95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package plug
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import (
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"context"
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"log"
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"git.dragse.it/anthrove/otter-space-sdk/pkg/graph"
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"git.dragse.it/anthrove/otter-space-sdk/pkg/models"
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gRPC "git.dragse.it/anthrove/plug-sdk/pkg/grpc"
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gonanoid "github.com/matoous/go-nanoid/v2"
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)
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type server struct {
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gRPC.UnimplementedPlugConnectorServer
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ctx map[string]context.CancelFunc
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database graph.OtterSpace
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taskExecutionFunction TaskExecution
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}
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func NewGrpcServer(database graph.OtterSpace, taskExecutionFunction TaskExecution) gRPC.PlugConnectorServer {
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return &server{
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ctx: make(map[string]context.CancelFunc),
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database: database,
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taskExecutionFunction: taskExecutionFunction,
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}
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}
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func (s *server) TaskStart(ctx context.Context, creation *gRPC.PlugTaskCreation) (*gRPC.PlugTaskStatus, error) {
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var anthroveUser models.AnthroveUser
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var plugTaskState gRPC.PlugTaskStatus
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var err error
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id, err := gonanoid.New()
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if err != nil {
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return nil, err
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}
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plugTaskState.TaskId = id
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plugTaskState.TaskState = gRPC.PlugTaskState_RUNNING
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anthroveUser.UserID = models.AnthroveUserID(creation.UserId)
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// gRPC closes the context after the call ended. So the whole scrapping stopped without waiting
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// by using this method we assign a new context to each new request we get.
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// This can be used for example to close the context with the given id
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ctx, cancel := context.WithCancel(context.Background())
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s.ctx[id] = cancel
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go func() {
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// FIXME: better implement this methode, works for now but needs refactoring
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err := s.taskExecutionFunction(ctx, s.database, creation.UserSourceName, anthroveUser, creation.DeepScrape, func() {
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s.removeTask(id)
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})
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if err != nil {
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log.Print(err)
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}
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}()
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return &plugTaskState, nil
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}
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func (s *server) TaskStatus(_ context.Context, task *gRPC.PlugTask) (*gRPC.PlugTaskStatus, error) {
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var plugTaskState gRPC.PlugTaskStatus
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_, found := s.ctx[task.TaskId]
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plugTaskState.TaskId = task.TaskId
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plugTaskState.TaskState = gRPC.PlugTaskState_RUNNING
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if !found {
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plugTaskState.TaskState = gRPC.PlugTaskState_UNKNOWN
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}
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return &plugTaskState, nil
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}
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func (s *server) TaskCancel(_ context.Context, task *gRPC.PlugTask) (*gRPC.PlugTaskStatus, error) {
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var plugTaskState gRPC.PlugTaskStatus
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plugTaskState.TaskState = gRPC.PlugTaskState_STOPPED
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plugTaskState.TaskId = task.TaskId
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s.removeTask(task.TaskId)
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return &plugTaskState, nil
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}
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func (s *server) removeTask(taskID string) {
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fn, exists := s.ctx[taskID]
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if !exists {
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return
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}
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fn()
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delete(s.ctx, taskID)
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}
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