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## Scribe
## LBRY Hub
Scribe is a python library for building services that use the processed data from the [LBRY blockchain](https://github.com/lbryio/lbrycrd) in an ongoing manner. Scribe contains a set of three core executable services that are used together:
* `scribe` ([scribe.blockchain.service](https://github.com/lbryio/scribe/tree/master/scribe/blockchain/service.py)) - maintains a [rocksdb](https://github.com/lbryio/lbry-rocksdb) database containing the LBRY blockchain.
* `scribe-hub` ([scribe.hub.service](https://github.com/lbryio/scribe/tree/master/scribe/hub/service.py)) - an electrum server for thin-wallet clients (such as [lbry-sdk](https://github.com/lbryio/lbry-sdk)), provides an api for clients to use thin simple-payment-verification (spv) wallets and to resolve and search claims published to the LBRY blockchain.
* `scribe-elastic-sync` ([scribe.elasticsearch.service](https://github.com/lbryio/scribe/tree/master/scribe/elasticsearch/service.py)) - a utility to maintain an elasticsearch database of metadata for claims in the LBRY blockchain
This repo provides a python library, `hub`, for building services that use the processed data from the [LBRY blockchain](https://github.com/lbryio/lbrycrd) in an ongoing manner. Hub contains a set of three core executable services that are used together:
* `scribe` ([hub.scribe.service](https://github.com/lbryio/lbry-hub/tree/master/hub/service.py)) - maintains a [rocksdb](https://github.com/lbryio/lbry-rocksdb) database containing the LBRY blockchain.
* `herald` ([hub.herald.service](https://github.com/lbryio/lbry-hub/tree/master/hub/herald/service.py)) - an electrum server for thin-wallet clients (such as [lbry-sdk](https://github.com/lbryio/lbry-sdk)), provides an api for clients to use thin simple-payment-verification (spv) wallets and to resolve and search claims published to the LBRY blockchain.
* `scribe-elastic-sync` ([hub.elastic_sync.service](https://github.com/lbryio/lbry-hub/tree/master/hub/elastic_sync/service.py)) - a utility to maintain an elasticsearch database of metadata for claims in the LBRY blockchain
Features and overview of scribe as a python library:
Features and overview of `hub` as a python library:
* Uses Python 3.7-3.9 (3.10 probably works but hasn't yet been tested)
* An interface developers may implement in order to build their own applications able to receive up-to-date blockchain data in an ongoing manner ([scribe.service.BlockchainReaderService](https://github.com/lbryio/scribe/tree/master/scribe/service.py))
* Protobuf schema for encoding and decoding metadata stored on the blockchain ([scribe.schema](https://github.com/lbryio/scribe/tree/master/scribe/schema))
* [Rocksdb 6.25.3](https://github.com/lbryio/lbry-rocksdb/) based database containing the blockchain data ([scribe.db](https://github.com/lbryio/scribe/tree/master/scribe/db))
* [A community driven performant trending algorithm](https://raw.githubusercontent.com/lbryio/scribe/master/scribe/elasticsearch/trending%20algorithm.pdf) for searching claims ([code](https://github.com/lbryio/scribe/blob/master/scribe/elasticsearch/fast_ar_trending.py))
* An interface developers may implement in order to build their own applications able to receive up-to-date blockchain data in an ongoing manner ([hub.service.BlockchainReaderService](https://github.com/lbryio/lbry-hub/tree/master/hub/service.py))
* Protobuf schema for encoding and decoding metadata stored on the blockchain ([hub.schema](https://github.com/lbryio/lbry-hub/tree/master/hub/schema))
* [Rocksdb 6.25.3](https://github.com/lbryio/lbry-rocksdb/) based database containing the blockchain data ([hub.db](https://github.com/lbryio/lbry-hub/tree/master/hub/db))
* [A community driven performant trending algorithm](https://raw.githubusercontent.com/lbryio/lbry-hub/master/docs/trending%20algorithm.pdf) for searching claims ([code](https://github.com/lbryio/lbry-hub/blob/master/hub/elastic_sync/fast_ar_trending.py))
## Installation
Scribe may be run from source, a binary, or a docker image.
Our [releases page](https://github.com/lbryio/scribe/releases) contains pre-built binaries of the latest release, pre-releases, and past releases for macOS and Debian-based Linux.
Prebuilt [docker images](https://hub.docker.com/r/lbry/scribe/latest-release) are also available.
Our [releases page](https://github.com/lbryio/lbry-hub/releases) contains pre-built binaries of the latest release, pre-releases, and past releases for macOS and Debian-based Linux.
Prebuilt [docker images](https://hub.docker.com/r/lbry/lbry-hub/latest-release) are also available.
### Prebuilt docker image
`docker pull lbry/scribe:latest-release`
`docker pull lbry/lbry-hub:latest-release`
### Build your own docker image
```
git clone https://github.com/lbryio/scribe.git
cd scribe
docker build -f ./docker/Dockerfile.scribe -t lbry/scribe:development .
git clone https://github.com/lbryio/lbry-hub.git
cd lbry-hub
docker build -t lbry/lbry-hub:development .
```
### Install from source
@ -36,22 +36,22 @@ Scribe has been tested with python 3.7-3.9. Higher versions probably work but ha
1. clone the scribe repo
```
git clone https://github.com/lbryio/scribe.git
cd scribe
git clone https://github.com/lbryio/lbry-hub.git
cd lbry-hub
```
2. make a virtual env
```
python3.9 -m venv scribe-venv
python3.9 -m venv lbry-hub-venv
```
3. from the virtual env, install scribe
```
source scribe-venv/bin/activate
source lbry-hub-venv/bin/activate
pip install -e .
```
That completes the installation, now you should have the commands `scribe`, `scribe-elastic-sync` and `scribe-hub`
That completes the installation, now you should have the commands `scribe`, `scribe-elastic-sync` and `herald`
These can also optionally be run with `python -m scribe.blockchain`, `python -m scribe.elasticsearch`, and `python -m scribe.hub`
These can also optionally be run with `python -m hub.scribe`, `python -m hub.elastic_sync`, and `python -m hub.herald`
## Usage
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For various reasons it may be desirable to block or filtering content from claim search and resolve results, [here](https://github.com/lbryio/scribe/blob/master/blocking.md) are instructions for how to configure and use this feature as well as information about the recommended defaults.
#### Common options across `scribe`, `scribe-hub`, and `scribe-elastic-sync`:
#### Common options across `scribe`, `herald`, and `scribe-elastic-sync`:
- `--db_dir` (required) Path of the directory containing lbry-rocksdb, set from the environment with `DB_DIRECTORY`
- `--daemon_url` (required for `scribe` and `scribe-hub`) URL for rpc from lbrycrd or lbcd<rpcuser>:<rpcpassword>@<lbrycrd rpc ip><lbrycrd rpc port>.
- `--daemon_url` (required for `scribe` and `herald`) URL for rpc from lbrycrd or lbcd<rpcuser>:<rpcpassword>@<lbrycrd rpc ip><lbrycrd rpc port>.
- `--reorg_limit` Max reorg depth, defaults to 200, set from the environment with `REORG_LIMIT`.
- `--chain` With blockchain to use - either `mainnet`, `testnet`, or `regtest` - set from the environment with `NET`
- `--max_query_workers` Size of the thread pool, set from the environment with `MAX_QUERY_WORKERS`
- `--cache_all_tx_hashes` If this flag is set, all tx hashes will be stored in memory. For `scribe`, this speeds up the rate it can apply blocks as well as process mempool. For `scribe-hub`, this will speed up syncing address histories. This setting will use 10+g of memory. It can be set from the environment with `CACHE_ALL_TX_HASHES=Yes`
- `--cache_all_tx_hashes` If this flag is set, all tx hashes will be stored in memory. For `scribe`, this speeds up the rate it can apply blocks as well as process mempool. For `herald`, this will speed up syncing address histories. This setting will use 10+g of memory. It can be set from the environment with `CACHE_ALL_TX_HASHES=Yes`
- `--cache_all_claim_txos` If this flag is set, all claim txos will be indexed in memory. Set from the environment with `CACHE_ALL_CLAIM_TXOS=Yes`
- `--prometheus_port` If provided this port will be used to provide prometheus metrics, set from the environment with `PROMETHEUS_PORT`
@ -94,7 +94,7 @@ For various reasons it may be desirable to block or filtering content from claim
#### Options for `scribe-elastic-sync`
- `--reindex` If this flag is set drop and rebuild the elasticsearch index.
#### Options for `scribe-hub`
#### Options for `herald`
- `--host` Interface for server to listen on, use 0.0.0.0 to listen on the external interface. Can be set from the environment with `HOST`
- `--tcp_port` Electrum TCP port to listen on for hub server. Can be set from the environment with `TCP_PORT`
- `--udp_port` UDP port to listen on for hub server. Can be set from the environment with `UDP_PORT`