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package events
import (
"context"
"fmt"
"log/slog"
"net/http"
"path/filepath"
"sync"
commonv1 "github.com/johnandersen777/socialweb-computer-kcp/api/common/v1alpha1"
eventsv1 "github.com/johnandersen777/socialweb-computer-kcp/api/events/v1alpha1"
"github.com/johnandersen777/socialweb-computer-kcp/internal/atproto/pdsclient"
"github.com/johnandersen777/socialweb-computer-kcp/internal/bus"
contract "github.com/johnandersen777/socialweb-computer-kcp/internal/contract/events"
"github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/atprotorecordwatch"
"github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/eventsource"
eventstreamctl "github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/eventstream"
"github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/jetstreameventsource"
"github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/pdseventsource"
"github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/relayeventsource"
ctlruntime "github.com/johnandersen777/socialweb-computer-kcp/internal/controllers/runtime"
"github.com/johnandersen777/socialweb-computer-kcp/internal/events/delivery"
"github.com/johnandersen777/socialweb-computer-kcp/internal/eventstream"
"k8s.io/apimachinery/pkg/runtime/schema"
)
const CursorDir = "eventstreams"
type Options struct {
Bus *bus.Bus
Dynamic eventstream.DynamicFactory
Resolver *pdsclient.Resolver
PLCURL string
HTTPClient *http.Client
StateDir string
Cursors contract.CursorStore
RecordWatchChildren atprotorecordwatch.Children
RecordWatchRepos atprotorecordwatch.Repos
RecordWatchValues atprotorecordwatch.ValueReader
Scope func(workspace string) bool
Log *slog.Logger
}
type sinks struct {
ctx context.Context
opts Options
mu sync.Mutex
markets map[string]*eventstream.MarketSink
}
func Register(ctx context.Context, m *ctlruntime.Manager, opts Options) (func(context.Context) error, error) {
log := opts.Log
if log == nil {
log = slog.New(slog.DiscardHandler)
}
opts.Log = log
backend := eventsource.BackendOptions{Bus: opts.Bus, Log: log}
if _, err := eventsource.Register(m, eventsource.Options{Bus: opts.Bus, Log: log}); err != nil {
return nil, err
}
if _, err := pdseventsource.Register(ctx, m, backend); err != nil {
return nil, err
}
if _, err := relayeventsource.Register(ctx, m, backend); err != nil {
return nil, err
}
if _, err := jetstreameventsource.Register(ctx, m, backend); err != nil {
return nil, err
}
cursors := opts.Cursors
if cursors == nil {
cursors = delivery.NewCursorStore(filepath.Join(opts.StateDir, CursorDir))
}
streams, err := eventstreamctl.Register(ctx, m, eventstreamctl.Options{Bus: opts.Bus, Log: log, Cursors: cursors})
if err != nil {
return nil, err
}
watches := eventstream.NewWatches(eventstream.WatchesConfig{PLCDirectoryURL: opts.PLCURL, HTTPClient: resolverHTTP(opts.Resolver),
External: opts.HTTPClient, Log: log})
if _, err := atprotorecordwatch.Register(m, atprotorecordwatch.Options{Bus: opts.Bus, Backend: watches, Children: opts.RecordWatchChildren,
Repos: opts.RecordWatchRepos, Values: opts.RecordWatchValues, Scope: opts.Scope, Log: log}); err != nil {
return nil, err
}
s := &sinks{ctx: ctx, opts: opts, markets: map[string]*eventstream.MarketSink{}}
bus.Provide[contract.Sink](opts.Bus, schema.GroupKind{Group: eventsv1.GroupName, Kind: contract.HandlerKind}, contract.CapabilityDeliver, s.openMarket)
return streams.Run, nil
}
func resolverHTTP(r *pdsclient.Resolver) *http.Client {
switch {
case r == nil:
return nil
case r.HTTPClient != nil:
return r.HTTPClient
case r.Handlers != nil:
return r.Handlers.HTTPClient()
}
return nil
}
func (s *sinks) openMarket(_ context.Context, to commonv1.ObjectRef, _ []string) (contract.Sink, error) {
role, ok := eventstream.MarketRole(to.Name)
if !ok {
return nil, fmt.Errorf("events: %s names no market role", to.String())
}
key := to.Workspace + "/" + to.Name
s.mu.Lock()
defer s.mu.Unlock()
if sink := s.markets[key]; sink != nil {
return sink, nil
}
sink, err := eventstream.NewMarketSink(eventstream.MarketOptions{Workspace: to.Workspace, Role: role, Dynamic: s.opts.Dynamic,
Resolver: s.opts.Resolver, PLCDirectoryURL: s.opts.PLCURL, Context: s.ctx, Log: s.opts.Log})
if err != nil {
return nil, err
}
s.markets[key] = sink
return sink, nil
}
