# Create a Presto Data Source

This page describes the `presto` (Presto data sources) endpoint.

{% hint style="info" %}
Additional fields may be included in some responses you receive; however, these attributes are for internal purposes and are therefore undocumented.
{% endhint %}

## Presto workflow

1. [Create a Presto data source](#create-a-data-source).
2. [Search Presto data sources](#search-presto-data-sources).
3. [Update Presto data sources](#update-presto-data-sources).

## Create a data source

<mark style="color:green;">`POST`</mark> `/presto/handler`

Save the provided connection information as a data source.

#### Payload parameters

| Attribute       | Description                                                                                                                    | Required |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------ | -------- |
| private         | `boolean` When `false`, the data source will be publicly available in the Immuta UI.                                           | **Yes**  |
| blobHandler     | `array[object]` A list of full URLs providing the locations of all blob store handlers to use with this data source.           | **Yes**  |
| blobHandlerType | `string` Describes the type of underlying blob handler that will be used with this data source (e.g., `MS SQL`).               | **Yes**  |
| recordFormat    | `string` The data format of blobs in the data source, such as `json`, `xml`, `html`, or `jpeg`.                                | **Yes**  |
| type            | `string` The type of data source: `ingested` (metadata will exist in Immuta) or `queryable` (metadata is dynamically queried). | **Yes**  |
| name            | `string` The name of the data source. It must be unique within the Immuta instance.                                            | **Yes**  |
| sqlTableName    | `string` A string that represents this data source's table in Immuta.                                                          | **Yes**  |
| organization    | `string` The organization that owns the data source.                                                                           | **Yes**  |
| category        | `string` The category of the data source.                                                                                      | No       |
| description     | `string` The description of the data source.                                                                                   | No       |
| hasExamples     | `boolean` When `true`, the data source contains examples.                                                                      | No       |

#### Response parameters

| Attribute        | Description                                                                                                   |
| ---------------- | ------------------------------------------------------------------------------------------------------------- |
| id               | `integer` The handler ID.                                                                                     |
| dataSourceId     | `integer` The ID of the data source.                                                                          |
| warnings         | `string` This message describes issues with the created data source, such as the data source being unhealthy. |
| connectionString | `string` The connection string used to connect the data source to Immuta.                                     |

### Request example

This request creates a Presto data source.

```shell
curl \
    --request POST \
    --header "Content-Type: application/json" \
    --header "Authorization: Bearer dea464c07bd07300095caa8" \
    --data @example-payload.json \
    https://demo.immuta.com/presto/handler
```

#### Payload example

```json
{
  "handler": {
    "metadata": {
      "staleDataTolerance": 86400,
      "schemaProjectName": "Public",
      "bodataSchemaName": "public",
      "columns": [{
        "name": "c_customer_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_customer_id",
        "dataType": "text",
        "remoteType": "char(16)",
        "nullable": true
      }, {
        "name": "c_current_cdemo_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_current_hdemo_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_current_addr_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_first_shipto_date_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_first_sales_date_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_salutation",
        "dataType": "text",
        "remoteType": "varchar(10)",
        "nullable": true
      }, {
        "name": "c_first_name",
        "dataType": "text",
        "remoteType": "varchar(20)",
        "nullable": true
      }, {
        "name": "c_last_name",
        "dataType": "text",
        "remoteType": "varchar(30)",
        "nullable": true
      }, {
        "name": "c_preferred_cust_flag",
        "dataType": "text",
        "remoteType": "char(1)",
        "nullable": true
      }, {
        "name": "c_birth_day",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_birth_month",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_birth_year",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_birth_country",
        "dataType": "text",
        "remoteType": "varchar(20)",
        "nullable": true
      }, {
        "name": "c_login",
        "dataType": "text",
        "remoteType": "char(13)",
        "nullable": true
      }, {
        "name": "c_email_address",
        "dataType": "text",
        "remoteType": "varchar(50)",
        "nullable": true
      }, {
        "name": "c_last_review_date",
        "dataType": "text",
        "remoteType": "varchar(10)",
        "nullable": true
      }],
      "hostname": "example-presto.host.io",
      "port": 8080,
      "ssl": false,
      "authenticationMethod": "No Authentication",
      "connectionStringOptions": "",
      "userFiles": [],
      "database": "your_database",
      "sid": "postgres",
      "table": "customer",
      "schema": "public",
      "bodataTableName": "customer",
      "dataSourceName": "Customer"
    }
  },
  "dataSource": {
    "blobHandler": {
      "scheme": "https",
      "url": ""
    },
    "blobHandlerType": "Presto",
    "recordFormat": "",
    "type": "queryable",
    "schemaEvolutionId": null,
    "columnEvolutionEnabled": true,
    "name": "Customer",
    "sqlTableName": "customer"
  },
  "schemaEvolution": {
    "ownerProfileId": 1,
    "config": {
      "nameTemplate": {
        "nameFormat": "<Tablename>",
        "tableFormat": "<tablename>",
        "sqlSchemaNameFormat": "<schema>",
        "schemaProjectNameFormat": "<Schema>"
      }
    },
    "schemas": []
  }
}
```

### Response example

```json
{
  "connectionString": "your-username@us-east-1/tpc"
  "id": 1,
  "dataSourceId": 1,
  "dataSource": {
    "blobHandler": {
      "accessKey": "REDACTED",
      "url": "https://REDACTED/presto/handler/1",
      "ca": ["-----BEGIN CERTIFICATE-----\nyourdXRhIENcertificate\n-----END CERTIFICATE-----"],
      "manualDictionary": false
    },
    "blobHandlerType": "Presto",
    "recordFormat": "Not Provided",
    "type": "queryable",
    "schemaEvolutionId": 1,
    "columnEvolutionEnabled": true,
    "name": "Customer",
    "sqlTableName": "customer",
    "sqlSchemaName": "public",
    "workspace": null,
    "rowCount": 0,
    "seeded": false,
    "owner": {},
    "documentation": "# Customer",
    "statsExpiration": "2022-07-19T18:55:21.300Z",
    "recordCount": 0,
    "createdBy": 1,
    "policyHandler": null,
    "subscriptionType": "manual",
    "id": 1,
    "description": null,
    "deleted": false,
    "policyHandlerType": "None",
    "subscriptionPolicy": null,
    "globalPolicies": null,
    "status": null,
    "statusInfo": null,
    "expiration": null,
    "catalogMetadata": null,
    "sddTemplate": null,
    "createdAt": "2022-07-19T18:55:21.302Z",
    "updatedAt": "2022-07-19T18:55:21.302Z",
    "tags": []
  },
  "warnings": []
}
```

## Search Presto data sources

### Search for handler metadata

<mark style="color:green;">`GET`</mark> `/presto/handler/{handlerId}`

Get the handler metadata associated with the provided handler ID.

#### Query parameters

| Attribute | Description                                                                             | Required |
| --------- | --------------------------------------------------------------------------------------- | -------- |
| handlerId | `integer` The specific handler ID.                                                      | **Yes**  |
| skipCache | `boolean` If `true` the handler cache will be skipped when retrieving the handler data. | No       |

#### Response parameters

| Attribute    | Description                               |
| ------------ | ----------------------------------------- |
| dataSourceId | `integer` The data source ID.             |
| value        | `metadata` Details regarding the handler. |

#### Request example

The following request returns the handler metadata associated with the provided handler ID.

```shell
curl \
    --request GET \
    --header "Content-Type: application/json" \
    --header "Authorization: Bearer dea464c07bd07300095caa8" \
    https://your-immuta-url.com/presto/handler/67
```

#### Response example

```json
{
  "dataSourceId": 67,
  "metadata": {
    "ssl": true,
    "port": 1433,
    "query": null,
    "table": "table_108",
    "schema": "elliott_dev",
    "database": "your_database",
    "hostname": "example-presto.host.io",
    "username": "your-username",
    "eventTime": null,
    "dataSourceName": "Dev Table 108",
    "bodataTableName": "table_108",
    "disableClassify": false,
    "highCardinality": "col_1",
    "bodataSchemaName": "dev",
    "columnsNormalized": false,
    "schemaProjectName": "Dev",
    "staleDataTolerance": 2592000
  },
  "type": "odbcHandler",
  "connectionString": "your-username@example-presto.host.io:1433/your_database",
  "id": 67,
  "createdAt": "2021-09-17T14:15:10.256Z",
  "updatedAt": "2021-09-17T14:15:19.547Z",
  "dbms": {
    "name": "presto"
  }
}
```

## Update Presto data sources

| Endpoint                                                | Purpose                                                                                                           |
| ------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
| `/presto/handler/{handlerId}`                           | [Updates the handler metadata associated with the provided handler ID](#update-handler-metadata).                 |
| `/presto/bulk`                                          | [Updates the data source metadata associated with the provided connection string](#update-multiple-data-sources). |
| `/presto/handler/{handlerId}/triggerHighCardinalityJob` | [Recalculates the high cardinality column for the provided handler ID](#recalculate-high-cardinality-columns).    |

### Update handler metadata

<mark style="color:green;">`PUT`</mark> `/presto/handler/{handlerId}`

Updates the handler metadata associated with the provided handler ID. This endpoint does not perform partial updates, but will allow the dictionary to be omitted. In this case it uses the current dictionary.

#### Query parameters

| Attribute | Description                                                                             | Required |
| --------- | --------------------------------------------------------------------------------------- | -------- |
| handlerId | `integer` The specific handler ID.                                                      | **Yes**  |
| skipCache | `boolean` If `true` the handler cache will be skipped when retrieving the handler data. | No       |

#### Response parameters

| Attribute    | Description                                                                                             |
| ------------ | ------------------------------------------------------------------------------------------------------- |
| dataSourceId | `integer` The data source ID.                                                                           |
| body         | `array[object]` Details regarding the handler, including schema, name format, and data source metadata. |

#### Request example

This request updates the data source name to `Marketing Data` for the data source with the handler ID `67`.

```shell
curl \
    --request PUT \
    --header "Content-Type: application/json" \
    --header "Authorization: Bearer dea464c07bd07300095caa8" \
    --data @example_payload.json
    https://your-immuta-url.com/presto/handler/67
```

**Request payload example**

```json
{
  "handler": {
    "policyHandler": null,
    "dataSourceId": 67,
    "metadata": {
      "sid": "postgres",
      "ssl": false,
      "port": 8080,
      "query": null,
      "table": "customer",
      "schema": "public",
      "database": "your_database",
      "hostname": "presto-example.io",
      "ephemeral": true,
      "eventTime": null,
      "userFiles": [],
      "dataSourceName": "Marketing Data",
      "bodataTableName": "customer",
      "highCardinality": "c_customer_sk",
      "bodataSchemaName": "public",
      "columnsNormalized": false,
      "schemaProjectName": "Public",
      "staleDataTolerance": 0,
      "authenticationMethod": "No Authentication",
      "connectionStringOptions": "",
      "columns": [{
        "name": "c_customer_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_customer_id",
        "dataType": "text",
        "remoteType": "char(16)",
        "nullable": true
      }, {
        "name": "c_current_cdemo_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_current_hdemo_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_current_addr_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_first_shipto_date_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_first_sales_date_sk",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_salutation",
        "dataType": "text",
        "remoteType": "varchar(10)",
        "nullable": true
      }, {
        "name": "c_first_name",
        "dataType": "text",
        "remoteType": "varchar(20)",
        "nullable": true
      }, {
        "name": "c_last_name",
        "dataType": "text",
        "remoteType": "varchar(30)",
        "nullable": true
      }, {
        "name": "c_preferred_cust_flag",
        "dataType": "text",
        "remoteType": "char(1)",
        "nullable": true
      }, {
        "name": "c_birth_day",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_birth_month",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_birth_year",
        "dataType": "integer",
        "remoteType": "integer",
        "nullable": true
      }, {
        "name": "c_birth_country",
        "dataType": "text",
        "remoteType": "varchar(20)",
        "nullable": true
      }, {
        "name": "c_login",
        "dataType": "text",
        "remoteType": "char(13)",
        "nullable": true
      }, {
        "name": "c_email_address",
        "dataType": "text",
        "remoteType": "varchar(50)",
        "nullable": true
      }, {
        "name": "c_last_review_date",
        "dataType": "text",
        "remoteType": "varchar(10)",
        "nullable": true
      }]
    },
    "type": "odbcHandler",
    "connectionString": "presto-example.io:8080/postgres/public",
    "id": 1,
    "createdAt": "2022-07-19T18:55:21.220Z",
    "updatedAt": "2022-07-19T18:55:23.466Z",
    "dbms": {
      "name": "presto"
    }
  }
}
```

#### Response example

```json
{
  "id": 67,
  "ca": ["-----BEGIN CERTIFICATE-----\nMIIuyourcertificate\n-----END CERTIFICATE-----"],
  "metadata": {
    "columns": [{
      "name": "c_customer_sk",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_customer_id",
      "dataType": "text",
      "remoteType": "char(16)",
      "nullable": true
    }, {
      "name": "c_current_cdemo_sk",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_current_hdemo_sk",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_current_addr_sk",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_first_shipto_date_sk",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_first_sales_date_sk",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_salutation",
      "dataType": "text",
      "remoteType": "varchar(10)",
      "nullable": true
    }, {
      "name": "c_first_name",
      "dataType": "text",
      "remoteType": "varchar(20)",
      "nullable": true
    }, {
      "name": "c_last_name",
      "dataType": "text",
      "remoteType": "varchar(30)",
      "nullable": true
    }, {
      "name": "c_preferred_cust_flag",
      "dataType": "text",
      "remoteType": "char(1)",
      "nullable": true
    }, {
      "name": "c_birth_day",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_birth_month",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_birth_year",
      "dataType": "integer",
      "remoteType": "integer",
      "nullable": true
    }, {
      "name": "c_birth_country",
      "dataType": "text",
      "remoteType": "varchar(20)",
      "nullable": true
    }, {
      "name": "c_login",
      "dataType": "text",
      "remoteType": "char(13)",
      "nullable": true
    }, {
      "name": "c_email_address",
      "dataType": "text",
      "remoteType": "varchar(50)",
      "nullable": true
    }, {
      "name": "c_last_review_date",
      "dataType": "text",
      "remoteType": "varchar(10)",
      "nullable": true
    }]
  }
}
```

### Update multiple data sources

<mark style="color:green;">`PUT`</mark> `/presto/bulk`

Updates the data source metadata associated with the provided connection string.

#### Query parameters

| Attribute | Description                                                                                     | Required |
| --------- | ----------------------------------------------------------------------------------------------- | -------- |
| body      | `array[object]` This payload includes data source metadata and specifies the connection string. | **Yes**  |

#### Response parameters

| Attribute        | Description                               |
| ---------------- | ----------------------------------------- |
| bulkId           | `integer` The bulk handler metadata ID.   |
| connectionString | `string` The specified connection string. |
| jobsCreated      | `integer` Number of jobs created.         |

#### Request example

This request updates the metadata for all data sources with the connection string specified in `example-payload.json`.

```shell
curl \
    --request PUT \
    --header "Content-Type: application/json" \
    --header "Authorization: Bearer dea464c07bd07300095caa8" \
    --data @example-payload.json \
    https://demo.immuta.com/presto/bulk
```

#### Payload example

The payload below adds a certificate (`certificate.json`) to the data sources with the provided connection.

```json
{
  "handler": {
    "metadata": {
      "sid": "postgres",
      "ssl": false,
      "port": 8080,
      "database": "your_database",
      "hostname": "presto-example.io",
      "userFiles": [{
        "keyName": "certificate",
        "filename": "576d8b38e9e8bc3749599489408a0b9f605b2a8d.md",
        "userFilename": "certificate.json"
      }],
      "authenticationMethod": "No Authentication",
      "connectionStringOptions": ""
    }
  },
  "connectionString": "presto-example.io:8080/postgres/your_database"
}
```

#### Response example

```json
{
  "bulkId": "bulk_ds_update_657dd563e6e746069bf040de5e6909a9",
  "connectionString": "presto-example.io:8080/postgres/your_database",
  "jobsCreated": 4
}
```

### Recalculate high cardinality columns

<mark style="color:green;">`PUT`</mark> `/presto/handler/{handlerId}/triggerHighCardinalityJob`

Recalculates the high cardinality column for the provided handler ID.

#### Query parameters

| Attribute | Description                        | Required |
| --------- | ---------------------------------- | -------- |
| handlerId | `integer` The specific handler ID. | **Yes**  |

#### Response parameters

The response returns a string of characters that identify the high cardinality job run.

#### Request example

The following request recalculates the high cardinality column for the provided handler ID.

```shell
curl \
    --request PUT \
    --header "Content-Type: application/json" \
    --header "Authorization: Bearer dea464c07bd07300095caa8" \
    https://your-immuta-url.com/presto/handler/67/triggerHighCardinalityJob
```

#### Response example

```json
25424a50-17df-11ec-b388-0fe1d33b5af1
```