FQL v4 will be decommissioned on June 30, 2025. Ensure that you complete your migration from FQL v4 to FQL v10 by that date.

For more details, see the v4 EOL announcement and migration guide. Contact support@fauna.com with any questions.

Key metadata

Reading or writing key definitions requires an admin key.

Problem

You need to store additional metadata within a key document.

Solution

Set the data field in a key:

adminClient.query(
  q.Update(
    q.Ref(q.Keys(), '1'),
    {
      data: {
        team: 'Engineering',
      },
    },
  )
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))
{
  ref: Ref(Keys(), "1"),
  ts: 1631728043380000,
  role: 'admin',
  hashed_secret: '$2a$05$kdsBSqgV/EoShNny0aoCMuccN94tHSqJOuTTbJ58SRIrHixS/MUhm',
  data: { team: 'Engineering' }
}
result = adminClient.query(
  q.update(
    q.ref(q.keys(), "1"),
    {
      "data": {
        "team": "Engineering"
      }
    }
  )
)
print(result)
{'ref': Ref(id=1, collection=Ref(id=keys)), 'ts': 1631728104560000, 'role': 'admin', 'hashed_secret': '$2a$05$Lo9hpVwalRvyIFbhIZbgy.Y/PEoDjAM/5RzQiVmJoJuiVic5kr/IK', 'data': {'team': 'Engineering'}}
result, err := adminClient.Query(
	f.Update(
		f.Ref(f.Keys(), "1"),
		f.Obj{
			"data": f.Obj{
				"team": "Engineering",
			},
		},
	))

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}
map[data:map[team:Engineering] hashed_secret:$2a$05$6APJkVtuIG9nrNzsfnLt4e.D.wVqCLK6sQU2GkqOWov4dSrScgaXK ref:{1 0xc000103aa0 0xc000103aa0 <nil>} role:admin ts:1631728147980000]
try
{
    Value result = await adminClient.Query(
        Update(
            Ref(Keys(), "1"),
            Obj(
                "data", Obj(
                    "team", "Engineering"
                )
            )
        )
    );
    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}
ObjectV(ref: RefV(id = "1", collection = RefV(id = "keys")),ts: LongV(1631728225420000),role: StringV(admin),hashed_secret: StringV($2a$05$W5HR2L6lJQ/fLllyqpvVw.knusY0BqHVYztLznZsBF8lvXqGNCE/S),data: ObjectV(team: StringV(Engineering)))
Update(
  Ref(Keys(), '1'),
  {
    data: {
      team: "Engineering"
    }
  }
)
{
  ref: Ref(Keys(), "1"),
  ts: 1631727967280000,
  role: 'admin',
  hashed_secret: '$2a$05$qbGb.Xk0N.7Dnu9LP6MF7up7bgAlR1RiJyyZ4zaRXT521OWwL0Sam',
  data: { team: 'Engineering' }
}
Query metrics:
  •    bytesIn:   104

  •   bytesOut:   222

  • computeOps:     1

  •    readOps:     0

  •   writeOps:     1

  •  readBytes:   128

  • writeBytes:   222

  •  queryTime: 368ms

  •    retries:     0

Discussion

You can add the metadata while creating or updating a key document.

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