.util.Map MEDIA_CONTENT_TYPES = java.util.Map.of( "mp4", "video/mp4", "webm", "video/webm", "mov", "video/quicktime", "avi", "video/x-msvideo", "mkv", "video/x-matroska", "mpeg", "video/mpeg", "mp3", "audio/mpeg", "wav", "audio/wav", "ogg", "audio/ogg" ); private static String guessContentTypeByExtension(String fileName) { if (fileName == null) return null; int dot = fileName.lastIndexOf('.'); if (dot < 0 || dot == fileName.length() - 1) return null; return MEDIA_CONTENT_TYPES.get(fileName.substring(dot + 1).toLowerCase()); } /** * 注册 SseEmitter 的完整生命周期回调 */ private void registerEmitterCallbacks(SseEmitter emitter, String conversationId) { emitter.onCompletion(() -> log.debug("SSE emitter completed: conversationId={}", conversationId)); emitter.onTimeout(() -> { log.debug("SSE emitter timeout: conversationId={}", conversationId); streamTracker.detach(conversationId, emitter); // 超时后显式 complete，防止 servlet 容器再抛 AsyncRequestTimeoutException emitter.complete(); }); emitter.onError(e -> { if (isClientDisconnect(e)) { log.debug("SSE client disconnected: conversationId={}, cause={}", conversationId, e.getMessage()); } else { log.warn("SSE emitter error: conversationId={}, cause={}", conversationId, e.getMessage()); } streamTracker.detach(conversationId, emitter); }); } /** * 安全地完成 emitter，防止重复调用和已关闭连接引发的异常 */ private void completeEmitterQuietly(SseEmitter emitter, AtomicBoolean emitterDone) { if (!emitterDone.compareAndSet(false, true)) return; try { emitter.complete(); } catch (Exception e) { log.debug("Emitter already completed: {}", e.getMessage()); } } /** * 判断异常是否为客户端断开连接（broken pipe、connection reset 等） */ private boolean isClientDisconnect(Throwable e) { if (e instanceof IOException) return true; String msg = e.getMessage(); if (msg == null) return false; String lower = msg.toLowerCase(); return lower.contains("broken pipe") || lower.contains("connection reset") || lower.contains("client abort") || lower.contains("closed"); } private final class StreamAccumulator { private final StringBuilder content = new StringBuilder(); private final StringBuilder thinking = new StringBuilder(); private final List> toolCalls = new ArrayList<>(); /** 实时分段列表（与前端 currentSegments 对齐） */ private final List> segments = new ArrayList<>(); private int segCounter = 0; private int promptTokens = 0; private int completionTokens = 0; private String runtimeModelName = ""; private String runtimeProviderId = ""; /** 标记本次流是否因工具审批挂起而终止 */ private boolean awaitingApproval = false; synchronized void accept(AgentService.StreamDelta delta, String conversationId) { if (delta == null) { return; } // 事件类型：直接广播为独立 SSE 事件名，不进入内容累积 if (delta.isEvent()) { // 拦截内部 usage 事件，不广播给前端 if ("_usage_final".equals(delta.eventType())) { Map data = delta.eventData(); promptTokens = ((Number) data.getOrDefault("promptTokens", 0)).intValue(); completionTokens = ((Number) data.getOrDefault("completionTokens", 0)).intValue(); runtimeModelName = String.valueOf(data.getOrDefault("runtimeModelName", "")); runtimeProviderId = String.valueOf(data.getOrDefault("runtimeProviderId", "")); return; } if ("phase".equals(delta.eventType())) { String phase = String.valueOf(delta.eventData().getOrDefault("phase", "")); if (!phase.isBlank()) { streamTracker.updatePhase(conversationId, phase); } } // 累积工具调用事件，用于持久化到消息历史 accumulateToolEvent(delta.eventType(), delta.eventData(), conversationId); try { broadcastEvent(conversationId, delta.eventType(), delta.eventData()); } catch (Exception e) { log.warn("Failed to broadcast event {}: {}", delta.eventType(), e.getMessage()); } return; } if (delta.content() != null && !delta.content().isBlank()) { content.append(delta.content()); streamTracker.updatePhase(conversationId, "drafting_answer"); if (!delta.persistenceOnly()) { broadcastEvent(conversationId, "content_delta", Map.of("delta", delta.content())); } // 分段：追加到当前 content segment 或创建新的 appendToContentSegment(delta.content()); } if (delta.thinking() != null && !delta.thinking().isBlank()) { thinking.append(delta.thinking()); if (!delta.persistenceOnly()) { broadcastEvent(conversationId, "thinking_delta", Map.of("delta", delta.thinking())); } // 分段：追加到当前 thinking segment 或创建新的 appendToThinkingSegment(delta.thinking()); } } boolean isAwaitingApproval() { return awaitingApproval; } private void accumulateToolEvent(String eventType, Map data, String conversationId) { if ("tool_approval_requested".equals(eventType)) { awaitingApproval = true; streamTracker.updatePhase(conversationId, "awaiting_approval"); } else if ("tool_call_started".equals(eventType)) { Map tc = new LinkedHashMap<>(); tc.put("name", data.getOrDefault("toolName", "")); tc.put("arguments", data.getOrDefault("arguments", "")); tc.put("status", "running"); toolCalls.add(tc); // 分段：关闭 running 的 thinking/content，创建新 tool_call segment closeRunningSegments("thinking", "content"); Map seg = new LinkedHashMap<>(); seg.put("id", "tc-" + segCounter++); seg.put("type", "tool_call"); seg.put("status", "running"); seg.put("toolName", data.getOrDefault("toolName", "")); seg.put("toolArgs", data.getOrDefault("arguments", "")); segments.add(seg); } else if ("tool_call_completed".equals(eventType)) { String toolName = String.valueOf(data.getOrDefault("toolName", "")); for (int i = toolCalls.size() - 1; i >= 0; i--) { Map tc = toolCalls.get(i); if ("running".equals(tc.get("status")) && toolName.equals(tc.get("name"))) { tc.put("result", data.getOrDefault("result", "")); tc.put("success", data.getOrDefault("success", true)); tc.put("status", "completed"); break; } } // 分段：标记对应 tool_call segment 完成 for (int i = segments.size() - 1; i >= 0; i--) { Map seg = segments.get(i); if ("tool_call".equals(seg.get("type")) && "running".equals(seg.get("status")) && toolName.equals(seg.get("toolName"))) { seg.put("status", "completed"); seg.put("toolResult", data.getOrDefault("result", "")); seg.put("toolSuccess", data.getOrDefault("success", true)); break; } } } } // ==================== 分段构建辅助方法 ==================== private void appendToThinkingSegment(String text) { // 查找最后一个 running thinking segment for (int i = segments.size() - 1; i >= 0; i--) { Map seg = segments.get(i); if ("thinking".equals(seg.get("type")) && "running".equals(seg.get("status"))) { seg.put("thinkingText", seg.getOrDefault("thinkingText", "") + text); return; } } // 没找到，创建新的 Map seg = new LinkedHashMap<>(); seg.put("id", "th-" + segCounter++); seg.put("type", "thinking"); seg.put("status", "running"); seg.put("thinkingText", text); segments.add(seg); } private void appendToContentSegment(String text) { // 查找最后一个 running content segment for (int i = segments.size() - 1; i >= 0; i--) { Map seg = segments.get(i); if ("content".equals(seg.get("type")) && "running".equals(seg.get("status"))) { seg.put("text", seg.getOrDefault("text", "") + text); return; } } // 没找到，关闭 thinking，创建新 content segment closeRunningSegments("thinking"); Map seg = new LinkedHashMap<>(); seg.put("id", "ct-" + segCounter++); seg.put("type", "content"); seg.put("status", "running"); seg.put("text", text); segments.add(seg); } private void closeRunningSegments(String... types) { java.util.Set typeSet = java.util.Set.of(types); for (Map seg : segments) { if ("running".equals(seg.get("status")) && typeSet.contains(seg.get("type"))) { seg.put("status", "completed"); } } } String getContent() { return content.toString().trim(); } String getThinking() { return thinking.toString().trim(); } int getPromptTokens() { return promptTokens; } int getCompletionTokens() { return completionTokens; } String getRuntimeModelName() { return runtimeModelName; } String getRuntimeProviderId() { return runtimeProviderId; } synchronized List toAssistantParts() { List parts = new ArrayList<>(); if (!getContent().isBlank()) { MessageContentPart textPart = new MessageContentPart(); textPart.setType("text"); textPart.setText(getContent()); parts.add(textPart); } if (!getThinking().isBlank()) { MessageContentPart thinkingPart = new MessageContentPart(); thinkingPart.setType("thinking"); thinkingPart.setText(getThinking()); parts.add(thinkingPart); } for (Map tc : toolCalls) { try { parts.add(MessageContentPart.toolCall(objectMapper.writeValueAsString(tc))); } catch (Exception e) { log.warn("Failed to serialize tool call: {}", e.getMessage()); } } return parts; } /** * 将所有仍为 running 的 tool calls 标记为 completed（流结束时调用）。 * 防止历史消息中出现永远转圈的工具调用。 */ void finalizeToolCalls() { for (Map tc : toolCalls) { if ("running".equals(tc.get("status"))) { tc.put("status", "completed"); } } } /** * 生成 metadata JSON：包含 toolCalls 及其他元数据 */ synchronized String toMetadataJson() { // 确保所有 tool calls 和 segments 都不是 running 状态 finalizeToolCalls(); closeRunningSegments("thinking", "content", "tool_call"); try { Map metadata = new LinkedHashMap<>(); if (!toolCalls.isEmpty()) { metadata.put("toolCalls", toolCalls); } // 使用实时构建的 segments（精确保留事件顺序，包含中间步骤） if (!segments.isEmpty()) { metadata.put("segments", segments); } return objectMapper.writeValueAsString(metadata); } catch (Exception e) { log.warn("Failed to serialize metadata: {}", e.getMessage()); return "{}"; } } } }