Service - Unit Manager

Overview

Each unit is handled by a Service - Unit (handlers) service.

The Unit Manager service handles shared orchestration of the Unit Handler services.

Repository

https://bitbucket.org/izara-market-products/izara-market-products-unit-manager

DynamoDB tables

Standard Config Table Per Service

Configuration tags

{
	configKey: "SupplyGraphServiceName"
	configTag: "SupplyGraphServiceName"
	configValue: xxx // eg: "SupplyGraph"
}

{
	configKey: "UnitHandlerService"
	configTag: xxx // unitHandlerServiceNameTag, eg: "UnitStandard"|"UnitPacking", this is what is saved in each record
	configValue: {
		serviceName: xxx // eg: "UnitStandard", this is the actual deployed service name}
	}
}

UnitRecord

Records which Handler manages each unit

{
	unitId
	unitHandlerServiceNameTag
}

• partition key: unitId
• sort key: (none)

Graph database

Service - Supply Graph

Nodes

{
	nodeLabel: "{UnitSharedLib.UNIT_GRAPH_NODE_LABEL}", // stored in shared npm, shared by all unit Handlers
	schema: {
		identifier: true,
		restrictProperties: true,
		restrictRelationships: true,
		properties: {
			unitId: {
				identifier: true, //(random uuid)
			},
			unitHandlerServiceNameTag: {
				immutable: true,
			},
		},
	}
}

• Unit Manager is responsible for this object type because shared by all Unit Handlers

Relationships

{
	relationshipType: "{UnitSharedLib.UNIT_OWNED_BY_USER_GRAPH_REL_TYPE}", // "unitOwnedBy_user"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: false,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

• Links to the user who currently owns the unit

{
	relationshipType: "{UnitSharedLib.UNIT_PREVIOUSLY_OWNED_BY_USER_GRAPH_REL_TYPE}", // "unitPreviouslyOwnedBy_user"
	schema: {
		elementCanBeRemoved: false,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
			fromTimestamp: //timestamp ownership began
			toTimestamp: //timestamp ownership ended
		},
	}
}

• Links to users who previously owned the unit
• Method of creating this link will be similar to versionedData, creating a new unitOwnedBy_user relationship at the same time as creating a new unitPreviouslyOwnedBy_user relationship

Ownership

• Each Unit is owned by one user, who can transfer ownership to another user
• Owner can set user level permissions for other users to manage their units, like any other user owned object
• New owner needs to accept ownership transfer for it to complete (in future could setup automatic accepatance configuration)

Working documents

Unit Manager