84 lines
2.6 KiB
Markdown
84 lines
2.6 KiB
Markdown
# Mercator Workspace
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This repository references everything needed to build various tools related to the Spatial Index.
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## Mercator: Spatial Index
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**Mercator** is a spatial *volumetric* index for the [Human Brain Project](http://www.humanbrainproject.eu). It is a component of the [Knowledge Graph](http://www.humanbrainproject.eu/en/explore-the-brain/search/) service, which provides the spatial anchoring for the metadata registered as well as processes the volumetric queries.
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It is build on top of the Iron Sea database toolkit.
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## Iron Sea: Database Toolkit
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**Iron Sea** provides a set of database engine bricks, which can be combined and applied on arbitrary data structures.
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Unlike a traditional database, it does not assume a specific physical structure for the tables nor the records, but relies on the developper to provide a set of extractor functions which are used by the specific indices provided.
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This enables the index implementations to be agnostic from the underlying data structure, and re-used.
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## Requirements
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### Software
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* Rust: https://www.rust-lang.org
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## Quick start
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* Clone the workspace, which will take care of bringing all the repositories needed.
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```sh
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git clone --recurse <repository URI>
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```
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The following steps assume the working directory is the root of the mercator repository.
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* **[Optional]** Create 3 datasets, of 1, 10 and 100 features respectively, each with 1000 positions:
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```sh
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cd mercator_data_generator
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cargo run --release -- 1 10 100
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```
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* Link the data in the indexer folder (It has to be in the current working directory when calling the indexer):
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```sh
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cd mercator_indexer
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for f in ../mercator_data_generator/1*.json
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do
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ln -s $f
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done
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```
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* Index the data:
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```sh
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cargo run --release -- 1k 10k 100k
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```
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* Run the Spatial Index, while providing the path to the datasets.
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```sh
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cd mercator_service
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RUST_LOG="warn,actix_web=info,mercator_service=trace" \
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MERCATOR_DATA="../mercator_indexer/" \
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MERCATOR_ALLOWED_ORIGINS="http://localhost:3200" \
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cargo run --release
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```
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## Documentation
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For more information, please refer to the [documentation](https://epfl-dias.github.io/mercator/).
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If you want to build the documentation and access it locally, you can use:
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```sh
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cargo doc --open
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```
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## Acknowledgements
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This open source software code was developed in part or in whole in the
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Human Brain Project, funded from the European Union’s Horizon 2020
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Framework Programme for Research and Innovation under the Specific Grant
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Agreement No. 785907 (Human Brain Project SGA2).
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