ContextInfo class

Context information component that provides detail information about execution context: container or/and process.

Most often ContextInfo is used by logging and performance counters to identify source of the collected logs and metrics.

Configuration parameters

• name: the context (container or process) name
• description: human-readable description of the context
• properties: entire section of additional descriptive properties
• ...

Example

let contextInfo = new ContextInfo();
contextInfo.configure(ConfigParams.fromTuples(
    'name', 'MyMicroservice',
    'description', 'My first microservice'
));

context.name;			// Result: 'MyMicroservice'
context.contextId;		// Possible result: 'mylaptop'
context.startTime;		// Possible result: 2018-01-01:22:12:23.45Z
context.uptime;			// Possible result: 3454345

Constructors

ContextInfo([String? name, String? description])

Creates a new instance of this context info.

Properties

contextId ↔ String

Gets the unique context id. Usually it is the current host name.

read / write

description ↔ String?

Gets the human-readable description of the context.

read / write

hashCode → int

The hash code for this object.

read-only, inherited

name ↔ String

Gets the context name.

read / write

properties ↔ dynamic

Gets context additional parameters.

read / write

runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

startTime ↔ DateTime

Gets the context start time.

read / write

uptime → int

Calculates the context uptime as from the start time.

read-only

Methods

configure(ConfigParams config) → void

Configures component by passing configuration parameters.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

fromConfig(ConfigParams config) → ContextInfo

Creates a new ContextInfo and sets its configuration parameters.