Assets API

This document outlines the API endpoints and structures for managing assets within projects.

Create a New Asset

You can create a new asset using a POST request.

Endpoint

POST: https://{telmai_endpoint}/api/backend/{tenant}/configuration/projects/{projectId}/assets

Request Body

The request body defines the properties of the new asset, using DELTALAKE (Databricks) as an example.

{
  "name": "MyDeltaLakeAsset",
  "description": "a test asset for Delta Lake",
  "type": "DELTALAKE",
  "options": {
    "id_attributes": ["order_id", "item_id"],
    "separator": ",",
    "sample_fraction": 10,
    "skip_investigator": "false",
    "delta_only": "false",
    "timestamp_attribute": "event_timestamp",
    "limit": 500,
    "filter": {"region":["NA","EU"]},
    "segments": {"category":["electronics","clothing"]},
    "only_light_scan": "true",
    "resolve_wildcards_to_folders": "true"
  },
  "payload": {
    "catalog": "main_catalog",
    "schema": "sales_data",
    "table": "orders"
  },
  "connection_id": 4567
}

Fields:

name (string): A user-defined name for the asset.
description (string, optional): A description for the asset.
type (string): The type of the asset (same as connection types, e.g., DELTALAKE, REDSHIFT, GCP, BIGQUERY, SNOWFLAKE, etc.). This determines the structure of the payload field.
options (object, optional): A set of optional configuration settings for the asset.
- id_attributes (array of strings, optional): Attributes to be used as identifiers.
- separator (string, optional): Separator character for delimited files.
- sample_fraction (integer, optional): Fraction of data to sample (e.g., 25 for 25%).
- skip_investigator (string, optional): "true" to skip investigator, "false" otherwise.
- delta_only (string, optional): "true" to process only delta changes, "false" otherwise.
- timestamp_attribute (string, optional): The attribute to use for timestamp.
- limit (integer, optional): Maximum number of records to process.
- filter (object, optional): A map for filtering data, where keys are attributes and values are arrays of allowed values.
- segments (object, optional): A map for defining data segments, where keys are attributes and values are arrays of segment values.
- only_light_scan (string, optional): "true" for light scan only (supported for SNOWFLAKE, DELTALAKE, BIGQUERY).
- resolve_wildcards_to_folders (string, optional): "true" to resolve wildcards to folders.
payload (object): The asset-specific configuration. The format of this object depends on the type of the asset. Refer to the "Asset Payload Formats by Type" section below for examples.
connection_id (integer): The ID of the connection associated with this asset.

Response

The response confirms the creation of the asset and provides its details, including a unique id.

{
  "id": 1872,
  "project_id": 0,
  "name": "MyDeltaLakeAsset",
  "description": "a test asset for Delta Lake",
  "type": "DELTALAKE",
  "options": {
    "id_attributes": ["order_id", "item_id"],
    "separator": ",",
    "sample_fraction": 10,
    "skip_investigator": "false",
    "delta_only": "false",
    "timestamp_attribute": "event_timestamp",
    "limit": 500,
    "filter": {"region":["NA","EU"]},
    "segments": {"category":["electronics","clothing"]},
    "only_light_scan": "true",
    "resolve_wildcards_to_folders": "true"
  },
  "payload": {
    "catalog": "main_catalog",
    "schema": "sales_data",
    "table": "orders"
  },
  "created_by": "[email protected]",
  "created_at": "2025-06-26T14:30:00.000Z",
  "connection_id": 4567,
  "db_type": null
}

Fields:

id (integer): The unique identifier of the newly created asset.
project_id (integer): The ID of the project the asset belongs to.
name (string): The name of the asset.
description (string): The description of the asset.
type (string): The type of the asset.
options (object): The configuration options for the asset.
payload (object): The asset-specific configuration.
created_by (string): The email of the user who created the asset.
created_at (string): The timestamp when the asset was created in ISO format (UTC).
connection_id (integer): The ID of the associated connection.
db_type (string): The database type, derived from the asset's connection.

Update Asset

You can update an existing asset using a PUT request.

Endpoint

PUT: https://{telmai_endpoint}/api/backend/{tenant}/configuration/projects/{projectId}/assets/{assetId}

Request Body

The request body defines the properties to update for the asset, using DELTALAKE (Databricks) as an example. All fields are optional, and only those provided will be updated.

{
  "name": "MyUpdatedDeltaLakeAsset",
  "description": "an updated test asset for Delta Lake",
  "type": "DELTALAKE",
  "options": {
    "sample_fraction": 20,
    "delta_only": "true"
  },
  "payload": {
    "catalog": "analytics_catalog",
    "schema": "marketing_data",
    "table": "campaigns"
  },
  "connection_id": 4568
}

Fields:

name (string, optional): A new user-defined name for the asset.
description (string, optional): A new description for the asset.
type (string, optional): The new type of the asset. If changed, the payload structure must conform to the new type.
options (object, optional): New configuration settings for the asset.
payload (object, optional): New asset-specific configuration. The format of this object depends on the type of the asset.
connection_id (integer, optional): The ID of a different connection to associate with this asset.

Response

The response confirms the update of the asset and provides its latest details.

{
  "id": 1872,
  "project_id": 0,
  "name": "MyUpdatedDeltaLakeAsset",
  "description": "an updated test asset for Delta Lake",
  "type": "DELTALAKE",
  "options": {
    "id_attributes": ["order_id", "item_id"],
    "separator": ",",
    "sample_fraction": 20,
    "skip_investigator": "false",
    "delta_only": "true",
    "timestamp_attribute": "event_timestamp",
    "limit": 500,
    "filter": {"region":["NA","EU"]},
    "segments": {"category":["electronics","clothing"]},
    "only_light_scan": "true",
    "resolve_wildcards_to_folders": "true"
  },
  "payload": {
    "catalog": "analytics_catalog",
    "schema": "marketing_data",
    "table": "campaigns"
  },
  "created_by": "[email protected]",
  "created_at": "2025-06-26T14:30:00.000Z",
  "connection_id": 4568,
  "db_type": null
}

Fields: (Same as Create Asset response, reflecting updated values)

List Assets

You can retrieve a list of assets.

Endpoints

Retrieve All: Please use this endpoint to retrieve all assets you have access to GET: https://{telmai_endpoint}/api/backend/{tenant}/configuration/assets?with_attributes=true&with_schedules=true&with_lineage=true
Project-scoped: Please use this endpoint to retrieve all assets you have access to in a given project GET: https://{telmai_endpoint}/api/backend/{tenant}/configuration/projects/{projectId}/assets?with_attributes=true&with_schedules=true&with_lineage=true

Query Parameters

with_attributes (boolean, optional): If true, includes a list of attributes for each asset.
with_schedules (boolean, optional): If true, includes scheduled upload information for each asset.
with_lineage (boolean, optional): If true, includes parent and child asset IDs for lineage tracking.

Request

This API endpoint uses a GET method and does not require a request body.

Response

The response is an array of asset objects.

[
  {
    "id": 1872,
    "project_id": 0,
    "name": "MyDeltaLakeAsset",
    "description": "a test asset for Delta Lake",
    "type": "DELTALAKE",
    "options": {
      "id_attributes": ["order_id", "item_id"],
      "separator": ",",
      "sample_fraction": 10,
      "skip_investigator": "false",
      "delta_only": "false",
      "timestamp_attribute": "event_timestamp",
      "limit": 500,
      "filter": {"region":["NA","EU"]},
      "segments": {"category":["electronics","clothing"]},
      "only_light_scan": "true",
      "resolve_wildcards_to_folders": "true"
    },
    "payload": {
      "catalog": "main_catalog",
      "schema": "sales_data",
      "table": "orders"
    },
    "created_by": "[email protected]",
    "created_at": "2025-06-26T14:30:00.000Z",
    "connection_id": 4567,
    "db_type": null,
    "attributes": [ /* ... list of attributes ... */ ],
    "scheduled_upload": { /* ... scheduled upload object ... */ },
    "parents": ["T9sACQAATBg"],
    "children": ["cycdCAAAUjw"]
  }
]

Fields:

All fields from the Create Asset response.
attributes (array, optional): A list of attributes associated with the asset. Included if with_attributes=true.
scheduled_upload (object, optional): Details about any scheduled uploads for the asset. Included if with_schedules=true.
parents (array of strings, optional): List of IDs of parent assets for lineage. Included if with_lineage=true.
children (array of strings, optional): List of IDs of child assets for lineage. Included if with_lineage=true.

Get Asset

You can retrieve the details of a specific asset using a GET request.

Endpoint

GET: https://{telmai_endpoint}/api/backend/{tenant}/configuration/projects/{projectId}/assets/{assetId}

Request

This API endpoint uses a GET method and does not require a request body.

Response

The response provides the full details of the requested asset.

{
  "id": 1872,
  "project_id": 0,
  "name": "MyDeltaLakeAsset",
  "description": "a test asset for Delta Lake",
  "type": "DELTALAKE",
  "options": {
    "id_attributes": ["order_id", "item_id"],
    "separator": ",",
    "sample_fraction": 10,
    "skip_investigator": "false",
    "delta_only": "false",
    "timestamp_attribute": "event_timestamp",
    "limit": 500,
    "filter": {"region":["NA","EU"]},
    "segments": {"category":["electronics","clothing"]},
    "only_light_scan": "true",
    "resolve_wildcards_to_folders": "true"
  },
  "payload": {
    "catalog": "main_catalog",
    "schema": "sales_data",
    "table": "orders"
  },
  "created_by": "[email protected]",
  "created_at": "2025-06-26T14:30:00.000Z",
  "connection_id": 4567,
  "db_type": null,
  "attributes": [ /* ... list of attributes ... */ ],
  "scheduled_upload": { /* ... scheduled upload object ... */ },
  "parents": ["T9sACQAATBg"],
  "children": ["cycdCAAAUjw"]
}

Fields: (Same as List Assets response for a single asset)

Delete Asset

You can delete an existing asset using a DELETE request.

Endpoint

DELETE: https://{telmai_endpoint}/api/backend/{tenant}/configuration/projects/{projectId}/assets/{assetId}

Request

This API endpoint uses a DELETE method and does not require a request body.

Response

The response confirms the deletion of the asset.

{
  "message": "Asset deleted successfully"
}

Move Assets from Project to Project

You can move assets between projects using a POST request.

Endpoint

POST: https://{telmai_endpoint}/api/backend/{tenant}/configuration/projects/{targetProjectId}/assets/move

Request Body

The request body specifies the source project, the assets to move, and an optional target connection.

{
  "source_project_id": 0,
  "source_asset_ids": ["T9sACQAATBg", "cycdCAAAUjw"],
  "target_connection_id": 4567
}

Fields:

source_project_id (integer): The ID of the project from which the assets will be moved.
source_asset_ids (array of strings): A list of asset IDs to move.
target_connection_id (integer, optional): The ID of a connection in the target project to associate with the moved assets. If connections used by sources are GLOBAL, this may not be defined, and existing global connections will be preserved. Note: Only connection of the same type can be used

Response

The response confirms the successful movement of assets.

{
  "message": "Assets moved successfully"
}

Note: The user should be a PROJECT_EDITOR in both the source and destination projects to perform this operation.

Asset Payload Formats by Type

The payload structure for assets varies depending on the asset type.

GCP, S3, AZURE:

{
  "path": "folder1/data.parquet",
  "file_type": "CSV"
}

BIGQUERY:

{
  "dataset": "test_dataset",
  "result_dataset": "test_dataset", // optional
  "table": "table1",
  "result_table": "out_table", // optional
  "query": "select * from table1" // optional
}

SNOWFLAKE, REDSHIFT:

{
  "database": "db1",
  "schema": "test_schema",
  "table": "table1",
  "query": "select * from table1" // optional
}

DELTALAKE:

{
  "catalog": "cat1",
  "schema": "test_schema",
  "table": "table1",
  "query": "select * from table1" // optional
}

GENERIC_JDBC:

{
  "table": "table1",
  "query": "select * from table1" // optional
}

HIVE_ICEBERG:

{
  "database": "db1",
  "table": "table1"
}

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