OIC How to use OCI Object storage from the Oracle Integration Cloud | Put a file to OCI Object storage from Oracle Integration Cloud

UseCase: Here, we will create a OCI object storage bucket. From OIC, read a file and put that file to bucket using Rest connection.

Step 1 : Create a bucket in OCI object storage

In the Oracle console >> Storage >> object storage & Archive storage >> select the required compartment >> create bucket

Step 2 : Create a Object storage Rest connection

To create a Rest connection , we need to collect the following information:

Connection type : REST API Base URL

Connection URL : https://objectstorage.<region>.oraclecloud.com

My case, region is: us-ashburn-1

Securtity: OCI Signature Version 1

Tenancy OCID and Object storage Namespace: get the Tenancy OCID from the OCI console on the Tenancy Details page.

Search Tenancy in the search box

Or from profile >> Tennacy

Here we also got the Object storage namespace.

User OCID : get the user's OCID in the console on the User details page.

Profile >> User Settings

Private Key & FingerPrint: 

Profile >> User settings >> API Keys >> Add API Key >> download private key >> add >> note the fingerprint.

Oracle home >> Integrations >> Connections >> Create >> Rest 

Test and save.

Step 3:  Create the Integration

Integration flow:

Read the file 

Call the rest connection to put the file to object storage

URI: /n/{namespaceName}/b/{bucketName}/o/{objectName}

Verb: PUT

Configure Request Payload as Binary Format.

Map the namespace, bucket name, object name and fileReference to stream reference.

Save, Add Tracking and activate and test

See the below file uploaded to object storage bucket.

Note: Private key downloaded from the Oracle Cloud Infrastructure Console are in PKCS8 format. The OCI Signature version 1 security policy available with the Rest adapter only supports reading of the private key in RSA format(PKCS1) format.

If you receive the following error, you must convert the private key from PKCS8 to RSA(PKC1) format:

oracle.cloud.connector.impl.rest.security.signature.signatureException: java.lang.ClassCastException: org.bouncycastle.asn1.pkcs.PrivateKeyInfo can not be cast to org.bouncycastle.openssl.PEMKeyPair.

Convert the private key with the following command:

openssl rsa -in private_key_in_pkcs8_format.pem -out new_converted_file.pem

We can also convert it using online availavle site like below:

https://8gwifi.org/pemconvert.jsp

Reference:

https://blogs.oracle.com/integration/post/how-to-use-the-oci-object-storage-from-the-oracle-integration-cloud