wehub-resource-sync
90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
/*
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* Copyright 2024 CloudWeGo Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package prompt
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import (
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"context"
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"github.com/cloudwego/eino/callbacks"
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"github.com/cloudwego/eino/components"
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"github.com/cloudwego/eino/schema"
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)
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// DefaultChatTemplate is the default chat template implementation.
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type DefaultChatTemplate struct {
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// templates is the templates for the chat template.
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templates []schema.MessagesTemplate
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// formatType is the format type for the chat template.
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formatType schema.FormatType
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}
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// FromMessages creates a new DefaultChatTemplate from the given templates and format type.
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// eg.
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//
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// template := prompt.FromMessages(schema.FString, &schema.Message{Content: "Hello, {name}!"}, &schema.Message{Content: "how are you?"})
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// // in chain, or graph
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// chain := compose.NewChain[map[string]any, []*schema.Message]()
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// chain.AppendChatTemplate(template)
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func FromMessages(formatType schema.FormatType, templates ...schema.MessagesTemplate) *DefaultChatTemplate {
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return &DefaultChatTemplate{
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templates: templates,
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formatType: formatType,
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}
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}
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// Format formats the chat template with the given context and variables.
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func (t *DefaultChatTemplate) Format(ctx context.Context,
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vs map[string]any, _ ...Option) (result []*schema.Message, err error) {
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ctx = callbacks.EnsureRunInfo(ctx, t.GetType(), components.ComponentOfPrompt)
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ctx = callbacks.OnStart(ctx, &CallbackInput{
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Variables: vs,
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Templates: t.templates,
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})
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defer func() {
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if err != nil {
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_ = callbacks.OnError(ctx, err)
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}
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}()
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result = make([]*schema.Message, 0, len(t.templates))
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for _, template := range t.templates {
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msgs, err := template.Format(ctx, vs, t.formatType)
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if err != nil {
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return nil, err
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}
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result = append(result, msgs...)
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}
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_ = callbacks.OnEnd(ctx, &CallbackOutput{
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Result: result,
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Templates: t.templates,
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})
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return result, nil
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}
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// GetType returns the type of the chat template (Default).
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func (t *DefaultChatTemplate) GetType() string {
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return "Default"
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}
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// IsCallbacksEnabled checks if the callbacks are enabled for the chat template.
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func (t *DefaultChatTemplate) IsCallbacksEnabled() bool {
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return true
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}
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