58 lines
1.9 KiB
Go
58 lines
1.9 KiB
Go
package loop
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import (
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"context"
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"fmt"
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"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/agent"
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"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/model"
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)
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// streamStep drives a streaming model call. It is the streaming counterpart of
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// agent.RunStep: it builds the request from the agent's public surface, runs the
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// loop's input guardrail, streams deltas through OnStream, runs the output
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// guardrail and decodes any tool calls. Because RunStep does not expose a stream
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// path, this method is owned by the loop; it mirrors the agent's semantics so the
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// two behave identically apart from the delta callback.
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func (l *Loop) streamStep(ctx context.Context, messages []model.Message) (*stepOutcome, error) {
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adapter := l.agent.Adapter()
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if adapter == nil {
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return nil, fmt.Errorf("loop: stream step: %w", ErrNoAdapter)
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}
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req := l.buildRequest(messages)
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if l.guards != nil {
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verdict, err := l.guards.CheckInput(ctx, &req)
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if err != nil {
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return nil, fmt.Errorf("loop: check input: %w", err)
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}
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if verdict != nil && !verdict.Allow {
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return &stepOutcome{final: true, text: verdict.Reason, stopReason: agent.StopReasonGuardrailInput}, nil
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}
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}
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resp, err := adapter.ChatStream(ctx, req, func(delta string) {
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if l.onStream != nil {
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l.onStream(delta)
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}
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})
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if err != nil {
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return nil, fmt.Errorf("loop: chat stream: %w", err)
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}
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if l.guards != nil {
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verdict, err := l.guards.CheckOutput(ctx, &resp)
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if err != nil {
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return nil, fmt.Errorf("loop: check output: %w", err)
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}
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if verdict != nil && !verdict.Allow {
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return &stepOutcome{final: true, text: verdict.Reason, stopReason: agent.StopReasonGuardrailOutput}, nil
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}
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}
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if calls, ok := decodeToolCalls(resp); ok {
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return &stepOutcome{final: false, toolCalls: calls, stopReason: agent.StopReasonToolCalls}, nil
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}
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return &stepOutcome{final: true, text: resp.Content, stopReason: agent.StopReasonStop}, nil
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}
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