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86 lines
3.7 KiB
Markdown
86 lines
3.7 KiB
Markdown
---
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title: Software Components
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description: Every Ocean network is brought to life by many interacting symbiotic software components.
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---
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Before reading this page, you should understand some [Ocean-specific terminology](/concepts/terminology/).
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## Keeper
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A computer running an EVM-compatible blockchain client
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(such as [Parity Ethereum](https://www.parity.io/ethereum/))
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where the associated blockchain network is running the Ocean Protocol
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[keeper-contracts](https://github.com/oceanprotocol/keeper-contracts)
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(smart contracts).
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<repo name="keeper-contracts"></repo>
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See also: [Run a Keeper](/setup/keeper/)
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## Secret Store
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A [Parity Secret Store](https://wiki.parity.io/Secret-Store): software for distributed key pair generation, distributed key storage, and threshold retrieval. It's used to store [asset](/concepts/terminology/#asset-or-data-asset) access-control keys.
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<repo name="parity-ethereum"></repo>
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There are several clients for integrating the Parity Secret Store into Ocean:
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<repo name="secret-store-client-js"></repo>
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<repo name="secret-store-client-py"></repo>
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<repo name="secret-store-client-java"></repo>
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## Aquarius
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Marketplaces run Aquarius to store and manage metadata about the [assets](/concepts/terminology/#asset-or-data-asset) available in their marketplace. It provides an HTTP API for interacting with an off-chain database (sometimes called "OceanDB").
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<repo name="aquarius"></repo>
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### OceanDB Drivers
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Aquarius supports several options for the off-chain database (OceanDB), including Elasticsearch and MongoDB. One can add support for another off-chain database by creating a new driver similar to the existing OceanDB drivers.
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<repo name="oceandb-elasticsearch-driver"></repo>
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<repo name="oceandb-mongodb-driver"></repo>
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Note: There is also a BigchainDB driver but it hasn't been maintained.
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## Brizo
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Publishers run Brizo to manage interactions with marketplaces and consumers.
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It interacts with the publisher's cloud and/or on-premise infrastructure.
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The most basic scenario for a publisher is to provide access to the [assets](/concepts/terminology/#asset-or-data-asset) the publisher owns or manages, but [Brizo can do much more](/concepts/architecture/#brizo).
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<repo name="brizo"></repo>
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### Osmosis Drivers
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Brizo supports several options for file storage, including Azure Storage, Amazon S3 and on-premise storage. One can add support for another file storage option by creating a new driver similar to one of the existing Osmosis drivers.
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<repo name="osmosis-azure-driver"></repo>
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<repo name="osmosis-aws-driver"></repo>
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<repo name="osmosis-on-premise-driver"></repo>
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## Squid Libraries
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Client libraries used by applications (such as Pleuston or Jupyter notebooks) to interact with Ocean components, including Keepers, Aquarius nodes, Brizo nodes, etc.
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<repo name="squid-js"></repo>
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<repo name="squid-py"></repo>
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<repo name="squid-java"></repo>
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## Pleuston
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An example marketplace/publisher front-end for developers to explore, download, and publish [assets](/concepts/terminology/#asset-or-data-asset) in an Ocean Protocol network. Implemented using [React](https://reactjs.org/) and [squid-js](https://github.com/oceanprotocol/squid-js).
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<repo name="pleuston"></repo>
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## Commons Marketplace
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An online example marketplace/publisher for consumers to explore, download, and publish open data sets in the [Pacific Network](/concepts/pacific-network/). Implemented using [React](https://reactjs.org/) and [squid-js](https://github.com/oceanprotocol/squid-js).
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For more information, see [the blog post about Commons Marketplace](https://blog.oceanprotocol.com/the-commons-data-marketplace-c57a44288314).
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<repo name="commons"></repo>
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