LLMGuardX Dev
8000bccde3
- 迁移 000047:channels.department_ids(空=全局) + channel_grants 用户级授权 (source=manual/approval 区分来源)。 - 管理端:渠道部门范围配置 + 授权管理(列表/授予/撤销);渠道列表显示范围。 - 门户:我的渠道端点(/api/v1/portal/channels)按部门可见或明确授权返回, 「个人渠道」页新增可使用渠道区(授权方式标识)。 - 审批流:资源申请中的渠道类型通过后自动写 channel_grants(source=approval), 取代'批准记录即授权'的弱语义。 - 端到端验证:部门隔离(demo 无部门看不到)→手动授予→可见→撤销→不可见; 审批通过自动授权。修复 JOIN 列歧义与 uuid/text 比较。
560 lines
18 KiB
Go
560 lines
18 KiB
Go
// Package channel 实现多渠道接入:通用 Webhook + 企业微信/钉钉/飞书。
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// 入站消息经绑定模型应答后,按平台协议回发。
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package channel
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import (
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"bytes"
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"context"
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"crypto/sha1"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"log/slog"
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"net/http"
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"net/url"
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"sort"
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"strings"
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"time"
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platformid "aigateway.local/core/internal/platform/id"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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var (
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ErrNotFound = errors.New("渠道不存在")
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ErrUnavailable = errors.New("渠道服务不可用")
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)
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// Channel 是一条渠道配置。
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type Channel struct {
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ID string `json:"id"`
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Code string `json:"code"`
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Name string `json:"name"`
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Kind string `json:"kind"`
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Config json.RawMessage `json:"config,omitempty"`
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EncryptedConfig []byte `json:"-"`
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ConfigKEKVersion int `json:"-"`
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ModelBinding json.RawMessage `json:"model_binding"`
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DepartmentIDs []string `json:"department_ids"`
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HasAPIKey bool `json:"has_api_key"`
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Enabled bool `json:"enabled"`
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CreatedBy *string `json:"created_by,omitempty"`
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CreatedAt time.Time `json:"created_at"`
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UpdatedAt time.Time `json:"updated_at"`
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}
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// Config 是渠道的平台配置(明文,仅内部使用)。
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type Config struct {
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// 通用
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InboundToken string `json:"inbound_token,omitempty"` // webhook 鉴权令牌
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// 企业微信(自建应用回调 + 主动发送)
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CorpID string `json:"corp_id,omitempty"`
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Secret string `json:"secret,omitempty"`
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AgentID string `json:"agent_id,omitempty"`
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// 钉钉(机器人 webhook)
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DingRobotToken string `json:"ding_robot_token,omitempty"`
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// 飞书(应用)
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FeishuAppID string `json:"feishu_app_id,omitempty"`
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FeishuAppSecret string `json:"feishu_app_secret,omitempty"`
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}
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// Service 渠道管理 + 消息收发。
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type Service struct {
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pool *pgxpool.Pool
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gatewayURL string
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client *http.Client
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logger *slog.Logger
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cipher interface {
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Encrypt([]byte) ([]byte, int, error)
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Decrypt([]byte, int) ([]byte, error)
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}
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}
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// NewService 创建渠道服务;cipher 加密平台配置与 API Key。
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func NewService(pool *pgxpool.Pool, gatewayURL string, cipher interface {
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Encrypt([]byte) ([]byte, int, error)
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Decrypt([]byte, int) ([]byte, error)
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}, logger *slog.Logger) *Service {
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return &Service{
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pool: pool, gatewayURL: strings.TrimRight(gatewayURL, "/"), logger: logger, cipher: cipher,
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client: &http.Client{Timeout: 60 * time.Second},
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}
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}
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const channelSelect = `SELECT id::text,code,name,kind,encrypted_config,config_kek_version,model_binding,department_ids::text[],octet_length(encrypted_api_key)>0,enabled,created_by::text,created_at,updated_at FROM gateway.channels`
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func (s *Service) scan(row pgx.Row) (Channel, error) {
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var c Channel
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var createdBy *string
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err := row.Scan(&c.ID, &c.Code, &c.Name, &c.Kind, &c.EncryptedConfig, &c.ConfigKEKVersion, &c.ModelBinding, &c.DepartmentIDs, &c.HasAPIKey, &c.Enabled, &createdBy, &c.CreatedAt, &c.UpdatedAt)
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if errors.Is(err, pgx.ErrNoRows) {
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return Channel{}, ErrNotFound
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}
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if err != nil {
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return Channel{}, err
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}
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c.CreatedBy = createdBy
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return c, nil
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}
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// List 返回渠道列表(不含敏感配置)。
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func (s *Service) List(ctx context.Context) ([]Channel, error) {
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if s == nil || s.pool == nil {
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return nil, ErrUnavailable
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}
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rows, err := s.pool.Query(ctx, channelSelect+` ORDER BY updated_at DESC`)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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items := []Channel{}
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for rows.Next() {
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c, err := s.scan(rows)
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if err != nil {
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return nil, err
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}
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items = append(items, c)
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}
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return items, rows.Err()
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}
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// GetByCode 供入站分发使用(无需解密配置)。
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func (s *Service) GetByCode(ctx context.Context, code string) (Channel, error) {
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if s == nil || s.pool == nil {
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return Channel{}, ErrUnavailable
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}
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return s.scan(s.pool.QueryRow(ctx, channelSelect+` WHERE code=$1 AND enabled`, code))
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}
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// DecryptConfig 解密平台配置。
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func (s *Service) DecryptConfig(c Channel) (Config, error) {
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var cfg Config
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if len(c.EncryptedConfig) == 0 {
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return cfg, nil
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}
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plaintext, err := s.cipher.Decrypt(c.EncryptedConfig, c.ConfigKEKVersion)
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if err != nil {
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return cfg, err
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}
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if err := json.Unmarshal(plaintext, &cfg); err != nil {
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return cfg, err
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}
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return cfg, nil
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}
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// Save 创建/更新渠道。
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func (s *Service) Save(ctx context.Context, id, code, name, kind string, cfg Config, modelBinding json.RawMessage, departmentIDs []string, apiKey string, enabled bool, actorID string) (Channel, error) {
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if s == nil || s.pool == nil || s.cipher == nil {
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return Channel{}, ErrUnavailable
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}
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code = strings.ToLower(strings.TrimSpace(code))
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name = strings.TrimSpace(name)
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if !codePattern.MatchString(code) || name == "" || len(name) > 128 {
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return Channel{}, errors.New("渠道代码或名称无效")
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}
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switch kind {
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case "webhook", "wecom", "dingtalk", "feishu":
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default:
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return Channel{}, errors.New("渠道类型必须是 webhook/wecom/dingtalk/feishu")
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}
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if id == "" {
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newID, err := platformid.NewUUID()
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if err != nil {
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return Channel{}, err
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}
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id = newID
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}
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encryptedConfig, configVersion, err := s.cipher.Encrypt(mustJSON(cfg))
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if err != nil {
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return Channel{}, err
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}
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var encryptedKey []byte = []byte{}
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var keyVersion int
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if apiKey != "" {
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encryptedKey, keyVersion, err = s.cipher.Encrypt([]byte(apiKey))
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if err != nil {
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return Channel{}, err
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}
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}
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if modelBinding == nil {
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modelBinding = json.RawMessage(`{}`)
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}
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_, err = s.pool.Exec(ctx, `INSERT INTO gateway.channels(id,code,name,kind,encrypted_config,config_kek_version,encrypted_api_key,api_key_kek_version,model_binding,department_ids,enabled,created_by)
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VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12)
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ON CONFLICT(code) DO UPDATE SET name=$3,kind=$4,encrypted_config=$5,config_kek_version=$6,
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encrypted_api_key=CASE WHEN $7<>'' THEN $7 ELSE gateway.channels.encrypted_api_key END,
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api_key_kek_version=CASE WHEN $7<>'' THEN $8 ELSE gateway.channels.api_key_kek_version END,
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model_binding=$9,department_ids=$10,enabled=$11,updated_at=clock_timestamp()`,
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id, code, name, kind, encryptedConfig, configVersion, encryptedKey, keyVersion, modelBinding, departmentIDs, enabled, actorID)
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if err != nil {
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return Channel{}, err
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}
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return s.scan(s.pool.QueryRow(ctx, channelSelect+` WHERE id=$1`, id))
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}
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func (s *Service) Delete(ctx context.Context, id string) error {
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if s == nil || s.pool == nil {
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return ErrUnavailable
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}
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tag, err := s.pool.Exec(ctx, `DELETE FROM gateway.channels WHERE id=$1`, id)
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if err != nil {
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return err
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}
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if tag.RowsAffected() == 0 {
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return ErrNotFound
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}
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return nil
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}
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// DecryptAPIKey 解密渠道绑定的网关 API Key(入站调用用)。
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func (s *Service) DecryptAPIKey(ctx context.Context, c Channel) (string, error) {
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if !c.HasAPIKey {
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return "", nil
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}
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var encrypted []byte
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var version int
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if err := s.pool.QueryRow(ctx, `SELECT encrypted_api_key,api_key_kek_version FROM gateway.channels WHERE id=$1`, c.ID).Scan(&encrypted, &version); err != nil {
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return "", err
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}
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plaintext, err := s.cipher.Decrypt(encrypted, version)
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if err != nil {
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return "", err
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}
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return string(plaintext), nil
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}
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func mustJSON(value any) []byte {
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raw, _ := json.Marshal(value)
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return raw
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}
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var codePattern = regexpMust(`^[a-z][a-z0-9_-]{2,63}$`)
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// InboundMessage 是归一化的入站消息。
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type InboundMessage struct {
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FromUser string
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Text string
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}
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// HandleInbound 处理入站消息:调用绑定模型,按平台回复。
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func (s *Service) HandleInbound(ctx context.Context, c Channel, msg InboundMessage) (string, error) {
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if s == nil || s.gatewayURL == "" {
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return "", ErrUnavailable
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}
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apiKey, err := s.DecryptAPIKey(ctx, c)
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if err != nil {
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return "", err
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}
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var binding struct {
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Provider string `json:"provider"`
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Model string `json:"model"`
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}
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_ = json.Unmarshal(c.ModelBinding, &binding)
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if binding.Model == "" {
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binding.Model = "gpt-4o-mini"
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}
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payload, _ := json.Marshal(map[string]any{
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"model": binding.Model,
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"messages": []map[string]any{
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{"role": "user", "content": msg.Text},
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},
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})
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request, err := http.NewRequestWithContext(ctx, http.MethodPost, s.gatewayURL+"/v1/chat/completions", bytes.NewReader(payload))
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if err != nil {
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return "", err
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}
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request.Header.Set("Content-Type", "application/json")
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if apiKey != "" {
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request.Header.Set("Authorization", "Bearer "+apiKey)
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}
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response, err := s.client.Do(request)
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if err != nil {
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return "", err
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}
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defer response.Body.Close()
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raw, _ := io.ReadAll(io.LimitReader(response.Body, 1<<20))
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if response.StatusCode/100 != 2 {
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return "", fmt.Errorf("模型调用失败(HTTP %d)", response.StatusCode)
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}
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var decoded struct {
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Choices []struct {
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Message struct {
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Content string `json:"content"`
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} `json:"message"`
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} `json:"choices"`
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}
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if json.Unmarshal(raw, &decoded) != nil || len(decoded.Choices) == 0 {
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return "", errors.New("模型响应格式无效")
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}
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return decoded.Choices[0].Message.Content, nil
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}
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// Reply 按平台协议发送回复。webhook 渠道返回同步回复文本。
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func (s *Service) Reply(ctx context.Context, c Channel, cfg Config, text string) error {
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switch c.Kind {
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case "webhook":
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return nil // 同步返回
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case "wecom":
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return s.replyWeCom(ctx, cfg, text)
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case "dingtalk":
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return s.replyDingTalk(ctx, cfg, text)
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case "feishu":
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return s.replyFeishu(ctx, cfg, text)
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default:
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return errors.New("不支持的渠道类型")
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}
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}
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// replyWeCom 通过企业微信应用消息接口发送。
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func (s *Service) replyWeCom(ctx context.Context, cfg Config, text string) error {
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token, err := s.weComToken(ctx, cfg)
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if err != nil {
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return err
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}
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payload, _ := json.Marshal(map[string]any{
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"touser": "@all",
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"msgtype": "text",
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"agentid": cfg.AgentID,
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"text": map[string]string{"content": text},
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})
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return s.postJSON(ctx, "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token="+token, payload)
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}
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func (s *Service) weComToken(ctx context.Context, cfg Config) (string, error) {
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endpoint := fmt.Sprintf("https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=%s&corpsecret=%s", url.QueryEscape(cfg.CorpID), url.QueryEscape(cfg.Secret))
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response, err := s.client.Get(endpoint)
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if err != nil {
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return "", err
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}
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defer response.Body.Close()
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raw, _ := io.ReadAll(io.LimitReader(response.Body, 1<<16))
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var decoded struct {
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ErrCode int `json:"errcode"`
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Token string `json:"access_token"`
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}
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if json.Unmarshal(raw, &decoded) != nil || decoded.ErrCode != 0 || decoded.Token == "" {
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return "", errors.New("企业微信 token 获取失败")
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}
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return decoded.Token, nil
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}
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// replyDingTalk 通过钉钉自定义机器人 webhook 发送。
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func (s *Service) replyDingTalk(ctx context.Context, cfg Config, text string) error {
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payload, _ := json.Marshal(map[string]any{
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"msgtype": "text",
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"text": map[string]string{"content": text},
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})
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endpoint := "https://oapi.dingtalk.com/robot/send?access_token=" + url.QueryEscape(cfg.DingRobotToken)
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return s.postJSON(ctx, endpoint, payload)
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}
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// replyFeishu 通过飞书机器人消息接口发送。
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func (s *Service) replyFeishu(ctx context.Context, cfg Config, text string) error {
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token, err := s.feishuToken(ctx, cfg)
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if err != nil {
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return err
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}
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payload, _ := json.Marshal(map[string]any{
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"receive_id": "@all",
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"msg_type": "text",
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"content": map[string]string{"text": text},
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})
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return s.postJSON(ctx, "https://open.feishu.cn/open-apis/im/v1/messages?receive_id_type=chat_id", payload, func(r *http.Request) {
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r.Header.Set("Authorization", "Bearer "+token)
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})
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}
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func (s *Service) feishuToken(ctx context.Context, cfg Config) (string, error) {
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payload, _ := json.Marshal(map[string]string{"app_id": cfg.FeishuAppID, "app_secret": cfg.FeishuAppSecret})
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response, err := s.client.Post("https://open.feishu.cn/open-apis/auth/v3/tenant_access_token/internal", "application/json", bytes.NewReader(payload))
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if err != nil {
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return "", err
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}
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defer response.Body.Close()
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raw, _ := io.ReadAll(io.LimitReader(response.Body, 1<<16))
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var decoded struct {
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Code int `json:"code"`
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Token string `json:"tenant_access_token"`
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}
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if json.Unmarshal(raw, &decoded) != nil || decoded.Code != 0 || decoded.Token == "" {
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return "", errors.New("飞书 token 获取失败")
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}
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return decoded.Token, nil
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}
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func (s *Service) postJSON(ctx context.Context, endpoint string, payload []byte, options ...func(*http.Request)) error {
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request, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(payload))
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if err != nil {
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return err
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}
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request.Header.Set("Content-Type", "application/json")
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for _, option := range options {
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option(request)
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}
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response, err := s.client.Do(request)
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if err != nil {
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return err
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}
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defer response.Body.Close()
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raw, _ := io.ReadAll(io.LimitReader(response.Body, 1<<16))
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if response.StatusCode/100 != 2 {
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return fmt.Errorf("平台接口返回 HTTP %d", response.StatusCode)
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}
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var envelope struct {
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ErrCode int `json:"errcode"`
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Code int `json:"code"`
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}
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_ = json.Unmarshal(raw, &envelope)
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if envelope.ErrCode != 0 || envelope.Code != 0 {
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return fmt.Errorf("平台接口返回错误码 %d/%d", envelope.ErrCode, envelope.Code)
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}
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return nil
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}
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// VerifyWeComSignature 校验企业微信回调签名(URL 参数签名)。
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func VerifyWeComSignature(token, timestamp, nonce, echostr string, values map[string]string) (string, bool) {
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parts := []string{token, timestamp, nonce}
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if values != nil {
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keys := make([]string, 0, len(values))
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for key := range values {
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keys = append(keys, key)
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}
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sort.Strings(keys)
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for _, key := range keys {
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parts = append(parts, key+"="+values[key])
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}
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}
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sort.Strings(parts)
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sum := sha1.Sum([]byte(strings.Join(parts, "")))
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if hex.EncodeToString(sum[:]) != echostr {
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return "", false
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}
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return echostr, true
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}
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// DingSign 计算钉钉机器人加签(时间戳+密钥)。
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func DingSign(timestamp int64, secret string) string {
|
|
sum := sha256.Sum256([]byte(fmt.Sprintf("%d\n%s", timestamp, secret)))
|
|
return url.QueryEscape(hex.EncodeToString(sum[:]))
|
|
}
|
|
|
|
// ChannelGrant 是一条用户级渠道授权。
|
|
type ChannelGrant struct {
|
|
ChannelID string `json:"channel_id"`
|
|
ChannelCode string `json:"channel_code"`
|
|
ChannelName string `json:"channel_name"`
|
|
UserID string `json:"portal_user_id"`
|
|
UserLogin string `json:"user_login"`
|
|
Source string `json:"source"`
|
|
GrantedAt time.Time `json:"created_at"`
|
|
}
|
|
|
|
// ListGrants 返回渠道的用户授权列表。
|
|
func (s *Service) ListGrants(ctx context.Context, channelID string) ([]ChannelGrant, error) {
|
|
if s == nil || s.pool == nil {
|
|
return nil, ErrUnavailable
|
|
}
|
|
rows, err := s.pool.Query(ctx, `SELECT g.channel_id::text,c.code,c.name,g.portal_user_id::text,u.account,g.source,g.created_at
|
|
FROM gateway.channel_grants g JOIN gateway.channels c ON c.id=g.channel_id JOIN gateway.portal_users u ON u.id=g.portal_user_id
|
|
WHERE g.channel_id=$1 ORDER BY g.created_at DESC`, channelID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
items := []ChannelGrant{}
|
|
for rows.Next() {
|
|
var item ChannelGrant
|
|
if err := rows.Scan(&item.ChannelID, &item.ChannelCode, &item.ChannelName, &item.UserID, &item.UserLogin, &item.Source, &item.GrantedAt); err != nil {
|
|
return nil, err
|
|
}
|
|
items = append(items, item)
|
|
}
|
|
return items, rows.Err()
|
|
}
|
|
|
|
// Grant 授予用户渠道使用权限(幂等)。source: manual(管理员直接授予)或
|
|
// approval(资源申请审批通过自动写入)。
|
|
func (s *Service) Grant(ctx context.Context, channelID, portalUserID, actorID, source string) error {
|
|
if s == nil || s.pool == nil {
|
|
return ErrUnavailable
|
|
}
|
|
if source != "manual" && source != "approval" {
|
|
source = "manual"
|
|
}
|
|
var exists bool
|
|
if err := s.pool.QueryRow(ctx, `SELECT EXISTS(SELECT 1 FROM gateway.portal_users WHERE id=$1)`, portalUserID).Scan(&exists); err != nil {
|
|
return err
|
|
}
|
|
if !exists {
|
|
return ErrNotFound
|
|
}
|
|
_, err := s.pool.Exec(ctx, `INSERT INTO gateway.channel_grants(channel_id,portal_user_id,granted_by,source) VALUES($1,$2,nullif($3,'')::uuid,$4) ON CONFLICT DO NOTHING`, channelID, portalUserID, actorID, source)
|
|
return err
|
|
}
|
|
|
|
// RevokeGrant 撤销用户的渠道使用权限。
|
|
func (s *Service) RevokeGrant(ctx context.Context, channelID, portalUserID string) error {
|
|
if s == nil || s.pool == nil {
|
|
return ErrUnavailable
|
|
}
|
|
tag, err := s.pool.Exec(ctx, `DELETE FROM gateway.channel_grants WHERE channel_id=$1 AND portal_user_id=$2`, channelID, portalUserID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if tag.RowsAffected() == 0 {
|
|
return ErrNotFound
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// GrantsForUser 返回用户有明确授权的渠道(供门户"我的渠道")。
|
|
func (s *Service) GrantsForUser(ctx context.Context, portalUserID string) ([]Channel, error) {
|
|
if s == nil || s.pool == nil {
|
|
return nil, ErrUnavailable
|
|
}
|
|
rows, err := s.pool.Query(ctx, `SELECT c.* FROM (`+channelSelect+`) c JOIN gateway.channel_grants g ON g.channel_id=c.id::uuid AND g.portal_user_id=$1::uuid WHERE c.enabled ORDER BY c.updated_at DESC`, portalUserID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
items := []Channel{}
|
|
for rows.Next() {
|
|
c, err := s.scan(rows)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
items = append(items, c)
|
|
}
|
|
return items, rows.Err()
|
|
}
|
|
|
|
// VisibleChannelsForUser 返回用户可见渠道:部门可见(全局或本部门)或明确授权。
|
|
func (s *Service) VisibleChannelsForUser(ctx context.Context, portalUserID string, departmentID *string) ([]Channel, error) {
|
|
if s == nil || s.pool == nil {
|
|
return nil, ErrUnavailable
|
|
}
|
|
rows, err := s.pool.Query(ctx, `SELECT c.* FROM (`+channelSelect+`) c
|
|
WHERE c.enabled AND (
|
|
cardinality(c.department_ids)=0
|
|
OR ($2::text = ANY(c.department_ids))
|
|
OR EXISTS(SELECT 1 FROM gateway.channel_grants g WHERE g.channel_id=c.id::uuid AND g.portal_user_id=$1::uuid)
|
|
) ORDER BY c.updated_at DESC`, portalUserID, departmentID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
items := []Channel{}
|
|
for rows.Next() {
|
|
c, err := s.scan(rows)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
items = append(items, c)
|
|
}
|
|
return items, rows.Err()
|
|
}
|