How to Build an ETL App for Marketo Data in Python with CData Connect AI

The rich ecosystem of Python modules lets you get to work quickly and integrate your systems more effectively. With the CData Connect AI Python SDK and the petl framework, you can build Marketo-connected applications and pipelines for extracting, transforming, and loading Marketo data. This article shows how to connect to Connect AI and use petl to extract, transform, and load Marketo data.

The Connect AI Python SDK (cdata-connect-ai) is a DB-API 2.0 (PEP 249) compliant client, so petl can read directly from the SDK connection with etl.fromdb. There is no driver to install per source: connect with a Personal Access Token and build your pipeline.

Connect to Marketo in Connect AI

CData Connect AI uses a straightforward, point-and-click interface to connect to data sources.

1. Log into Connect AI, click Sources, and then click Add Connection

2. Select "Marketo" from the Add Connection panel

3. Enter the necessary authentication properties to connect to Marketo.

   Both the REST and SOAP APIs are supported and can be chosen by using the Schema property.

   For the REST API: The OAuthClientId, OAuthClientSecret, and RESTEndpoint properties, under the OAuth and REST Connection sections, must be set to valid Marketo user credentials.

   For the SOAP API: The UserId, EncryptionKey, and SOAPEndpoint properties, under the SOAP Connection section, must be set to valid Marketo user credentials.

   See the "Getting Started" chapter of the help documentation for a guide to obtaining these values.

   
4. Click Save & Test
5. Navigate to the Permissions tab and update the user-based permissions.

Generate a Personal Access Token (PAT)

The Python SDK authenticates to Connect AI with your account email and a Personal Access Token (PAT). It is best practice to create a separate PAT for each application to maintain granularity of access.

1. Click the Gear icon () at the top right of the Connect AI app to open the Settings page.
2. On the Settings page, go to the Access Tokens section and click Create PAT.
3. Give the PAT a name and click Create.
4. The PAT is only visible at creation, so copy it and store it securely.

Install Required Modules

Install the SDK and the petl framework using the pip utility:

pip install cdata-connect-ai
pip install petl

Build an ETL App for Marketo Data in Python

Once the required modules are installed, you are ready to build the ETL app. Code snippets follow, but the full source code is available at the end of the article.

First, import the modules and connect to Connect AI with your account email and PAT:

import petl as etl
import cdata_connect_ai

conn = cdata_connect_ai.connect(
    username="[email protected]",
    password="<your_pat>",
)

Create a SQL Statement to Query Marketo

Use SQL to create a statement for querying Marketo. In this article, we read data from the Leads entity. Identifiers are three-part: <Connection>.<Schema>.<Table>, where the connection name defaults to the source name (for example, Marketo1).

sql = (
    "SELECT Email, AnnualRevenue "
    "FROM [Marketo1].[Marketo].[Leads] "
    "WHERE Country = 'U.S.A.'"
)

Extract, Transform, and Load the Marketo Data

With a connection and query in hand, use petl to extract, transform, and load the Marketo data. In this example, we extract Marketo data, sort the data by the AnnualRevenue column, and load the data into a CSV file.

table1 = etl.fromdb(conn, sql)

table2 = etl.sort(table1, 'AnnualRevenue')

etl.tocsv(table2, 'leads_data.csv')

Load New Rows Back into Marketo

When Marketo supports writes, load rows back with a batch INSERT. The SDK's executemany takes @name placeholders and a list of parameter dictionaries, one per row.

cur = conn.cursor()
cur.executemany(
    "INSERT INTO [Marketo1].[Marketo].[Leads] (Email, AnnualRevenue) "
    "VALUES (@val1, @val2)",
    [
        {"@val1": "New value 1", "@val2": "New value 1"},
        {"@val1": "New value 2", "@val2": "New value 2"},
    ],
)
print(f"Rows inserted: {cur.rowcount}")

conn.close()

Note: Even for writable sources, a read-only PAT or connection permission will reject write operations.

With the CData Connect AI Python SDK, you can work with Marketo data just like you would with any database, including direct access to data in ETL packages like petl.

More Information and Free Trial

Now you can pipe live Marketo data through petl using the CData Connect AI Python SDK. For more information on connecting to Marketo (and hundreds of other data sources), visit the Connect AI page. Sign up for a free trial and start building data pipelines for live Marketo data in Python.

Full Source Code

import petl as etl
import cdata_connect_ai

conn = cdata_connect_ai.connect(
    username="[email protected]",
    password="<your_pat>",
)

sql = (
    "SELECT Email, AnnualRevenue "
    "FROM [Marketo1].[Marketo].[Leads] "
    "WHERE Country = 'U.S.A.'"
)

table1 = etl.fromdb(conn, sql)

table2 = etl.sort(table1, 'AnnualRevenue')

etl.tocsv(table2, 'leads_data.csv')

cur = conn.cursor()
cur.executemany(
    "INSERT INTO [Marketo1].[Marketo].[Leads] (Email, AnnualRevenue) "
    "VALUES (@val1, @val2)",
    [
        {"@val1": "New value 1", "@val2": "New value 1"},
        {"@val1": "New value 2", "@val2": "New value 2"},
    ],
)
print(f"Rows inserted: {cur.rowcount}")
conn.close()