micro/flow/options.go

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package flow
import (
"context"
"time"
"github.com/unistack-org/micro/v3/client"
"github.com/unistack-org/micro/v3/logger"
"github.com/unistack-org/micro/v3/meter"
"github.com/unistack-org/micro/v3/store"
"github.com/unistack-org/micro/v3/tracer"
)
// Option func
type Option func(*Options)
// Options server struct
type Options struct {
// Context holds the external options and can be used for flow shutdown
Context context.Context
// Client holds the client.Client
Client client.Client
// Tracer holds the tracer
Tracer tracer.Tracer
// Logger holds the logger
Logger logger.Logger
// Meter holds the meter
Meter meter.Meter
// Store used for intermediate results
Store store.Store
}
// NewOptions returns new options struct with default or passed values
func NewOptions(opts ...Option) Options {
options := Options{
Context: context.Background(),
Logger: logger.DefaultLogger,
Meter: meter.DefaultMeter,
Tracer: tracer.DefaultTracer,
Client: client.DefaultClient,
}
for _, o := range opts {
o(&options)
}
return options
}
// Logger sets the logger option
func Logger(l logger.Logger) Option {
return func(o *Options) {
o.Logger = l
}
}
// Meter sets the meter option
func Meter(m meter.Meter) Option {
return func(o *Options) {
o.Meter = m
}
}
// Client to use for sync/async communication
func Client(c client.Client) Option {
return func(o *Options) {
o.Client = c
}
}
// Context specifies a context for the service.
// Can be used to signal shutdown of the flow
// Can be used for extra option values.
func Context(ctx context.Context) Option {
return func(o *Options) {
o.Context = ctx
}
}
// Tracer mechanism for distributed tracking
func Tracer(t tracer.Tracer) Option {
return func(o *Options) {
o.Tracer = t
}
}
// Store used for intermediate results
func Store(s store.Store) Option {
return func(o *Options) {
o.Store = s
}
}
// WorflowOption signature
type WorkflowOption func(*WorkflowOptions)
// WorkflowOptions holds workflow options
type WorkflowOptions struct {
ID string
Context context.Context
}
// WorkflowID set workflow id
func WorkflowID(id string) WorkflowOption {
return func(o *WorkflowOptions) {
o.ID = id
}
}
type ExecuteOptions struct {
// Client holds the client.Client
Client client.Client
// Tracer holds the tracer
Tracer tracer.Tracer
// Logger holds the logger
Logger logger.Logger
// Meter holds the meter
Meter meter.Meter
// Store used for intermediate results
Store store.Store
// Context can be used to abort execution or pass additional opts
Context context.Context
// Start step
Start string
// Reverse execution
Reverse bool
// Timeout for execution
Timeout time.Duration
}
type ExecuteOption func(*ExecuteOptions)
func ExecuteClient(c client.Client) ExecuteOption {
return func(o *ExecuteOptions) {
o.Client = c
}
}
func ExecuteTracer(t tracer.Tracer) ExecuteOption {
return func(o *ExecuteOptions) {
o.Tracer = t
}
}
func ExecuteLogger(l logger.Logger) ExecuteOption {
return func(o *ExecuteOptions) {
o.Logger = l
}
}
func ExecuteMeter(m meter.Meter) ExecuteOption {
return func(o *ExecuteOptions) {
o.Meter = m
}
}
func ExecuteStore(s store.Store) ExecuteOption {
return func(o *ExecuteOptions) {
o.Store = s
}
}
func ExecuteContext(ctx context.Context) ExecuteOption {
return func(o *ExecuteOptions) {
o.Context = ctx
}
}
func ExecuteReverse(b bool) ExecuteOption {
return func(o *ExecuteOptions) {
o.Reverse = b
}
}
func ExecuteTimeout(td time.Duration) ExecuteOption {
return func(o *ExecuteOptions) {
o.Timeout = td
}
}
func NewExecuteOptions(opts ...ExecuteOption) ExecuteOptions {
options := ExecuteOptions{}
for _, o := range opts {
o(&options)
}
return options
}
type StepOptions struct {
ID string
Context context.Context
Requires []string
Fallback string
}
type StepOption func(*StepOptions)
func NewStepOptions(opts ...StepOption) StepOptions {
options := StepOptions{Context: context.Background()}
for _, o := range opts {
o(&options)
}
return options
}
func StepID(id string) StepOption {
return func(o *StepOptions) {
o.ID = id
}
}
func StepRequires(steps ...string) StepOption {
return func(o *StepOptions) {
o.Requires = steps
}
}
func StepFallback(step string) StepOption {
return func(o *StepOptions) {
o.Fallback = step
}
}