docs: Add README to the repo. (#7)

* docs: Add README to the repo. * Update README.rst * Update README.rst * Update README.rst --------- Co-authored-by: Averi Kitsch <akitsch@google.com>

Author: dishaprakash

README.rst

@@ -1,27 +1,172 @@
-# Cloud SQL Postgres for Llama Index
+Cloud SQL for PostgreSQL for LlamaIndex
+==================================================
 
-[![Open in Cloud Shell](https://gstatic.com/cloudssh/images/open-btn.svg)](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=GITHUB_URL)
+|preview| |pypi| |versions|
 
-*Description*
+- `Product Documentation`_
 
-> **🧪 Preview:** Any notes about stability or launch stage.
+The **Cloud SQL for PostgreSQL for LlamaIndex** package provides a first class experience for connecting to
+Cloud SQL instances from the LlamaIndex ecosystem while providing the following benefits:
 
-## Features
+- **Simplified & Secure Connections**: easily and securely create shared connection pools to connect to Google Cloud databases utilizing IAM for authorization and database authentication without needing to manage SSL certificates, configure firewall rules, or enable authorized networks.
+- **Improved metadata handling**: store metadata in columns instead of JSON, resulting in significant performance improvements.
+- **Clear separation**: clearly separate table and extension creation, allowing for distinct permissions and streamlined workflows.
 
-## Getting Started
+.. |preview| image:: https://img.shields.io/badge/support-preview-orange.svg
+ :target: https://github.com/googleapis/google-cloud-python/blob/main/README.rst#stability-levels
+.. |pypi| image:: https://img.shields.io/pypi/v/llama-index-cloud-sql-pg.svg
+ :target: https://pypi.org/project/llama-index-cloud-sql-pg/
+.. |versions| image:: https://img.shields.io/pypi/pyversions/llama-index-cloud-sql-pg.svg
+ :target: https://pypi.org/project/llama-index-cloud-sql-pg/
+.. _Product Documentation: https://cloud.google.com/sql/docs
 
-### Prerequisites
+Quick Start
+-----------
 
-## Contributing
+In order to use this library, you first need to go through the following
+steps:
+
+1. `Select or create a Cloud Platform project.`_
+2. `Enable billing for your project.`_
+3. `Enable the Cloud SQL Admin API.`_
+4. `Setup Authentication.`_
+
+.. _Select or create a Cloud Platform project.: https://console.cloud.google.com/project
+.. _Enable billing for your project.: https://cloud.google.com/billing/docs/how-to/modify-project#enable_billing_for_a_project
+.. _Enable the Cloud SQL Admin API.: https://console.cloud.google.com/flows/enableapi?apiid=sqladmin.googleapis.com
+.. _Setup Authentication.: https://googleapis.dev/python/google-api-core/latest/auth.html
+
+Installation
+~~~~~~~~~~~~
+
+Install this library in a `virtualenv`_ using pip. `virtualenv`_ is a tool to create isolated Python environments. The basic problem it addresses is
+one of dependencies and versions, and indirectly permissions.
+
+With `virtualenv`_, it's
+possible to install this library without needing system install
+permissions, and without clashing with the installed system
+dependencies.
+
+.. _`virtualenv`: https://virtualenv.pypa.io/en/latest/
+
+Supported Python Versions
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Python >= 3.9
+
+Mac/Linux
+^^^^^^^^^
+
+.. code-block:: console
+
+ pip install virtualenv
+ virtualenv <your-env>
+ source <your-env>/bin/activate
+ <your-env>/bin/pip install llama-index-cloud-sql-pg
+
+Windows
+^^^^^^^
+
+.. code-block:: console
+
+ pip install virtualenv
+ virtualenv <your-env>
+ <your-env>\Scripts\activate
+ <your-env>\Scripts\pip.exe install llama-index-cloud-sql-pg
+
+Example Usage
+-------------
+
+Code samples and snippets live in the `samples/`_ folder.
+
+.. _samples/: https://github.com/googleapis/llama-index-cloud-sql-pg-python/tree/main/samples
+
+Vector Store Usage
+~~~~~~~~~~~~~~~~~~~
+
+Use a vector store to store embedded data and perform vector search.
+
+.. code-block:: python
+
+ import google.auth
+ from llama_index.core import Settings
+ from llama_index.embeddings.vertex import VertexTextEmbedding
+ from llama_index_cloud_sql_pg import PostgresEngine, PostgresVectorStore
+
+
+ credentials, project_id = google.auth.default()
+ engine = await PostgresEngine.afrom_instance(
+ "project-id", "region", "my-cluster", "my-instance", "my-database"
+ )
+ Settings.embed_model = VertexTextEmbedding(
+ model_name="textembedding-gecko@003",
+ project="project-id",
+ credentials=credentials,
+ )
+
+ vector_store = await PostgresVectorStore.create(
+ engine=engine, table_name="vector_store"
+ )
+
+
+Document Store Usage
+~~~~~~~~~~~~~~~~~~~~~
+
+Use a document store to make storage and maintenance of data easier.
+
+.. code-block:: python
+
+ from llama_index_cloud_sql_pg import PostgresEngine, PostgresDocumentStore
+
+
+ engine = await PostgresEngine.afrom_instance(
+ "project-id", "region", "my-cluster", "my-instance", "my-database"
+ )
+ doc_store = await PostgresDocumentStore.create(
+ engine=engine, table_name="doc_store"
+ )
+
+
+Index Store Usage
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Use an index store to keep track of indexes built on documents.
+
+.. code:: python
+
+ from llama_index_cloud_sql_pg import PostgresIndexStore, PostgresEngine
+
+
+ engine = await PostgresEngine.from_instance(
+ "project-id", "region", "my-cluster", "my-instance", "my-database"
+ )
+ index_store = await PostgresIndexStore.create(
+ engine=engine, table_name="index_store"
+ )
+
+
+Contributions
+~~~~~~~~~~~~~
 
 Contributions to this library are always welcome and highly encouraged.
 
-See [CONTRIBUTING](CONTRIBUTING.md) for more information how to get started.
+See `CONTRIBUTING`_ for more information how to get started.
 
 Please note that this project is released with a Contributor Code of Conduct. By participating in
-this project you agree to abide by its terms. See [Code of Conduct](CODE_OF_CONDUCT.md) for more
+this project you agree to abide by its terms. See `Code of Conduct`_ for more
 information.
 
-## License
+.. _`CONTRIBUTING`: https://github.com/googleapis/llama-index-cloud-sql-pg-python/tree/main/CONTRIBUTING.md
+.. _`Code of Conduct`: https://github.com/googleapis/llama-index-cloud-sql-pg-python/tree/main/CODE_OF_CONDUCT.md
+
+License
+-------
+
+Apache 2.0 - See
+`LICENSE <https://github.com/googleapis/llama-index-cloud-sql-pg-python/tree/main/LICENSE>`_
+for more information.
+
+Disclaimer
+----------
 
-Apache 2.0 - See [LICENSE](LICENSE) for more information.
+This is not an officially supported Google product.