Metadata API Reference: Query collections (v2.0 and above)

Introduction

Group queries using query collections.

Create/drop query collections and add/drop a query to a collection using the following query types.

Supported from

The metadata API is supported for versions v2.0.0 and above and replaces the older schema/metadata API.

create_query_collection

create_query_collection is used to define a collection.

POST /v1/metadata HTTP/1.1
Content-Type: application/json
X-Hasura-Role: admin

{
    "type" : "create_query_collection",
    "args": {
         "name": "my_collection",
         "comment": "an optional comment",
         "definition": {
             "queries": [
                 {"name": "query_1", "query": "query { test {id name}}"}
              ]
         }
     }
}

Args Syntax

Key Required Schema Description
name true CollectionName Name of the query collection
definition true CollectionQuery array List of queries
comment false text Optional comment

drop_query_collection

drop_query_collection is used to drop a collection

POST /v1/metadata HTTP/1.1
Content-Type: application/json
X-Hasura-Role: admin

{
    "type" : "drop_query_collection",
    "args": {
         "collection": "my_collection",
         "cascade": false
     }
}

Args syntax

Key Required Schema Description
collection true CollectionName Name of the query collection
cascade true boolean When set to true, the collection (if present) is removed from the allowlist

add_query_to_collection

add_query_to_collection is used to add a query to a given collection.

POST /v1/metadata HTTP/1.1
Content-Type: application/json
X-Hasura-Role: admin

{
    "type" : "add_query_to_collection",
    "args": {
         "collection_name": "my_collection",
         "query_name": "query_2",
         "query": "query {test {name}}"
     }
}

Args Syntax

Key Required Schema Description
collection_name true CollectionName Name of the query collection
query_name true QueryName Name of the query
query true text The GraphQL query text

drop_query_from_collection

drop_query_from_collection is used to remove a query from a given collection.

POST /v1/metadata HTTP/1.1
Content-Type: application/json
X-Hasura-Role: admin

{
    "type" : "drop_query_from_collection",
    "args": {
         "collection_name": "my_collection",
         "query_name": "query_2"
     }
}

Args Syntax

Key Required Schema Description
collection_name true CollectionName Name of the query collection
query_name true QueryName Name of the query

add_collection_to_allowlist

add_collection_to_allowlist is used to add a collection to the allow-list.

POST /v1/metadata HTTP/1.1
Content-Type: application/json
X-Hasura-Role: admin

{
    "type" : "add_collection_to_allowlist",
    "args": {
         "collection": "my_collection"
     }
}

Args Syntax

Key Required Schema Description
collection true CollectionName Name of a query collection to be added to the allow-list

drop_collection_from_allowlist

drop_collection_from_allowlist is used to remove a collection from the allow-list.

POST /v1/metadata HTTP/1.1
Content-Type: application/json
X-Hasura-Role: admin

{
    "type" : "drop_collection_from_allowlist",
    "args": {
         "collection": "my_collection_1"
     }
}

Args Syntax

Key Required Schema Description
collection true CollectionName Name of a query collection to be removed from the allow-list