Offering template

Offering template
Offering template maybe seen as standard contract for particular service, where some parameters are variable per Agent. Offering template shipped with service module. Each service module has unique offering template. Both Agent and Client have identical offering template, when choose to use same service module.
Offering template - is JSON schema that includes:
Offering schema - offering fields to be filled by Agent
Core fields - fields that common for any service. They are required for proper Privatix core operation. They are generic and doesn't contain any service specifics.
Service custom fields - (aka additional parameters) any fields that needed for particular service operation. They do not processed by Privatix core, but passed to Privatix adapter for any custom logic.
UI schema - schema that can be used by GUI to display fields for best user experience
Each Offering template has unique hash. Any offering always includes in its body hash of corresponding offering template. That's how offering is linked to template and related service module.
When Client receives offering, he checks that:
Offering template with noted hash exists in Client's database
Offering message passes validation according to offering template
Such validation ensures, that Agent and Client both has:
exactly same offering template
offering is properly filled according to offering template schema
Offering template schema
Schema example
{
    "schema": {
        "title": "Privatix VPN offering",
        "type": "object",
        "properties": {
            "serviceName": {
                "title": "name of service",
                "type": "string",
                "description": "Friendly name of service",
                "const": "Privatix VPN"
            },
            "templateHash": {
                "title": "offering template hash",
                "type": "string",
                "description": "Hash of this offering template"
            },
            "nonce": {
                "title": "nonce",
                "type": "string",
                "description": "uuid v4. Allows same offering to be published twice, resulting in unique offering hash."
            },
            "agentPublicKey": {
                "title": "agent public key",
                "type": "string",
                "description": "Agent's public key"
            },
            "supply": {
                "title": "service supply",
                "type": "number",
                "description": "Maximum Number of concurrent orders that can coexist"
            },
            "unitName": {
                "title": "unit name",
                "type": "string",
                "description": "name of single unit of service",
                "examples": [
                    "MB",
                    "kW",
                    "Lesson"
                ]
            },
            "unitPrice": {
                "title": "unit price",
                "type": "number",
                "description": "Price in PRIX for single unit of service."
            },
            "minUnits": {
                "title": "min units",
                "type": "number",
                "description": "Minimum number of units Agent expect to sell. Deposit must suffice to buy this amount."
            },
            "maxUnits": {
                "title": "max units",
                "type": "number",
                "description": "Maximum number of units Agent will sell."
            },
            "billingType": {
                "title": "billing type",
                "type": "string",
                "enum": [
                    "prepaid",
                    "postpaid"
                ],
                "description": "Model of billing: postapaid or prepaid"
            },
            "billingFrequency": {
                "title": "billing frequency",
                "type": "number",
                "description": "Specified in units of servce. Represent, how often Client MUST send payment cheque to Agent."
            },
            "maxBillingUnitLag": {
                "title": "max billing unit lag",
                "type": "number",
                "description": "Maximum tolerance of Agent to payment lag. If reached, service access is suspended."
            },
            "maxSuspendTime": {
                "title": "max suspend time",
                "type": "number",
                "description": "Maximum time (seconds) Agent will wait for Client to continue using the service, before Agent will terminate service."
            },
            "maxInactiveTime": {
                "title": "max inactive time",
                "type": "number",
                "description": "Maximum time (seconds) Agent will wait for Client to start using the service for the first time, before Agent will terminate service."
            },
            "setupPrice": {
                "title": "setup fee",
                "type": "number",
                "description": "Setup fee is price, that must be paid before starting using a service."
            },
            "freeUnits": {
                "title": "free units",
                "type": "number",
                "description": "Number of first free units. May be used for trial period."
            },
            "country": {
                "title": "country of service",
                "type": "string",
                "description": "Origin of service"
            },
            "additionalParams": {
                "title": "Privatix VPN service parameters",
                "type": "object",
                "description": "Additional service parameters",
                "properties": {
                    "minUploadSpeed": {
                        "title": "min. upload speed",
                        "type": "string",
                        "description": "Minimum upload speed in Mbps"
                    },
                    "maxUploadSpeed": {
                        "title": "max. upload speed",
                        "type": "string",
                        "description": "Maximum upload speed in Mbps"
                    },
                    "minDownloadSpeed": {
                        "title": "min. download speed",
                        "type": "string",
                        "description": "Minimum download speed in Mbps"
                    },
                    "maxDownloadSpeed": {
                        "title": "max. upload speed",
                        "type": "string",
                        "description": "Maximum download speed in Mbps"
                    }
                },
                "required": []
            }
        },
        "required": [
            "serviceName",
            "supply",
            "unitName",
            "billingType",
            "setupPrice",
            "unitPrice",
            "minUnits",
            "maxUnits",
            "billingInterval",
            "maxBillingUnitLag",
            "freeUnits",
            "templateHash",
            "product",
            "agentPublicKey",
            "additionalParams",
            "maxSuspendTime",
            "country"
        ]
    },
    "uiSchema": {
        "agentPublicKey": {
            "ui:widget": "hidden"
        },
        "billingInterval": {
            "ui:help": "Specified in unit_of_service. Represent, how often Client MUST provide payment approval to Agent."
        },
        "billingType": {
            "ui:help": "prepaid/postpaid"
        },
        "country": {
            "ui:help": "Country of service endpoint in ISO 3166-1 alpha-2 format."
        },
        "freeUnits": {
            "ui:help": "Used to give free trial, by specifying how many intervals can be consumed without payment"
        },
        "maxBillingUnitLag": {
            "ui:help": "Maximum payment lag in units after, which Agent will suspend serviceusage."
        },
        "maxSuspendTime": {
            "ui:help": "Maximum time without service usage. Agent will consider, that Client will not use service and stop providing it. Period is specified in minutes."
        },
        "maxInactiveTime": {
            "ui:help": "Maximum time Agent will wait for Client to start using the service for the first time, before Agent will terminate service. Period is specified in minutes."
        },
        "minUnits": {
            "ui:help": "Agent expects to sell at least this amount of service."
        },
        "maxUnits": {
            "ui:help": "Agent will sell at most this amount of service."
        },
        "product": {
            "ui:widget": "hidden"
        },
        "setupPrice": {
            "ui:help": "setup fee"
        },
        "supply": {
            "ui:help": "Maximum supply of services according to service offerings. It represents maximum number of clients that can consume this service offering concurrently."
        },
        "template": {
            "ui:widget": "hidden"
        },
        "unitName": {
            "ui:help": "MB/Minutes"
        },
        "unitPrice": {
            "ui:help": "Price in PRIX for one unit of service."
        },
        "additionalParams": {
            "ui:widget": "hidden"
        }
    }
}
Offering message
Access message
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