import ( "github.com/mattermost/platform-api/model" "github.com/mattermost/platform-api/client" "context" ) func getUser(userID string) (*model.User, error) { ctx, cancel := context.WithTimeout(context.Background(), time.Second*10) defer cancel() user, resp, err := client.DefaultClient.Users.GetUser(ctx, userID) if err != nil { return nil, fmt.Errorf("could not get user: %w", err) } if resp.StatusCode != http.StatusOK { return nil, fmt.Errorf("could not get user: unexpected status: %d", resp.StatusCode) } return user, nil }
func createChannel(userID, teamID, name string) (*model.Channel, error) { channel := &model.Channel{ Name: name, TeamId: teamID, Type: model.ChannelTypePrivate, DisplayName: fmt.Sprintf("%s's channel", name), } createdChannel, resp, err := client.DefaultClient.Channels.CreateChannel(userID, channel) if err != nil { return nil, fmt.Errorf("could not create channel: %w", err) } if resp.StatusCode != http.StatusCreated { return nil, fmt.Errorf("could not create channel: unexpected status: %d", resp.StatusCode) } return createdChannel, nil }This example shows how to use Context Err in a function that creates a private channel. We create a "model.Channel" object, populate its fields with the necessary data, and pass it to the "Channels.CreateChannel" function along with the user ID. If an error occurs, we use "fmt.Errorf" to add context to the error. In summary, Context Err is a useful tool for adding context to error messages in Mattermost platform API's functions. By wrapping errors in "fmt.Errorf" and including the "w" verb, we can provide more detailed error messages to help with debugging.