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- Introduced a new `spider` package to manage connections to admin relays and synchronize events for followed pubkeys. - Added configuration options for spider mode in the application settings, allowing for different operational modes (e.g., follows). - Implemented callback mechanisms to dynamically retrieve admin relays and follow lists. - Enhanced the main application to initialize and manage the spider, including starting and stopping its operation. - Added tests to validate spider creation, callbacks, and operational behavior. - Bumped version to v0.17.14.main
mleku
3 months ago
10 changed files with 1109 additions and 21 deletions
@ -0,0 +1,581 @@
@@ -0,0 +1,581 @@
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package spider |
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import ( |
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"context" |
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"encoding/hex" |
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"fmt" |
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"sync" |
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"time" |
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"lol.mleku.dev/chk" |
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"lol.mleku.dev/errorf" |
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"lol.mleku.dev/log" |
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"next.orly.dev/pkg/database" |
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"next.orly.dev/pkg/encoders/filter" |
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"next.orly.dev/pkg/encoders/tag" |
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"next.orly.dev/pkg/encoders/timestamp" |
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"next.orly.dev/pkg/interfaces/publisher" |
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"next.orly.dev/pkg/protocol/ws" |
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) |
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const ( |
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// BatchSize is the number of pubkeys per subscription batch
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BatchSize = 20 |
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// CatchupWindow is the extra time added to disconnection periods for catch-up
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CatchupWindow = 30 * time.Minute |
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// ReconnectDelay is the delay between reconnection attempts
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ReconnectDelay = 5 * time.Second |
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// MaxReconnectDelay is the maximum delay between reconnection attempts
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MaxReconnectDelay = 5 * time.Minute |
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) |
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// Spider manages connections to admin relays and syncs events for followed pubkeys
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type Spider struct { |
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ctx context.Context |
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cancel context.CancelFunc |
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db *database.D |
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pub publisher.I |
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mode string |
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// Configuration
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adminRelays []string |
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followList [][]byte |
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// State management
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mu sync.RWMutex |
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connections map[string]*RelayConnection |
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running bool |
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// Callbacks for getting updated data
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getAdminRelays func() []string |
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getFollowList func() [][]byte |
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} |
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// RelayConnection manages a single relay connection and its subscriptions
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type RelayConnection struct { |
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url string |
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client *ws.Client |
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ctx context.Context |
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cancel context.CancelFunc |
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spider *Spider |
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// Subscription management
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mu sync.RWMutex |
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subscriptions map[string]*BatchSubscription |
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// Disconnection tracking
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lastDisconnect time.Time |
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reconnectDelay time.Duration |
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} |
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// BatchSubscription represents a subscription for a batch of pubkeys
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type BatchSubscription struct { |
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id string |
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pubkeys [][]byte |
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startTime time.Time |
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sub *ws.Subscription |
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relay *RelayConnection |
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// Track disconnection periods for catch-up
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disconnectedAt *time.Time |
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} |
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// DisconnectionPeriod tracks when a subscription was disconnected
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type DisconnectionPeriod struct { |
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Start time.Time |
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End time.Time |
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} |
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// New creates a new Spider instance
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func New(ctx context.Context, db *database.D, pub publisher.I, mode string) (s *Spider, err error) { |
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if db == nil { |
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err = errorf.E("database cannot be nil") |
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return |
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} |
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// Validate mode
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switch mode { |
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case "follows", "none": |
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// Valid modes
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default: |
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err = errorf.E("invalid spider mode: %s (valid modes: none, follows)", mode) |
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return |
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} |
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ctx, cancel := context.WithCancel(ctx) |
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s = &Spider{ |
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ctx: ctx, |
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cancel: cancel, |
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db: db, |
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pub: pub, |
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mode: mode, |
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connections: make(map[string]*RelayConnection), |
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} |
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return |
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} |
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// SetCallbacks sets the callback functions for getting updated admin relays and follow lists
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func (s *Spider) SetCallbacks(getAdminRelays func() []string, getFollowList func() [][]byte) { |
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s.mu.Lock() |
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defer s.mu.Unlock() |
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s.getAdminRelays = getAdminRelays |
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s.getFollowList = getFollowList |
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} |
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// Start begins the spider operation
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func (s *Spider) Start() (err error) { |
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s.mu.Lock() |
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defer s.mu.Unlock() |
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if s.running { |
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err = errorf.E("spider already running") |
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return |
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} |
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// Handle 'none' mode - no-op
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if s.mode == "none" { |
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log.I.F("spider: mode is 'none', not starting") |
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return |
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} |
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if s.getAdminRelays == nil || s.getFollowList == nil { |
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err = errorf.E("callbacks must be set before starting") |
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return |
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} |
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s.running = true |
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// Start the main loop
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go s.mainLoop() |
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log.I.F("spider: started in '%s' mode", s.mode) |
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return |
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} |
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// Stop stops the spider operation
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func (s *Spider) Stop() { |
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s.mu.Lock() |
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defer s.mu.Unlock() |
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if !s.running { |
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return |
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} |
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s.running = false |
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s.cancel() |
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// Close all connections
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for _, conn := range s.connections { |
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conn.close() |
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} |
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s.connections = make(map[string]*RelayConnection) |
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log.I.F("spider: stopped") |
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} |
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// mainLoop is the main spider loop that manages connections and subscriptions
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func (s *Spider) mainLoop() { |
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ticker := time.NewTicker(30 * time.Second) // Check every 30 seconds
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defer ticker.Stop() |
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for { |
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select { |
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case <-s.ctx.Done(): |
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return |
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case <-ticker.C: |
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s.updateConnections() |
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} |
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} |
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} |
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// updateConnections updates relay connections based on current admin relays and follow lists
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func (s *Spider) updateConnections() { |
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s.mu.Lock() |
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defer s.mu.Unlock() |
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if !s.running { |
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return |
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} |
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// Get current admin relays and follow list
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adminRelays := s.getAdminRelays() |
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followList := s.getFollowList() |
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if len(adminRelays) == 0 || len(followList) == 0 { |
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log.D.F("spider: no admin relays (%d) or follow list (%d) available", |
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len(adminRelays), len(followList)) |
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return |
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} |
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// Update connections for current admin relays
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currentRelays := make(map[string]bool) |
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for _, url := range adminRelays { |
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currentRelays[url] = true |
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if conn, exists := s.connections[url]; exists { |
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// Update existing connection
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conn.updateSubscriptions(followList) |
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} else { |
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// Create new connection
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s.createConnection(url, followList) |
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} |
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} |
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// Remove connections for relays no longer in admin list
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for url, conn := range s.connections { |
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if !currentRelays[url] { |
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log.I.F("spider: removing connection to %s (no longer in admin relays)", url) |
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conn.close() |
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delete(s.connections, url) |
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} |
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} |
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} |
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// createConnection creates a new relay connection
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func (s *Spider) createConnection(url string, followList [][]byte) { |
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log.I.F("spider: creating connection to %s", url) |
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ctx, cancel := context.WithCancel(s.ctx) |
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conn := &RelayConnection{ |
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url: url, |
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ctx: ctx, |
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cancel: cancel, |
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spider: s, |
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subscriptions: make(map[string]*BatchSubscription), |
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reconnectDelay: ReconnectDelay, |
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} |
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s.connections[url] = conn |
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// Start connection in goroutine
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go conn.manage(followList) |
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} |
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// manage handles the lifecycle of a relay connection
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func (rc *RelayConnection) manage(followList [][]byte) { |
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for { |
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select { |
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case <-rc.ctx.Done(): |
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return |
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default: |
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} |
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// Attempt to connect
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if err := rc.connect(); chk.E(err) { |
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log.W.F("spider: failed to connect to %s: %v", rc.url, err) |
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rc.waitBeforeReconnect() |
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continue |
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} |
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log.I.F("spider: connected to %s", rc.url) |
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rc.reconnectDelay = ReconnectDelay // Reset delay on successful connection
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// Create subscriptions for follow list
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rc.createSubscriptions(followList) |
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// Wait for disconnection
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<-rc.client.Context().Done() |
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log.W.F("spider: disconnected from %s: %v", rc.url, rc.client.ConnectionCause()) |
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rc.handleDisconnection() |
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// Clean up
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rc.client = nil |
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rc.clearSubscriptions() |
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} |
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} |
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// connect establishes a websocket connection to the relay
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func (rc *RelayConnection) connect() (err error) { |
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connectCtx, cancel := context.WithTimeout(rc.ctx, 10*time.Second) |
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defer cancel() |
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if rc.client, err = ws.RelayConnect(connectCtx, rc.url); chk.E(err) { |
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return |
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} |
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return |
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} |
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// waitBeforeReconnect waits before attempting to reconnect with exponential backoff
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func (rc *RelayConnection) waitBeforeReconnect() { |
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select { |
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case <-rc.ctx.Done(): |
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return |
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case <-time.After(rc.reconnectDelay): |
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} |
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// Exponential backoff
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rc.reconnectDelay *= 2 |
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if rc.reconnectDelay > MaxReconnectDelay { |
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rc.reconnectDelay = MaxReconnectDelay |
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} |
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} |
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// handleDisconnection records disconnection time for catch-up logic
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func (rc *RelayConnection) handleDisconnection() { |
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now := time.Now() |
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rc.lastDisconnect = now |
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// Mark all subscriptions as disconnected
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rc.mu.Lock() |
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defer rc.mu.Unlock() |
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for _, sub := range rc.subscriptions { |
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if sub.disconnectedAt == nil { |
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sub.disconnectedAt = &now |
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} |
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} |
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} |
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// createSubscriptions creates batch subscriptions for the follow list
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func (rc *RelayConnection) createSubscriptions(followList [][]byte) { |
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rc.mu.Lock() |
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defer rc.mu.Unlock() |
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// Clear existing subscriptions
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rc.clearSubscriptionsLocked() |
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// Create batches of pubkeys
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batches := rc.createBatches(followList) |
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log.I.F("spider: creating %d subscription batches for %d pubkeys on %s", |
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len(batches), len(followList), rc.url) |
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for i, batch := range batches { |
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batchID := fmt.Sprintf("batch-%d", i) // Simple batch ID
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rc.createBatchSubscription(batchID, batch) |
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} |
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} |
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// createBatches splits the follow list into batches of BatchSize
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func (rc *RelayConnection) createBatches(followList [][]byte) (batches [][][]byte) { |
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for i := 0; i < len(followList); i += BatchSize { |
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end := i + BatchSize |
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if end > len(followList) { |
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end = len(followList) |
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} |
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batch := make([][]byte, end-i) |
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copy(batch, followList[i:end]) |
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batches = append(batches, batch) |
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} |
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return |
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} |
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// createBatchSubscription creates a subscription for a batch of pubkeys
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func (rc *RelayConnection) createBatchSubscription(batchID string, pubkeys [][]byte) { |
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if rc.client == nil { |
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return |
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} |
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// Create filters: one for authors, one for p tags
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var pTags tag.S |
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for _, pk := range pubkeys { |
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pTags = append(pTags, tag.NewFromAny("p", pk)) |
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} |
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filters := filter.NewS( |
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&filter.F{ |
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Authors: tag.NewFromBytesSlice(pubkeys...), |
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}, |
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&filter.F{ |
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Tags: tag.NewS(pTags...), |
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}, |
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) |
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// Subscribe
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sub, err := rc.client.Subscribe(rc.ctx, filters) |
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if chk.E(err) { |
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log.E.F("spider: failed to create subscription %s on %s: %v", batchID, rc.url, err) |
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return |
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} |
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batchSub := &BatchSubscription{ |
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id: batchID, |
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pubkeys: pubkeys, |
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startTime: time.Now(), |
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sub: sub, |
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relay: rc, |
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} |
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rc.subscriptions[batchID] = batchSub |
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// Start event handler
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go batchSub.handleEvents() |
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log.D.F("spider: created subscription %s for %d pubkeys on %s", |
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batchID, len(pubkeys), rc.url) |
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} |
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// handleEvents processes events from the subscription
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func (bs *BatchSubscription) handleEvents() { |
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for { |
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select { |
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case <-bs.relay.ctx.Done(): |
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return |
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case ev := <-bs.sub.Events: |
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if ev == nil { |
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return // Subscription closed
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} |
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// Save event to database
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if _, err := bs.relay.spider.db.SaveEvent(bs.relay.ctx, ev); err != nil { |
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if !chk.E(err) { |
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log.T.F("spider: saved event %s from %s", |
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hex.EncodeToString(ev.ID[:]), bs.relay.url) |
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} |
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} else { |
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// Publish event if it was newly saved
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if bs.relay.spider.pub != nil { |
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go bs.relay.spider.pub.Deliver(ev) |
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} |
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} |
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} |
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} |
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} |
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// updateSubscriptions updates subscriptions for a connection with new follow list
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func (rc *RelayConnection) updateSubscriptions(followList [][]byte) { |
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if rc.client == nil || !rc.client.IsConnected() { |
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return // Will be handled on reconnection
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} |
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rc.mu.Lock() |
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defer rc.mu.Unlock() |
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// Check if we need to perform catch-up for disconnected subscriptions
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now := time.Now() |
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needsCatchup := false |
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for _, sub := range rc.subscriptions { |
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if sub.disconnectedAt != nil { |
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needsCatchup = true |
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rc.performCatchup(sub, *sub.disconnectedAt, now, followList) |
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sub.disconnectedAt = nil // Clear disconnection marker
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} |
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} |
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if needsCatchup { |
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log.I.F("spider: performed catch-up for disconnected subscriptions on %s", rc.url) |
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} |
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// Recreate subscriptions with updated follow list
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rc.clearSubscriptionsLocked() |
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batches := rc.createBatches(followList) |
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for i, batch := range batches { |
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batchID := fmt.Sprintf("batch-%d", i) |
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rc.createBatchSubscription(batchID, batch) |
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} |
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} |
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// performCatchup queries for events missed during disconnection
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func (rc *RelayConnection) performCatchup(sub *BatchSubscription, disconnectTime, reconnectTime time.Time, followList [][]byte) { |
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// Expand time window by CatchupWindow on both sides
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since := disconnectTime.Add(-CatchupWindow) |
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until := reconnectTime.Add(CatchupWindow) |
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log.I.F("spider: performing catch-up for %s from %v to %v (expanded window)", |
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rc.url, since, until) |
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// Create catch-up filters with time constraints
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sinceTs := timestamp.T{V: since.Unix()} |
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untilTs := timestamp.T{V: until.Unix()} |
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var pTags tag.S |
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for _, pk := range sub.pubkeys { |
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pTags = append(pTags, tag.NewFromAny("p", pk)) |
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} |
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filters := filter.NewS( |
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&filter.F{ |
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Authors: tag.NewFromBytesSlice(sub.pubkeys...), |
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Since: &sinceTs, |
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Until: &untilTs, |
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}, |
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&filter.F{ |
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Tags: tag.NewS(pTags...), |
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Since: &sinceTs, |
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Until: &untilTs, |
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}, |
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) |
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// Create temporary subscription for catch-up
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catchupCtx, cancel := context.WithTimeout(rc.ctx, 30*time.Second) |
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defer cancel() |
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catchupSub, err := rc.client.Subscribe(catchupCtx, filters) |
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if chk.E(err) { |
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log.E.F("spider: failed to create catch-up subscription on %s: %v", rc.url, err) |
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return |
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} |
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defer catchupSub.Unsub() |
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// Process catch-up events
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eventCount := 0 |
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timeout := time.After(30 * time.Second) |
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|
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for { |
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select { |
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case <-catchupCtx.Done(): |
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log.D.F("spider: catch-up completed on %s, processed %d events", rc.url, eventCount) |
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return |
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case <-timeout: |
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log.D.F("spider: catch-up timeout on %s, processed %d events", rc.url, eventCount) |
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return |
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case <-catchupSub.EndOfStoredEvents: |
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log.D.F("spider: catch-up EOSE on %s, processed %d events", rc.url, eventCount) |
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return |
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case ev := <-catchupSub.Events: |
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if ev == nil { |
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return |
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} |
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|
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eventCount++ |
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|
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// Save event to database
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if _, err := rc.spider.db.SaveEvent(rc.ctx, ev); err != nil { |
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if !chk.E(err) { |
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log.T.F("spider: catch-up saved event %s from %s", |
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hex.EncodeToString(ev.ID[:]), rc.url) |
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} |
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} else { |
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// Publish event if it was newly saved
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if rc.spider.pub != nil { |
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go rc.spider.pub.Deliver(ev) |
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} |
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} |
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} |
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} |
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} |
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|
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// clearSubscriptions clears all subscriptions (with lock)
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func (rc *RelayConnection) clearSubscriptions() { |
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rc.mu.Lock() |
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defer rc.mu.Unlock() |
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rc.clearSubscriptionsLocked() |
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} |
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|
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// clearSubscriptionsLocked clears all subscriptions (without lock)
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func (rc *RelayConnection) clearSubscriptionsLocked() { |
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for _, sub := range rc.subscriptions { |
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if sub.sub != nil { |
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sub.sub.Unsub() |
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} |
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} |
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rc.subscriptions = make(map[string]*BatchSubscription) |
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} |
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|
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// close closes the relay connection
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func (rc *RelayConnection) close() { |
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rc.clearSubscriptions() |
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|
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if rc.client != nil { |
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rc.client.Close() |
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rc.client = nil |
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} |
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|
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rc.cancel() |
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} |
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@ -0,0 +1,244 @@
@@ -0,0 +1,244 @@
|
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package spider |
||||
|
||||
import ( |
||||
"context" |
||||
"os" |
||||
"testing" |
||||
"time" |
||||
|
||||
"next.orly.dev/pkg/database" |
||||
) |
||||
|
||||
func TestSpiderCreation(t *testing.T) { |
||||
ctx, cancel := context.WithCancel(context.Background()) |
||||
defer cancel() |
||||
|
||||
// Create a temporary database for testing
|
||||
tempDir, err := os.MkdirTemp("", "spider-test-*") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create temp dir: %v", err) |
||||
} |
||||
defer os.RemoveAll(tempDir) |
||||
|
||||
db, err := database.New(ctx, cancel, tempDir, "error") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create test database: %v", err) |
||||
} |
||||
defer db.Close() |
||||
|
||||
// Test spider creation
|
||||
spider, err := New(ctx, db, nil, "follows") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create spider: %v", err) |
||||
} |
||||
|
||||
if spider == nil { |
||||
t.Fatal("Spider is nil") |
||||
} |
||||
|
||||
// Test that spider is not running initially
|
||||
spider.mu.RLock() |
||||
running := spider.running |
||||
spider.mu.RUnlock() |
||||
|
||||
if running { |
||||
t.Error("Spider should not be running initially") |
||||
} |
||||
} |
||||
|
||||
func TestSpiderCallbacks(t *testing.T) { |
||||
ctx, cancel := context.WithCancel(context.Background()) |
||||
defer cancel() |
||||
|
||||
// Create a temporary database for testing
|
||||
tempDir, err := os.MkdirTemp("", "spider-test-*") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create temp dir: %v", err) |
||||
} |
||||
defer os.RemoveAll(tempDir) |
||||
|
||||
db, err := database.New(ctx, cancel, tempDir, "error") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create test database: %v", err) |
||||
} |
||||
defer db.Close() |
||||
|
||||
spider, err := New(ctx, db, nil, "follows") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create spider: %v", err) |
||||
} |
||||
|
||||
// Test callback setup
|
||||
testRelays := []string{"wss://relay1.example.com", "wss://relay2.example.com"} |
||||
testPubkeys := [][]byte{{1, 2, 3}, {4, 5, 6}} |
||||
|
||||
spider.SetCallbacks( |
||||
func() []string { return testRelays }, |
||||
func() [][]byte { return testPubkeys }, |
||||
) |
||||
|
||||
// Verify callbacks are set
|
||||
spider.mu.RLock() |
||||
hasCallbacks := spider.getAdminRelays != nil && spider.getFollowList != nil |
||||
spider.mu.RUnlock() |
||||
|
||||
if !hasCallbacks { |
||||
t.Error("Callbacks should be set") |
||||
} |
||||
|
||||
// Test that start fails without callbacks being set first
|
||||
spider2, err := New(ctx, db, nil, "follows") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create second spider: %v", err) |
||||
} |
||||
|
||||
err = spider2.Start() |
||||
if err == nil { |
||||
t.Error("Start should fail when callbacks are not set") |
||||
} |
||||
} |
||||
|
||||
func TestSpiderModeValidation(t *testing.T) { |
||||
ctx, cancel := context.WithCancel(context.Background()) |
||||
defer cancel() |
||||
|
||||
// Create a temporary database for testing
|
||||
tempDir, err := os.MkdirTemp("", "spider-test-*") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create temp dir: %v", err) |
||||
} |
||||
defer os.RemoveAll(tempDir) |
||||
|
||||
db, err := database.New(ctx, cancel, tempDir, "error") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create test database: %v", err) |
||||
} |
||||
defer db.Close() |
||||
|
||||
// Test valid mode
|
||||
spider, err := New(ctx, db, nil, "follows") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create spider with valid mode: %v", err) |
||||
} |
||||
if spider == nil { |
||||
t.Fatal("Spider should not be nil for valid mode") |
||||
} |
||||
|
||||
// Test invalid mode
|
||||
_, err = New(ctx, db, nil, "invalid") |
||||
if err == nil { |
||||
t.Error("Should fail with invalid mode") |
||||
} |
||||
|
||||
// Test none mode (should succeed but be a no-op)
|
||||
spider2, err := New(ctx, db, nil, "none") |
||||
if err != nil { |
||||
t.Errorf("Should succeed with 'none' mode: %v", err) |
||||
} |
||||
if spider2 == nil { |
||||
t.Error("Spider should not be nil for 'none' mode") |
||||
} |
||||
|
||||
// Test that 'none' mode doesn't require callbacks
|
||||
err = spider2.Start() |
||||
if err != nil { |
||||
t.Errorf("'none' mode should start without callbacks: %v", err) |
||||
} |
||||
} |
||||
|
||||
func TestSpiderBatching(t *testing.T) { |
||||
// Test batch creation logic
|
||||
followList := make([][]byte, 50) // 50 pubkeys
|
||||
for i := range followList { |
||||
followList[i] = make([]byte, 32) |
||||
for j := range followList[i] { |
||||
followList[i][j] = byte(i) |
||||
} |
||||
} |
||||
|
||||
ctx, cancel := context.WithCancel(context.Background()) |
||||
defer cancel() |
||||
|
||||
rc := &RelayConnection{ |
||||
url: "wss://test.relay.com", |
||||
ctx: ctx, |
||||
} |
||||
|
||||
batches := rc.createBatches(followList) |
||||
|
||||
// Should create 3 batches: 20, 20, 10
|
||||
expectedBatches := 3 |
||||
if len(batches) != expectedBatches { |
||||
t.Errorf("Expected %d batches, got %d", expectedBatches, len(batches)) |
||||
} |
||||
|
||||
// Check batch sizes
|
||||
if len(batches[0]) != BatchSize { |
||||
t.Errorf("First batch should have %d pubkeys, got %d", BatchSize, len(batches[0])) |
||||
} |
||||
if len(batches[1]) != BatchSize { |
||||
t.Errorf("Second batch should have %d pubkeys, got %d", BatchSize, len(batches[1])) |
||||
} |
||||
if len(batches[2]) != 10 { |
||||
t.Errorf("Third batch should have 10 pubkeys, got %d", len(batches[2])) |
||||
} |
||||
} |
||||
|
||||
func TestSpiderStartStop(t *testing.T) { |
||||
ctx, cancel := context.WithCancel(context.Background()) |
||||
defer cancel() |
||||
|
||||
// Create a temporary database for testing
|
||||
tempDir, err := os.MkdirTemp("", "spider-test-*") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create temp dir: %v", err) |
||||
} |
||||
defer os.RemoveAll(tempDir) |
||||
|
||||
db, err := database.New(ctx, cancel, tempDir, "error") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create test database: %v", err) |
||||
} |
||||
defer db.Close() |
||||
|
||||
spider, err := New(ctx, db, nil, "follows") |
||||
if err != nil { |
||||
t.Fatalf("Failed to create spider: %v", err) |
||||
} |
||||
|
||||
// Set up callbacks
|
||||
spider.SetCallbacks( |
||||
func() []string { return []string{"wss://test.relay.com"} }, |
||||
func() [][]byte { return [][]byte{{1, 2, 3}} }, |
||||
) |
||||
|
||||
// Test start
|
||||
err = spider.Start() |
||||
if err != nil { |
||||
t.Fatalf("Failed to start spider: %v", err) |
||||
} |
||||
|
||||
// Verify spider is running
|
||||
spider.mu.RLock() |
||||
running := spider.running |
||||
spider.mu.RUnlock() |
||||
|
||||
if !running { |
||||
t.Error("Spider should be running after start") |
||||
} |
||||
|
||||
// Test stop
|
||||
spider.Stop() |
||||
|
||||
// Give it a moment to stop
|
||||
time.Sleep(100 * time.Millisecond) |
||||
|
||||
// Verify spider is stopped
|
||||
spider.mu.RLock() |
||||
running = spider.running |
||||
spider.mu.RUnlock() |
||||
|
||||
if running { |
||||
t.Error("Spider should not be running after stop") |
||||
} |
||||
} |
||||
Loading…
Reference in new issue