144 lines
6.2 KiB
Markdown
144 lines
6.2 KiB
Markdown
# Codex Decentralized Durability Engine
|
|
|
|
> The Codex project aims to create a decentralized durability engine that allows persisting data in p2p networks. In other words, it allows storing files and data with predictable durability guarantees for later retrieval.
|
|
|
|
> WARNING: This project is under active development and is considered pre-alpha.
|
|
|
|
[](https://opensource.org/licenses/Apache-2.0)
|
|
[](https://opensource.org/licenses/MIT)
|
|
[](#stability)
|
|
[](https://github.com/status-im/nim-codex/actions?query=workflow%3ACI+branch%3Amain)
|
|
[](https://codecov.io/gh/status-im/nim-codex)
|
|
[](https://discord.gg/CaJTh24ddQ)
|
|
|
|
|
|
## Build and Run
|
|
|
|
For detailed instructions on preparing to build nim-codex see [*Building Codex*](BUILDING.md).
|
|
|
|
To build the project, clone it and run:
|
|
|
|
```bash
|
|
make update && make exec
|
|
```
|
|
|
|
The executable will be placed under the `build` directory under the project root.
|
|
|
|
Run the client with:
|
|
|
|
```bash
|
|
build/codex
|
|
```
|
|
|
|
### CLI Options
|
|
|
|
```
|
|
build/codex --help
|
|
Usage:
|
|
|
|
codex [OPTIONS]... command
|
|
|
|
The following options are available:
|
|
|
|
--log-level Sets the log level [=LogLevel.INFO].
|
|
--metrics Enable the metrics server [=false].
|
|
--metrics-address Listening address of the metrics server [=127.0.0.1].
|
|
--metrics-port Listening HTTP port of the metrics server [=8008].
|
|
-d, --data-dir The directory where codex will store configuration and data..
|
|
-l, --listen-port Specifies one or more listening ports for the node to listen on. [=0].
|
|
-i, --listen-ip The public IP [=0.0.0.0].
|
|
--udp-port Specify the discovery (UDP) port [=8090].
|
|
--net-privkey Source of network (secp256k1) private key file (random|<path>) [=random].
|
|
-b, --bootstrap-node Specifies one or more bootstrap nodes to use when connecting to the network..
|
|
--max-peers The maximum number of peers to connect to [=160].
|
|
--agent-string Node agent string which is used as identifier in network [=Codex].
|
|
-p, --api-port The REST Api port [=8080].
|
|
-c, --cache-size The size in MiB of the block cache, 0 disables the cache [=100].
|
|
--persistence Enables persistence mechanism, requires an Ethereum node [=false].
|
|
--eth-provider The URL of the JSON-RPC API of the Ethereum node [=ws://localhost:8545].
|
|
--eth-account The Ethereum account that is used for storage contracts [=EthAddress.none].
|
|
--eth-deployment The json file describing the contract deployment [=string.none].
|
|
|
|
Available sub-commands:
|
|
|
|
codex initNode
|
|
```
|
|
|
|
### Example: running two Codex clients
|
|
|
|
```bash
|
|
build/codex --data-dir="$(pwd)/Codex1" -i=127.0.0.1
|
|
```
|
|
|
|
This will start codex with a data directory pointing to `Codex1` under the current execution directory and announce itself on the DHT under `127.0.0.1`.
|
|
|
|
To run a second client that automatically discovers nodes on the network, we need to get the Signed Peer Record (SPR) of first client, Client1. We can do this by querying the `/info` endpoint of the node's REST API.
|
|
|
|
`curl http://127.0.0.1:8080/api/codex/v1/info`
|
|
|
|
This should output information about Client1, including its PeerID, TCP/UDP addresses, data directory, and SPR:
|
|
|
|
```json
|
|
{
|
|
"id": "16Uiu2HAm92LGXYTuhtLaZzkFnsCx6FFJsNmswK6o9oPXFbSKHQEa",
|
|
"addrs": [
|
|
"/ip4/0.0.0.0/udp/8090",
|
|
"/ip4/0.0.0.0/tcp/49336"
|
|
],
|
|
"repo": "/repos/status-im/nim-codex/Codex1",
|
|
"spr": "spr:CiUIAhIhAmqg5fVU2yxPStLdUOWgwrkWZMHW2MHf6i6l8IjA4tssEgIDARpICicAJQgCEiECaqDl9VTbLE9K0t1Q5aDCuRZkwdbYwd_qLqXwiMDi2ywQ5v2VlAYaCwoJBH8AAAGRAh-aGgoKCAR_AAABBts3KkcwRQIhAPOKl38CviplVbMVnA_9q3N1K_nk5oGuNp7DWeOqiJzzAiATQ2acPyQvPxLU9YS-TiVo4RUXndRcwMFMX2Yjhw8k3A"
|
|
}
|
|
```
|
|
|
|
Now, let's start a second client, Client2. Because we're already using the default ports TCP (:8080) and UDP (:8090) for the first client, we have to specify new ports to avoid a collision. Additionally, we can specify the SPR from Client1 as the bootstrap node for discovery purposes, allowing Client2 to determine where content is located in the network.
|
|
|
|
```bash
|
|
build/codex --data-dir="$(pwd)/Codex2" -i=127.0.0.1 --api-port=8081 --udp-port=8091 --bootstrap-node=spr:CiUIAhIhAmqg5fVU2yxPStLdUOWgwrkWZMHW2MHf6i6l8IjA4tssEgIDARpICicAJQgCEiECaqDl9VTbLE9K0t1Q5aDCuRZkwdbYwd_qLqXwiMDi2ywQ5v2VlAYaCwoJBH8AAAGRAh-aGgoKCAR_AAABBts3KkcwRQIhAPOKl38CviplVbMVnA_9q3N1K_nk5oGuNp7DWeOqiJzzAiATQ2acPyQvPxLU9YS-TiVo4RUXndRcwMFMX2Yjhw8k3A
|
|
```
|
|
|
|
There are now two clients running. We could upload a file to Client1 and download that file (given its CID) using Client2, by using the clients' REST API.
|
|
|
|
## Interacting with the client
|
|
|
|
The client exposes a REST API that can be used to interact with the clients. These commands could be invoked with any HTTP client, however the following endpoints assume the use of the `curl` command.
|
|
|
|
### `/api/codex/v1/connect/{peerId}`
|
|
|
|
Connect to a peer identified by its peer id. Takes an optional `addrs` parameter with a list of valid [multiaddresses](https://multiformats.io/multiaddr/). If `addrs` is absent, the peer will be discovered over the DHT.
|
|
|
|
Example:
|
|
|
|
```bash
|
|
curl "127.0.0.1:8080/api/codex/v1/connect/<peer id>?addrs=<multiaddress>"
|
|
```
|
|
|
|
### `/api/codex/v1/download/{id}`
|
|
|
|
Download data identified by a `Cid`.
|
|
|
|
Example:
|
|
|
|
```bash
|
|
curl -vvv "127.0.0.1:8080/api/codex/v1/download/<Cid of the content>" --output <name of output file>
|
|
```
|
|
|
|
### `/api/codex/v1/upload`
|
|
|
|
Upload a file, upon success returns the `Cid` of the uploaded file.
|
|
|
|
Example:
|
|
|
|
```bash
|
|
curl -vvv -H "content-type: application/octet-stream" -H Expect: -T "127.0.0.1:8080/api/codex/v1/upload" -X POST "<path to file>"
|
|
```
|
|
|
|
### `/api/codex/v1/info`
|
|
|
|
Get useful node info such as its peer id, address and SPR.
|
|
|
|
Example:
|
|
|
|
```bash
|
|
curl -vvv "127.0.0.1:8080/api/codex/v1/info"
|
|
```
|