asynq

type Client struct {
	// contains filtered or unexported fields
}

type Config struct {
	// Maximum number of concurrent processing of tasks.
	//
	// If set to a zero or negative value, NewServer will overwrite the value
	// to the number of CPUs usable by the currennt process.
	Concurrency int

	// Function to calculate retry delay for a failed task.
	//
	// By default, it uses exponential backoff algorithm to calculate the delay.
	RetryDelayFunc RetryDelayFunc

	// List of queues to process with given priority value. Keys are the names of the
	// queues and values are associated priority value.
	//
	// If set to nil or not specified, the server will process only the "default" queue.
	//
	// Priority is treated as follows to avoid starving low priority queues.
	//
	// Example:
	//
	//     Queues: map[string]int{
	//         "critical": 6,
	//         "default":  3,
	//         "low":      1,
	//     }
	//
	// With the above config and given that all queues are not empty, the tasks
	// in "critical", "default", "low" should be processed 60%, 30%, 10% of
	// the time respectively.
	//
	// If a queue has a zero or negative priority value, the queue will be ignored.
	Queues map[string]int

	// StrictPriority indicates whether the queue priority should be treated strictly.
	//
	// If set to true, tasks in the queue with the highest priority is processed first.
	// The tasks in lower priority queues are processed only when those queues with
	// higher priorities are empty.
	StrictPriority bool

	// ErrorHandler handles errors returned by the task handler.
	//
	// HandleError is invoked only if the task handler returns a non-nil error.
	//
	// Example:
	//
	//     func reportError(ctx context, task *asynq.Task, err error) {
	//         retried, _ := asynq.GetRetryCount(ctx)
	//         maxRetry, _ := asynq.GetMaxRetry(ctx)
	//     	   if retried >= maxRetry {
	//             err = fmt.Errorf("retry exhausted for task %s: %w", task.Type, err)
	//     	   }
	//         errorReportingService.Notify(err)
	//     })
	//
	//     ErrorHandler: asynq.ErrorHandlerFunc(reportError)
	ErrorHandler ErrorHandler

	// Logger specifies the logger used by the server instance.
	//
	// If unset, default logger is used.
	Logger Logger

	// LogLevel specifies the minimum log level to enable.
	//
	// If unset, InfoLevel is used by default.
	LogLevel LogLevel

	// ShutdownTimeout specifies the duration to wait to let workers finish their tasks
	// before forcing them to abort when stopping the server.
	//
	// If unset or zero, default timeout of 8 seconds is used.
	ShutdownTimeout time.Duration

	// HealthCheckFunc is called periodically with any errors encountered during ping to the
	// connected redis server.
	HealthCheckFunc func(error)

	// HealthCheckInterval specifies the interval between healthchecks.
	//
	// If unset or zero, the interval is set to 15 seconds.
	HealthCheckInterval time.Duration
}

type ErrorHandler interface {
	HandleError(ctx context.Context, task *Task, err error)
}

type ErrorHandlerFunc func(ctx context.Context, task *Task, err error)

type Handler interface {
	ProcessTask(context.Context, *Task) error
}

type HandlerFunc func(context.Context, *Task) error

type LogLevel int32

type Logger interface {
	// Debug logs a message at Debug level.
	Debug(args ...interface{})

	// Info logs a message at Info level.
	Info(args ...interface{})

	// Warn logs a message at Warning level.
	Warn(args ...interface{})

	// Error logs a message at Error level.
	Error(args ...interface{})

	// Fatal logs a message at Fatal level
	// and process will exit with status set to 1.
	Fatal(args ...interface{})
}

type MiddlewareFunc func(Handler) Handler

type Option interface {
	// String returns a string representation of the option.
	String() string

	// Type describes the type of the option.
	Type() OptionType

	// Value returns a value used to create this option.
	Value() interface{}
}

type OptionType int

type Payload struct {
	// contains filtered or unexported fields
}

type RedisClientOpt struct {
	// Network type to use, either tcp or unix.
	// Default is tcp.
	Network string

	// Redis server address in "host:port" format.
	Addr string

	// Username to authenticate the current connection when Redis ACLs are used.
	// See: https://redis.io/commands/auth.
	Username string

	// Password to authenticate the current connection.
	// See: https://redis.io/commands/auth.
	Password string

	// Redis DB to select after connecting to a server.
	// See: https://redis.io/commands/select.
	DB int

	// Dial timeout for establishing new connections.
	// Default is 5 seconds.
	DialTimeout time.Duration

	// Timeout for socket reads.
	// If timeout is reached, read commands will fail with a timeout error
	// instead of blocking.
	//
	// Use value -1 for no timeout and 0 for default.
	// Default is 3 seconds.
	ReadTimeout time.Duration

	// Timeout for socket writes.
	// If timeout is reached, write commands will fail with a timeout error
	// instead of blocking.
	//
	// Use value -1 for no timeout and 0 for default.
	// Default is ReadTimout.
	WriteTimeout time.Duration

	// Maximum number of socket connections.
	// Default is 10 connections per every CPU as reported by runtime.NumCPU.
	PoolSize int

	// TLS Config used to connect to a server.
	// TLS will be negotiated only if this field is set.
	TLSConfig *tls.Config
}

type RedisClusterClientOpt struct {
	// A seed list of host:port addresses of cluster nodes.
	Addrs []string

	// The maximum number of retries before giving up.
	// Command is retried on network errors and MOVED/ASK redirects.
	// Default is 8 retries.
	MaxRedirects int

	// Username to authenticate the current connection when Redis ACLs are used.
	// See: https://redis.io/commands/auth.
	Username string

	// Password to authenticate the current connection.
	// See: https://redis.io/commands/auth.
	Password string

	// Dial timeout for establishing new connections.
	// Default is 5 seconds.
	DialTimeout time.Duration

	// Timeout for socket reads.
	// If timeout is reached, read commands will fail with a timeout error
	// instead of blocking.
	//
	// Use value -1 for no timeout and 0 for default.
	// Default is 3 seconds.
	ReadTimeout time.Duration

	// Timeout for socket writes.
	// If timeout is reached, write commands will fail with a timeout error
	// instead of blocking.
	//
	// Use value -1 for no timeout and 0 for default.
	// Default is ReadTimeout.
	WriteTimeout time.Duration

	// TLS Config used to connect to a server.
	// TLS will be negotiated only if this field is set.
	TLSConfig *tls.Config
}

type RedisConnOpt interface {
	// MakeRedisClient returns a new redis client instance.
	// Return value is intentionally opaque to hide the implementation detail of redis client.
	MakeRedisClient() interface{}
}

type RedisFailoverClientOpt struct {
	// Redis master name that monitored by sentinels.
	MasterName string

	// Addresses of sentinels in "host:port" format.
	// Use at least three sentinels to avoid problems described in
	// https://redis.io/topics/sentinel.
	SentinelAddrs []string

	// Redis sentinel password.
	SentinelPassword string

	// Username to authenticate the current connection when Redis ACLs are used.
	// See: https://redis.io/commands/auth.
	Username string

	// Password to authenticate the current connection.
	// See: https://redis.io/commands/auth.
	Password string

	// Redis DB to select after connecting to a server.
	// See: https://redis.io/commands/select.
	DB int

	// Dial timeout for establishing new connections.
	// Default is 5 seconds.
	DialTimeout time.Duration

	// Timeout for socket reads.
	// If timeout is reached, read commands will fail with a timeout error
	// instead of blocking.
	//
	// Use value -1 for no timeout and 0 for default.
	// Default is 3 seconds.
	ReadTimeout time.Duration

	// Timeout for socket writes.
	// If timeout is reached, write commands will fail with a timeout error
	// instead of blocking.
	//
	// Use value -1 for no timeout and 0 for default.
	// Default is ReadTimeout
	WriteTimeout time.Duration

	// Maximum number of socket connections.
	// Default is 10 connections per every CPU as reported by runtime.NumCPU.
	PoolSize int

	// TLS Config used to connect to a server.
	// TLS will be negotiated only if this field is set.
	TLSConfig *tls.Config
}

type Result struct {
	// ID is a unique identifier for the task.
	ID string

	// EnqueuedAt is the time the task was enqueued in UTC.
	EnqueuedAt time.Time

	// ProcessAt indicates when the task should be processed.
	ProcessAt time.Time

	// Retry is the maximum number of retry for the task.
	Retry int

	// Queue is a name of the queue the task is enqueued to.
	Queue string

	// Timeout is the timeout value for the task.
	// Counting for timeout starts when a worker starts processing the task.
	// If task processing doesn't complete within the timeout, the task will be retried.
	// The value zero means no timeout.
	//
	// If deadline is set, min(now+timeout, deadline) is used, where the now is the time when
	// a worker starts processing the task.
	Timeout time.Duration

	// Deadline is the deadline value for the task.
	// If task processing doesn't complete before the deadline, the task will be retried.
	// The value time.Unix(0, 0) means no deadline.
	//
	// If timeout is set, min(now+timeout, deadline) is used, where the now is the time when
	// a worker starts processing the task.
	Deadline time.Time
}

type RetryDelayFunc func(n int, e error, t *Task) time.Duration

type Scheduler struct {
	// contains filtered or unexported fields
}

type SchedulerOpts struct {
	// Logger specifies the logger used by the scheduler instance.
	//
	// If unset, the default logger is used.
	Logger Logger

	// LogLevel specifies the minimum log level to enable.
	//
	// If unset, InfoLevel is used by default.
	LogLevel LogLevel

	// Location specifies the time zone location.
	//
	// If unset, the UTC time zone (time.UTC) is used.
	Location *time.Location

	// EnqueueErrorHandler gets called when scheduler cannot enqueue a registered task
	// due to an error.
	EnqueueErrorHandler func(task *Task, opts []Option, err error)
}

type ServeMux struct {
	// contains filtered or unexported fields
}

type Server struct {
	// contains filtered or unexported fields
}

type Task struct {
	// Type indicates the type of task to be performed.
	Type string

	// Payload holds data needed to perform the task.
	Payload Payload
}