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Version: 0.2

Adding participants

Premium wines​

Excellent, now we have the necessary schema to create Wine type subjects. However, upon reflection, we realize that there is no one authorized to create and emit events related to this new schema. Therefore, we need to add a new participant to our network responsible for this task.

Let's start by setting up the corresponding node:

Node: Premium wines
docker run \
    -p 3001:3000 \
    -p 50001:50000 \
    -e TAPLE_HTTP=true \
    -e TAPLE_ID_PRIVATE_KEY=4f0e3c9cd24ab3420b81220bb7ebccb4e42501d3667dea81838b3bfaae20c936 \
    -e TAPLE_NETWORK_LISTEN_ADDR=/ip4/0.0.0.0/tcp/50001 \
    -e TAPLE_NETWORK_KNOWN_NODE=/ip4/172.17.0.1/tcp/50000/p2p/12D3KooWHHjN5vKSKeCWiBG3gHaDRDp6YzsEgu9iTesYqrWxAgFk \
    opencanarias/taple-client:0.2

Next, we'll proceed to update the governance to include this new member and allow them to create Wine type subjects.

note

It's not necessary to assign them the role of a witness, as the subject's owner is the default witness.

Let's verify the changes we want to make in the governance properties. At this point, our governance should look like the following:

{
    "members": [
        {
            "id": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
            "name": "WPO"
        }
    ],
    "roles": [
        {
            "namespace": "",
            "role": "WITNESS",
            "schema": {
            "ID": "governance"
            },
            "who": "MEMBERS"
        },
        {
            "namespace": "",
            "role": "APPROVER",
            "schema": {
            "ID": "governance"
            },
            "who": {
            "NAME": "WPO"
            }
        }
    ]
}

Now, we need to incorporate the mentioned changes:

{
    "members": [
        
        ...

        {
            "id": "Ee-ZvImOQSgRBDR9XH0uQ5gbVv4828h_o5GuLbWFWaLI",
            "name": "PremiumWines"
        }
    ],
    "roles": [

        ...

        {
            "namespace": "",
            "role": "CREATOR",
            "schema": {
                "ID": "Wine"
            },
            "who": {
                "NAME": "PremiumWines"
            }
        }
    ]
}

We'll use our TAPLE-Patch tool to generate these changes, following the procedure below:

Another terminal
taple-patch '{"members":[{"id":"EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs","name":"WPO"}],"roles":[{"namespace":"","role":"WITNESS","schema":{"ID":"governance"},"who":"MEMBERS"},{"namespace":"","role":"APPROVER","schema":{"ID":"governance"},"who":{"NAME":"WPO"}}]}' '{"members":[{"id":"EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs","name":"WPO"},{"id":"Ee-ZvImOQSgRBDR9XH0uQ5gbVv4828h_o5GuLbWFWaLI","name":"PremiumWines"}],"roles":[{"namespace":"","role":"WITNESS","schema":{"ID":"governance"},"who":"MEMBERS"},{"namespace":"","role":"APPROVER","schema":{"ID":"governance"},"who":{"NAME":"WPO"}},{"namespace":"","role":"CREATOR","schema":{"ID":"Wine"},"who":{"NAME":"PremiumWines"}}]}'

The result obtained will be as follows:

[
  {
    "op": "add",
    "path": "/members/1",
    "value": {
      "id": "Ee-ZvImOQSgRBDR9XH0uQ5gbVv4828h_o5GuLbWFWaLI",
      "name": "PremiumWines"
    }
  },
  {
    "op": "add",
    "path": "/roles/2",
    "value": {
      "namespace": "",
      "role": "CREATOR",
      "schema": {
        "ID": "Wine"
      },
      "who": {
        "NAME": "PremiumWines"
      }
    }
  }
]

Now, it's time to call the method of the governance contract responsible for updating its properties. To do this, we'll execute the following:

Node: WPO
curl --request POST 'http://localhost:3000/api/event-requests' \
--header 'Content-Type: application/json' \
--data-raw '{
    "request": {
    "Fact": {
        "subject_id": {{GOVERNANCE-ID}},
            "payload": {
                "Patch": {
                    "data": [{
                        "op": "add",
                        "path": "/members/1",
                        "value": {
                        "id": "Ee-ZvImOQSgRBDR9XH0uQ5gbVv4828h_o5GuLbWFWaLI",
                        "name": "PremiumWines"
                        }
                    },
                    {
                        "op": "add",
                        "path": "/roles/2",
                        "value": {
                            "namespace": "",
                            "role": "CREATOR",
                            "schema": {
                                "ID": "Wine"
                            },
                            "who": {
                                "NAME": "PremiumWines"
                            }
                        }
                    }]
                }
            }
        }
    }
}'

Once the event is emitted, we need to obtain the new update request. To do this, we run the following:

Node: WPO
curl --request GET 'http://localhost:3000/api/approval-requests?status=Pending'

We copy the value of the id field and accept the governance update request:

Node: WPO
curl --request PATCH 'http://localhost:3000/api/approval-requests/{{PREVIUS-ID}}' \
--header 'Content-Type: application/json' \
--data-raw '{"state": "RespondedAccepted"}'

We query the governance from the new node:

Node: Premium Wines
curl --request GET 'http://localhost:3001/api/subjects/{{GOVERNANCE-ID}}'

And we will get:

Not found Subject JLblI3wVzvQZPxQlz-GE1p_6OmYuKr_WyFFV97wyQV54

An error? But didn't we just include the new node in the governance, and it's a witness of it?

While the last statement is true, we must consider the following: for security reasons, the Taple node rejects all subjects that have not been explicitly sent, unless one of the following two conditions is met: the governance is configured to consider it a witness, or we explicitly authorize the subject. In the case of the governance, it's special since there's no prior governance to authorize it, so the only way to access it is by explicitly authorizing it.

Therefore, we need to execute the following to receive governance information:

Node: Premium Wines
curl --request PUT 'http://localhost:3001/api/allowed-subjects/{{GOVERNANCE-ID}}' \
--header 'Content-Type: application/json' \
--data-raw '{
    "providers": []
}'

Now, when trying to query the governance from the new node, we will get the expected information:

Node: Premium Wines
curl --request GET 'http://localhost:3001/api/subjects/{{GOVERNANCE-ID}}'
Click to look at the full governance.
{
    "subject_id": {{GOVERNANCE-ID}},
    "governance_id": "",
    "sn": 3,
    "public_key": "EUtKgajygy2tS46YWZj2piM_dxQ2gguznnOXBAZSPRzA",
    "namespace": "",
    "name": "wine_track",
    "schema_id": "governance",
    "owner": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
    "creator": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
    "properties": {
        "members": [
            {
                "id": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
                "name": "WPO"
            },
            {
                "id": "Ee-ZvImOQSgRBDR9XH0uQ5gbVv4828h_o5GuLbWFWaLI",
                "name": "PremiumWines"
            }
        ],
        "policies": [
            {
                "approve": {
                    "quorum": "MAJORITY"
                },
                "evaluate": {
                    "quorum": "MAJORITY"
                },
                "id": "governance",
                "validate": {
                    "quorum": "MAJORITY"
                }
            },
            {
                "approve": {
                    "quorum": "MAJORITY"
                },
                "evaluate": {
                    "quorum": "MAJORITY"
                },
                "id": "Wine",
                "validate": {
                    "quorum": "MAJORITY"
                }
            }
        ],
        "roles": [
            {
                "namespace": "",
                "role": "WITNESS",
                "schema": {
                    "ID": "governance"
                },
                "who": "MEMBERS"
            },
            {
                "namespace": "",
                "role": "APPROVER",
                "schema": {
                    "ID": "governance"
                },
                "who": {
                    "NAME": "WPO"
                }
            },
            {
                "namespace": "",
                "role": "CREATOR",
                "schema": {
                    "ID": "Wine"
                },
                "who": {
                    "NAME": "PremiumWines"
                }
            }
        ],
        "schemas": [
            {
                "contract": {
                    "raw": "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"
                },
                "id": "Wine",
                "initial_value": {
                    "grape": null,
                    "harvest": 0,
                    "organic_certified": null,
                    "origin": "",
                    "temperature_control": {
                        "last_check": 0,
                        "temperature_ok": true
                    }
                },
                "schema": {
                    "additionalProperties": false,
                    "description": "Representation of a bottle of wine",
                    "properties": {
                        "grape": {
                            "description": "Type of grape",
                            "enum": [
                                "CabernetSauvignon",
                                "Chardonnay",
                                "PinotNoir",
                                null
                            ],
                            "type": [
                                "string",
                                "null"
                            ]
                        },
                        "harvest": {
                            "description": "Harvest number",
                            "type": "integer"
                        },
                        "organic_certified": {
                            "description": "Certificate authenticating whether it is organic or not",
                            "type": [
                                "boolean",
                                "null"
                            ]
                        },
                        "origin": {
                            "description": "Origin of the grape",
                            "type": "string"
                        },
                        "temperature_control": {
                            "additionalProperties": false,
                            "description": "Values to be changed in the temperature control event",
                            "properties": {
                                "last_check": {
                                    "description": "Timestamp of last check",
                                    "type": "integer"
                                },
                                "temperature_ok": {
                                    "description": "Value that corroborates whether the wine cold chain has been complied with",
                                    "type": "boolean"
                                }
                            },
                            "required": [
                                "last_check",
                                "temperature_ok"
                            ],
                            "type": "object"
                        }
                    },
                    "required": [
                        "harvest",
                        "grape",
                        "origin",
                        "organic_certified",
                        "temperature_control"
                    ],
                    "type": "object"
                }
            }
        ]
    },
    "active": true
}

World Food Organization​

Currently, WPO is the only owner of the governance and has the exclusive power to approve changes to it. However, this poses a problem since its power is absolute, and, for example, it lacks representation or influence from around the world on the changes made to this governance. Therefore, there is a need to add a new member to the governance, World Food Organization (WFO), which will act as the second validator and prevent the existing monopoly by WPO.

To achieve this, we'll allow WFO to take on the roles of an approver, validator, and evaluator of the governance. Furthermore, it will be allowed to act as a witness to Wine type subjects since it's interested in collecting consumption statistics.

Let's start by setting up the WFO node:

Node: WFO
docker run \
    -p 3002:3000 \
    -p 50002:50000 \
    -e TAPLE_HTTP=true \
    -e TAPLE_ID_PRIVATE_KEY=6d3103185146ecedd28d3759df693999927e69aacb55e1aa9fe7ac17555da81c \
    -e TAPLE_NETWORK_LISTEN_ADDR=/ip4/0.0.0.0/tcp/50002 \
    -e TAPLE_NETWORK_KNOWN_NODE=/ip4/172.17.0.1/tcp/50000/p2p/12D3KooWHHjN5vKSKeCWiBG3gHaDRDp6YzsEgu9iTesYqrWxAgFk \
    opencanarias/taple-client:0.2

Next, we'll proceed to update the governance to grant it the mentioned properties:

Node: WFO
curl --request POST 'http://localhost:3000/api/event-requests' \
--header 'Content-Type: application/json' \
--data-raw '{
    "request": {
    "Fact": {
        "subject_id": {{GOVERNANCE-ID}},
            "payload": {
                "Patch": {
                    "data": [{
                        "op": "add",
                        "path": "/members/2",
                        "value": {
                        "id": "EICgJYOXXRFqDMiFsrCcUgPYnCSgUT-zwe66LP8rDpPU",
                        "name": "WFO"
                        }
                    },
                    {
                        "op": "add",
                        "path": "/roles/3",
                        "value": {
                            "namespace": "",
                            "role": "APPROVER",
                            "schema": {
                                "ID": "governance"
                            },
                            "who": {
                                "NAME": "WFO"
                            }
                        }
                    },
                    {
                        "op": "add",
                        "path": "/roles/4",
                        "value": {
                            "namespace": "",
                            "role": "VALIDATOR",
                            "schema": {
                                "ID": "governance"
                            },
                            "who": {
                                "NAME": "WFO"
                            }
                        }
                    },
                    {
                        "op": "add",
                        "path": "/roles/5",
                        "value": {
                            "namespace": "",
                            "role": "EVALUATOR",
                            "schema": {
                                "ID": "governance"
                            },
                            "who": {
                                "NAME": "WFO"
                            }
                        }
                    },
                    {
                        "op": "add",
                        "path": "/roles/6",
                        "value": {
                            "namespace": "",
                            "role": "WITNESS",
                            "schema": {
                                "ID": "Wine"
                            },
                            "who": {
                                "NAME": "WFO"
                            }
                        }
                    }]
                }
            }
        }
    }
}'
note

At this point, the steps to generate the new json-patch for the governance are not described since they are detailed in the previous section.

Once this command is executed, we should obtain the update request again. To do this, we run:

Node: WPO
curl --request GET 'http://localhost:3000/api/approval-requests?status=Pending'

We copy the value of the id field and accept the governance update request:

Node: WPO
curl --request PATCH 'http://localhost:3000/api/approval-requests/{{PREVIUS-ID}}' \
--header 'Content-Type: application/json' \
--data-raw '{"state": "RespondedAccepted"}'

At this point, we'll find ourselves in a situation similar to the one described in the previous section. Although the new node is part of the governance, it's not able to receive its information, so we need to perform its pre-authorization. To do this, we'll execute the following command:

Node: WFO
curl --request PUT 'http://localhost:3002/api/allowed-subjects/{{GOVERNANCE-ID}}' \
--header 'Content-Type: application/json' \
--data-raw '{
    "providers": []
}'

If everything has gone as expected, we can now query the governance from the new node, and it should now have an sn value of 4, as well as the change made in members and roles.

Node: WFO
curl --request GET 'http://localhost:3002/api/subjects/{{GOVERNANCE-ID}}'
Click to look at the full governance.
{
    "subject_id": {{GOVERNANCE-ID}},
    "governance_id": "",
    "sn": 4,
    "public_key": "E8tVWEasubIp7P9fzk_HttNCsABymV9m9xEPAfr-QV7M",
    "namespace": "",
    "name": "wine_track",
    "schema_id": "governance",
    "owner": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
    "creator": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
    "properties": {
        "members": [
            {
                "id": "EbwR0yYrCYpTzlN5i5GX_MtAbKRw5y2euv3TqiTgwggs",
                "name": "WPO"
            },
            {
                "id": "Ee-ZvImOQSgRBDR9XH0uQ5gbVv4828h_o5GuLbWFWaLI",
                "name": "PremiumWines"
            },
            {
                "id": "EICgJYOXXRFqDMiFsrCcUgPYnCSgUT-zwe66LP8rDpPU",
                "name": "WFO"
            }
        ],
        "policies": [
            {
                "approve": {
                    "quorum": "MAJORITY"
                },
                "evaluate": {
                    "quorum": "MAJORITY"
                },
                "id": "governance",
                "validate": {
                    "quorum": "MAJORITY"
                }
            },
            {
                "approve": {
                    "quorum": "MAJORITY"
                },
                "evaluate": {
                    "quorum": "MAJORITY"
                },
                "id": "Wine",
                "validate": {
                    "quorum": "MAJORITY"
                }
            }
        ],
        "roles": [
            {
                "namespace": "",
                "role": "WITNESS",
                "schema": {
                    "ID": "governance"
                },
                "who": "MEMBERS"
            },
            {
                "namespace": "",
                "role": "APPROVER",
                "schema": {
                    "ID": "governance"
                },
                "who": {
                    "NAME": "WPO"
                }
            },
            {
                "namespace": "",
                "role": "CREATOR",
                "schema": {
                    "ID": "Wine"
                },
                "who": {
                    "NAME": "PremiumWines"
                }
            },
            {
                "namespace": "",
                "role": "APPROVER",
                "schema": {
                    "ID": "governance"
                },
                "who": {
                    "NAME": "WFO"
                }
            },
            {
                "namespace": "",
                "role": "VALIDATOR",
                "schema": {
                    "ID": "governance"
                },
                "who": {
                    "NAME": "WFO"
                }
            },
            {
                "namespace": "",
                "role": "EVALUATOR",
                "schema": {
                    "ID": "governance"
                },
                "who": {
                    "NAME": "WFO"
                }
            },
            {
                "namespace": "",
                "role": "WITNESS",
                "schema": {
                    "ID": "Wine"
                },
                "who": {
                    "NAME": "WFO"
                }
            }
        ],
        "schemas": [
            {
                "contract": {
                    "raw": "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"
                },
                "id": "Wine",
                "initial_value": {
                    "grape": null,
                    "harvest": 0,
                    "organic_certified": null,
                    "origin": "",
                    "temperature_control": {
                        "last_check": 0,
                        "temperature_ok": true
                    }
                },
                "schema": {
                    "additionalProperties": false,
                    "description": "Representation of a bottle of wine",
                    "properties": {
                        "grape": {
                            "description": "Type of grape",
                            "enum": [
                                "CabernetSauvignon",
                                "Chardonnay",
                                "PinotNoir",
                                null
                            ],
                            "type": [
                                "string",
                                "null"
                            ]
                        },
                        "harvest": {
                            "description": "Harvest number",
                            "type": "integer"
                        },
                        "organic_certified": {
                            "description": "Certificate authenticating whether it is organic or not",
                            "type": [
                                "boolean",
                                "null"
                            ]
                        },
                        "origin": {
                            "description": "Origin of the grape",
                            "type": "string"
                        },
                        "temperature_control": {
                            "additionalProperties": false,
                            "description": "Values to be changed in the temperature control event",
                            "properties": {
                                "last_check": {
                                    "description": "Timestamp of last check",
                                    "type": "integer"
                                },
                                "temperature_ok": {
                                    "description": "Value that corroborates whether the wine cold chain has been complied with",
                                    "type": "boolean"
                                }
                            },
                            "required": [
                                "last_check",
                                "temperature_ok"
                            ],
                            "type": "object"
                        }
                    },
                    "required": [
                        "harvest",
                        "grape",
                        "origin",
                        "organic_certified",
                        "temperature_control"
                    ],
                    "type": "object"
                }
            }
        ]
    },
    "active": true
}
Last updated on