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NucliaDB SDK
The NucliaDB SDK is a Python library designed as a thin wrapper around the NucliaDB HTTP API. It is tailored for developers who wish to create low-level scripts to interact with NucliaDB.
WARNING
⚠ If it's your first time using Nuclia or you want a simple way to push your unstructured data to Nuclia with a script or a CLI, we highly recommend using the Nuclia CLI/SDK instead, as it is much more user-friendly and use-case focused. ⚠
Installation
To install it, simply with pip:
pip install nucliadb-sdk
How to use it?
To connect to a Nuclia-hosted NucliaDB instance, just use the NucliaDB constructor method with the api_key:
from nucliadb_sdk import NucliaDB, Region
ndb = NucliaDB(region=Region.EUROPE1, api_key="my-api-key")
Alternatively, to connect to a NucliaDB local installation, use:
ndb = NucliaDB(region=Region.ON_PREM, api="http://localhost:8080/api")
Then, each method of the NucliaDB class maps to an HTTP endpoint of the NucliaDB API. The parameters it accepts correspond to the Pydantic models associated to the request body scheme of the endpoint.
The method-to-endpoint mappings for the sdk are declared in-code in the _NucliaDBBase class.
For instance, to create a resource in your Knowledge Box, the endpoint is defined here.
It has a {kbid} path parameter and is expecting a json payload with some optional keys like slug or title, that are of type string. With curl, the command would be:
curl -XPOST http://localhost:8080/api/v1/kb/my-kbid/resources -H 'x-nucliadb-roles: WRITER' --data-binary '{"slug":"my-resource","title":"My Resource"}' -H "Content-Type: application/json"
{"uuid":"fbdb10a79abc45c0b13400f5697ea2ba","seqid":1}
and with the NucliaDB sdk:
>>> from nucliadb_sdk import NucliaDB
>>>
>>> ndb = NucliaDB(region="on-prem", url="http://localhost:8080/api")
>>> ndb.create_resource(kbid="my-kbid", slug="my-resource", title="My Resource")
ResourceCreated(uuid='fbdb10a79abc45c0b13400f5697ea2ba', elapsed=None, seqid=1)
Note that paths parameters are mapped as required keyword arguments of the NucliaDB class methods: hence the kbid="my-kbid". Any other keyword arguments specified in the method will be sent along in the json request body of the HTTP request.
Alternatively, you can also define the content parameter and pass an instance of the Pydantic model that the endpoint expects:
>>> from nucliadb_sdk import NucliaDB
>>> from nucliadb_models.writer import CreateResourcePayload
>>>
>>> ndb = NucliaDB(region="on-prem", url="http://localhost:8080/api")
>>> content = CreateResourcePayload(slug="my-resource", title="My Resource")
>>> ndb.create_resource(kbid="my-kbid", content=content)
ResourceCreated(uuid='fbdb10a79abc45c0b13400f5697ea2ba', elapsed=None, seqid=1)
Query parameters can be passed too on each method with the query_params argument. For instance:
>>> ndb.get_resource_by_id(kbid="my-kbid", rid="rid", query_params={"show": ["values"]})
Example Usage
The following is a sample script that fetches the HTML of a website, extracts all links that it finds on it and pushes them to NucliaDB so that they get processed by Nuclia's processing engine.
from nucliadb_models.link import LinkField
from nucliadb_models.writer import CreateResourcePayload
import nucliadb_sdk
import requests
from bs4 import BeautifulSoup
def extract_links_from_url(url):
response = requests.get(url)
soup = BeautifulSoup(response.text, "html.parser")
unique_links = set()
for link in soup.find_all("a"):
unique_links.add(link.get("href"))
return unique_links
def upload_link_to_nuclia(ndb, *, kbid, link, tags):
try:
title = link.replace("-", " ")
slug = "-".join(tags) + "-" + link.split("/")[-1]
content = CreateResourcePayload(
title=title,
slug=slug,
links={
"link": LinkField(
uri=link,
language="en",
)
},
)
ndb.create_resource(kbid=kbid, content=content)
print(f"Resource created from {link}. Title={title} Slug={slug}")
except nucliadb_sdk.exceptions.ConflictError:
print(f"Resource already exists: {link} {slug}")
except Exception as ex:
print(f"Failed to create resource: {link} {slug}: {ex}")
def main(site):
# Define the NucliaDB instance with region and URL
ndb = nucliadb_sdk.NucliaDB(region="on-prem", url="http://localhost:8080")
# Loop through extracted links and upload to NucliaDB
for link in extract_links_from_url(site):
upload_link_to_nuclia(ndb, kbid="my-kb-id", link=link, tags=["news"])
if __name__ == "__main__":
main(site="https://en.wikipedia.org/wiki/The_Lion_King")
After the data is pushed, the NucliaDB SDK could also be used to find answers on top of the extracted links.
>>> import nucliadb_sdk
>>>
>>> ndb = nucliadb_sdk.NucliaDB(region="on-prem", url="http://localhost:8080")
>>> resp = ndb.ask(kbid="my-kb-id", query="What does Hakuna Matata mean?")
>>> print(resp.answer)
'Hakuna matata is actually a phrase in the East African language of Swahili that literally means “no trouble” or “no problems”.'
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