1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
package session
import (
"context"
"database/sql"
"fmt"
"sync"
"time"
"github.com/google/uuid"
"github.com/sst/opencode/internal/db"
"github.com/sst/opencode/internal/pubsub"
)
type Session struct {
ID string
ParentSessionID string
Title string
MessageCount int64
PromptTokens int64
CompletionTokens int64
Cost float64
Summary string
SummarizedAt time.Time
CreatedAt time.Time
UpdatedAt time.Time
}
const (
EventSessionCreated pubsub.EventType = "session_created"
EventSessionUpdated pubsub.EventType = "session_updated"
EventSessionDeleted pubsub.EventType = "session_deleted"
)
type Service interface {
pubsub.Subscriber[Session]
Create(ctx context.Context, title string) (Session, error)
CreateTaskSession(ctx context.Context, toolCallID, parentSessionID, title string) (Session, error)
Get(ctx context.Context, id string) (Session, error)
List(ctx context.Context) ([]Session, error)
Update(ctx context.Context, session Session) (Session, error)
Delete(ctx context.Context, id string) error
}
type service struct {
db *db.Queries
broker *pubsub.Broker[Session]
mu sync.RWMutex
}
var globalSessionService *service
func InitService(dbConn *sql.DB) error {
if globalSessionService != nil {
return fmt.Errorf("session service already initialized")
}
queries := db.New(dbConn)
broker := pubsub.NewBroker[Session]()
globalSessionService = &service{
db: queries,
broker: broker,
}
return nil
}
func GetService() Service {
if globalSessionService == nil {
panic("session service not initialized. Call session.InitService() first.")
}
return globalSessionService
}
func (s *service) Create(ctx context.Context, title string) (Session, error) {
s.mu.Lock()
defer s.mu.Unlock()
if title == "" {
title = "New Session - " + time.Now().Format("2006-01-02 15:04:05")
}
dbSessParams := db.CreateSessionParams{
ID: uuid.New().String(),
Title: title,
}
dbSession, err := s.db.CreateSession(ctx, dbSessParams)
if err != nil {
return Session{}, fmt.Errorf("db.CreateSession: %w", err)
}
session := s.fromDBItem(dbSession)
s.broker.Publish(EventSessionCreated, session)
return session, nil
}
func (s *service) CreateTaskSession(ctx context.Context, toolCallID, parentSessionID, title string) (Session, error) {
s.mu.Lock()
defer s.mu.Unlock()
if title == "" {
title = "Task Session - " + time.Now().Format("2006-01-02 15:04:05")
}
if toolCallID == "" {
toolCallID = uuid.New().String()
}
dbSessParams := db.CreateSessionParams{
ID: toolCallID,
ParentSessionID: sql.NullString{String: parentSessionID, Valid: parentSessionID != ""},
Title: title,
}
dbSession, err := s.db.CreateSession(ctx, dbSessParams)
if err != nil {
return Session{}, fmt.Errorf("db.CreateTaskSession: %w", err)
}
session := s.fromDBItem(dbSession)
s.broker.Publish(EventSessionCreated, session)
return session, nil
}
func (s *service) Get(ctx context.Context, id string) (Session, error) {
s.mu.RLock()
defer s.mu.RUnlock()
dbSession, err := s.db.GetSessionByID(ctx, id)
if err != nil {
if err == sql.ErrNoRows {
return Session{}, fmt.Errorf("session ID '%s' not found", id)
}
return Session{}, fmt.Errorf("db.GetSessionByID: %w", err)
}
return s.fromDBItem(dbSession), nil
}
func (s *service) List(ctx context.Context) ([]Session, error) {
s.mu.RLock()
defer s.mu.RUnlock()
dbSessions, err := s.db.ListSessions(ctx)
if err != nil {
return nil, fmt.Errorf("db.ListSessions: %w", err)
}
sessions := make([]Session, len(dbSessions))
for i, dbSess := range dbSessions {
sessions[i] = s.fromDBItem(dbSess)
}
return sessions, nil
}
func (s *service) Update(ctx context.Context, session Session) (Session, error) {
s.mu.Lock()
defer s.mu.Unlock()
if session.ID == "" {
return Session{}, fmt.Errorf("cannot update session with empty ID")
}
params := db.UpdateSessionParams{
ID: session.ID,
Title: session.Title,
PromptTokens: session.PromptTokens,
CompletionTokens: session.CompletionTokens,
Cost: session.Cost,
Summary: sql.NullString{String: session.Summary, Valid: session.Summary != ""},
SummarizedAt: sql.NullString{String: session.SummarizedAt.UTC().Format(time.RFC3339Nano), Valid: !session.SummarizedAt.IsZero()},
}
dbSession, err := s.db.UpdateSession(ctx, params)
if err != nil {
return Session{}, fmt.Errorf("db.UpdateSession: %w", err)
}
updatedSession := s.fromDBItem(dbSession)
s.broker.Publish(EventSessionUpdated, updatedSession)
return updatedSession, nil
}
func (s *service) Delete(ctx context.Context, id string) error {
s.mu.Lock()
dbSess, err := s.db.GetSessionByID(ctx, id)
if err != nil {
s.mu.Unlock()
if err == sql.ErrNoRows {
return fmt.Errorf("session ID '%s' not found for deletion", id)
}
return fmt.Errorf("db.GetSessionByID before delete: %w", err)
}
sessionToPublish := s.fromDBItem(dbSess)
s.mu.Unlock()
s.mu.Lock()
defer s.mu.Unlock()
err = s.db.DeleteSession(ctx, id)
if err != nil {
return fmt.Errorf("db.DeleteSession: %w", err)
}
s.broker.Publish(EventSessionDeleted, sessionToPublish)
return nil
}
func (s *service) Subscribe(ctx context.Context) <-chan pubsub.Event[Session] {
return s.broker.Subscribe(ctx)
}
func (s *service) fromDBItem(item db.Session) Session {
var summarizedAt time.Time
if item.SummarizedAt.Valid {
parsedTime, err := time.Parse(time.RFC3339Nano, item.SummarizedAt.String)
if err == nil {
summarizedAt = parsedTime
}
}
createdAt, _ := time.Parse(time.RFC3339Nano, item.CreatedAt)
updatedAt, _ := time.Parse(time.RFC3339Nano, item.UpdatedAt)
return Session{
ID: item.ID,
ParentSessionID: item.ParentSessionID.String,
Title: item.Title,
MessageCount: item.MessageCount,
PromptTokens: item.PromptTokens,
CompletionTokens: item.CompletionTokens,
Cost: item.Cost,
Summary: item.Summary.String,
SummarizedAt: summarizedAt,
CreatedAt: createdAt,
UpdatedAt: updatedAt,
}
}
func Create(ctx context.Context, title string) (Session, error) {
return GetService().Create(ctx, title)
}
func CreateTaskSession(ctx context.Context, toolCallID, parentSessionID, title string) (Session, error) {
return GetService().CreateTaskSession(ctx, toolCallID, parentSessionID, title)
}
func Get(ctx context.Context, id string) (Session, error) {
return GetService().Get(ctx, id)
}
func List(ctx context.Context) ([]Session, error) {
return GetService().List(ctx)
}
func Update(ctx context.Context, session Session) (Session, error) {
return GetService().Update(ctx, session)
}
func Delete(ctx context.Context, id string) error {
return GetService().Delete(ctx, id)
}
func Subscribe(ctx context.Context) <-chan pubsub.Event[Session] {
return GetService().Subscribe(ctx)
}
|
