RAGFlow go API server (#13240)

# RAGFlow Go Implementation Plan 🚀

This repository tracks the progress of porting RAGFlow to Go. We'll
implement core features and provide performance comparisons between
Python and Go versions.

## Implementation Checklist

- [x] User Management APIs
- [x] Dataset Management Operations
- [x] Retrieval Test
- [x] Chat Management Operations
- [x] Infinity Go SDK

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>
Co-authored-by: Yingfeng Zhang <yingfeng.zhang@gmail.com>

internal/model/api.go

@@ -0,0 +1,54 @@
+//
+//  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+package model
+
+// APIToken API token model
+type APIToken struct {
+	TenantID string  `gorm:"column:tenant_id;size:32;not null;primaryKey" json:"tenant_id"`
+	Token    string  `gorm:"column:token;size:255;not null;primaryKey" json:"token"`
+	DialogID *string `gorm:"column:dialog_id;size:32;index" json:"dialog_id,omitempty"`
+	Source   *string `gorm:"column:source;size:16;index" json:"source,omitempty"`
+	Beta     *string `gorm:"column:beta;size:255;index" json:"beta,omitempty"`
+	BaseModel
+}
+
+// TableName specify table name
+func (APIToken) TableName() string {
+	return "api_token"
+}
+
+// API4Conversation API for conversation model
+type API4Conversation struct {
+	ID        string  `gorm:"column:id;primaryKey;size:32" json:"id"`
+	DialogID  string  `gorm:"column:dialog_id;size:32;not null;index" json:"dialog_id"`
+	UserID    string  `gorm:"column:user_id;size:255;not null;index" json:"user_id"`
+	Message   JSONMap `gorm:"column:message;type:json" json:"message,omitempty"`
+	Reference JSONMap `gorm:"column:reference;type:json;default:'[]'" json:"reference"`
+	Tokens    int64   `gorm:"column:tokens;default:0" json:"tokens"`
+	Source    *string `gorm:"column:source;size:16;index" json:"source,omitempty"`
+	DSL       JSONMap `gorm:"column:dsl;type:json" json:"dsl,omitempty"`
+	Duration  float64 `gorm:"column:duration;default:0;index" json:"duration"`
+	Round     int64   `gorm:"column:round;default:0;index" json:"round"`
+	ThumbUp   int64   `gorm:"column:thumb_up;default:0;index" json:"thumb_up"`
+	Errors    *string `gorm:"column:errors;type:longtext" json:"errors,omitempty"`
+	BaseModel
+}
+
+// TableName specify table name
+func (API4Conversation) TableName() string {
+	return "api_4_conversation"
+}