2019-09-13 21:33:14 -07:00
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// Package runtime is a service runtime manager
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package runtime
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2020-01-18 02:13:24 +00:00
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import (
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"errors"
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"time"
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)
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2019-11-02 13:25:10 +00:00
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var (
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// DefaultRuntime is default micro runtime
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DefaultRuntime Runtime = NewRuntime()
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2019-11-20 14:54:42 +00:00
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// DefaultName is default runtime service name
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DefaultName = "go.micro.runtime"
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2020-01-18 02:13:24 +00:00
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ErrAlreadyExists = errors.New("already exists")
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2019-11-02 13:25:10 +00:00
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)
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2019-09-13 21:33:14 -07:00
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// Runtime is a service runtime manager
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type Runtime interface {
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2020-02-03 15:56:16 +00:00
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// String describes runtime
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String() string
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2019-11-02 13:25:10 +00:00
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// Init initializes runtime
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Init(...Option) error
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2019-11-15 13:41:40 +00:00
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// Create registers a service
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2019-09-24 18:32:35 +01:00
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Create(*Service, ...CreateOption) error
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2019-11-25 16:31:14 +00:00
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// Read returns the service
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2019-11-29 11:35:00 +00:00
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Read(...ReadOption) ([]*Service, error)
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2019-10-29 12:29:21 +00:00
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// Update the service in place
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Update(*Service) error
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2019-11-15 13:41:40 +00:00
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// Remove a service
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Delete(*Service) error
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2019-10-29 12:29:21 +00:00
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// List the managed services
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List() ([]*Service, error)
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2019-11-15 13:41:40 +00:00
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// Start starts the runtime
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2019-09-13 21:58:03 -07:00
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Start() error
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2019-11-15 13:41:40 +00:00
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// Stop shuts down the runtime
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2019-09-13 21:33:14 -07:00
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Stop() error
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2020-04-01 15:40:15 +02:00
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// Logs
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Logs(*Service, ...LogsOption) (LogStream, error)
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}
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// Stream returns a log stream
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type LogStream interface {
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Chan() chan LogRecord
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Stop() error
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}
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type LogRecord struct {
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Message string
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Metadata map[string]string
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2019-09-13 21:33:14 -07:00
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}
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2020-01-16 13:34:04 +00:00
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// Scheduler is a runtime service scheduler
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type Scheduler interface {
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// Notify publishes schedule events
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2019-11-02 13:25:10 +00:00
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Notify() (<-chan Event, error)
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2020-01-16 13:34:04 +00:00
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// Close stops the scheduler
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2019-11-02 13:25:10 +00:00
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Close() error
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2019-09-13 21:33:14 -07:00
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}
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2020-01-16 13:34:04 +00:00
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// EventType defines schedule event
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2019-11-02 13:25:10 +00:00
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type EventType int
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2019-09-13 21:58:03 -07:00
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2019-11-02 13:25:10 +00:00
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const (
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// Create is emitted when a new build has been craeted
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Create EventType = iota
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// Update is emitted when a new update become available
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Update
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// Delete is emitted when a build has been deleted
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Delete
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)
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2019-10-29 12:29:21 +00:00
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2019-11-02 13:25:10 +00:00
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// String returns human readable event type
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func (t EventType) String() string {
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switch t {
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case Create:
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return "create"
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case Delete:
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return "delete"
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case Update:
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return "update"
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default:
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return "unknown"
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}
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2019-10-29 12:29:21 +00:00
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}
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2019-11-02 13:25:10 +00:00
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// Event is notification event
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type Event struct {
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// Type is event type
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Type EventType
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// Timestamp is event timestamp
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Timestamp time.Time
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// Service is the name of the service
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Service string
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// Version of the build
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Version string
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2019-09-13 21:33:14 -07:00
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}
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2019-11-02 13:25:10 +00:00
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// Service is runtime service
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type Service struct {
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// Name of the service
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Name string
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2019-11-23 22:50:13 +00:00
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// Version of the service
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Version string
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2019-11-02 13:25:10 +00:00
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// url location of source
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Source string
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2019-11-22 17:10:00 +00:00
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// Metadata stores metadata
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Metadata map[string]string
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2019-09-13 21:33:14 -07:00
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}
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