dab
说明： Cardano.的去中心化应用程序后端。，
(Decentralized applicaton backend for Cardano.,)
(Decentralized applicaton backend for Cardano.,)
文件列表:
.envrc (8, 2022-06-07)
.stylish-haskell.yaml (12936, 2022-06-07)
CODE_OF_CONDUCT.md (5228, 2022-06-07)
CONTRIBUTING.md (2407, 2022-06-07)
LICENSE (11357, 2022-06-07)
blockfrost-freer-client/ (0, 2022-06-07)
blockfrost-freer-client/CHANGELOG.md (217, 2022-06-07)
blockfrost-freer-client/LICENSE (554, 2022-06-07)
blockfrost-freer-client/Setup.hs (46, 2022-06-07)
blockfrost-freer-client/blockfrost-freer-client.cabal (2461, 2022-06-07)
blockfrost-freer-client/example/ (0, 2022-06-07)
blockfrost-freer-client/example/Main.hs (1635, 2022-06-07)
blockfrost-freer-client/src/ (0, 2022-06-07)
blockfrost-freer-client/src/Blockfrost/ (0, 2022-06-07)
blockfrost-freer-client/src/Blockfrost/Freer/ (0, 2022-06-07)
blockfrost-freer-client/src/Blockfrost/Freer/Client.hs (2060, 2022-06-07)
cabal.project (979, 2022-06-07)
chain-watcher/ (0, 2022-06-07)
chain-watcher/CHANGELOG.md (217, 2022-06-07)
chain-watcher/LICENSE (554, 2022-06-07)
chain-watcher/Setup.hs (46, 2022-06-07)
chain-watcher/app/ (0, 2022-06-07)
chain-watcher/app/Main.hs (75, 2022-06-07)
chain-watcher/chain-watcher.cabal (4207, 2022-06-07)
chain-watcher/src/ (0, 2022-06-07)
chain-watcher/src/ChainWatcher.hs (12966, 2022-06-07)
chain-watcher/src/ChainWatcher/ (0, 2022-06-07)
chain-watcher/src/ChainWatcher/Api.hs (1171, 2022-06-07)
chain-watcher/src/ChainWatcher/Lens.hs (203, 2022-06-07)
chain-watcher/src/ChainWatcher/OpenApi.hs (2726, 2022-06-07)
chain-watcher/src/ChainWatcher/OpenApi/ (0, 2022-06-07)
chain-watcher/src/ChainWatcher/OpenApi/Util.hs (1798, 2022-06-07)
... ...
.stylish-haskell.yaml (12936, 2022-06-07)
CODE_OF_CONDUCT.md (5228, 2022-06-07)
CONTRIBUTING.md (2407, 2022-06-07)
LICENSE (11357, 2022-06-07)
blockfrost-freer-client/ (0, 2022-06-07)
blockfrost-freer-client/CHANGELOG.md (217, 2022-06-07)
blockfrost-freer-client/LICENSE (554, 2022-06-07)
blockfrost-freer-client/Setup.hs (46, 2022-06-07)
blockfrost-freer-client/blockfrost-freer-client.cabal (2461, 2022-06-07)
blockfrost-freer-client/example/ (0, 2022-06-07)
blockfrost-freer-client/example/Main.hs (1635, 2022-06-07)
blockfrost-freer-client/src/ (0, 2022-06-07)
blockfrost-freer-client/src/Blockfrost/ (0, 2022-06-07)
blockfrost-freer-client/src/Blockfrost/Freer/ (0, 2022-06-07)
blockfrost-freer-client/src/Blockfrost/Freer/Client.hs (2060, 2022-06-07)
cabal.project (979, 2022-06-07)
chain-watcher/ (0, 2022-06-07)
chain-watcher/CHANGELOG.md (217, 2022-06-07)
chain-watcher/LICENSE (554, 2022-06-07)
chain-watcher/Setup.hs (46, 2022-06-07)
chain-watcher/app/ (0, 2022-06-07)
chain-watcher/app/Main.hs (75, 2022-06-07)
chain-watcher/chain-watcher.cabal (4207, 2022-06-07)
chain-watcher/src/ (0, 2022-06-07)
chain-watcher/src/ChainWatcher.hs (12966, 2022-06-07)
chain-watcher/src/ChainWatcher/ (0, 2022-06-07)
chain-watcher/src/ChainWatcher/Api.hs (1171, 2022-06-07)
chain-watcher/src/ChainWatcher/Lens.hs (203, 2022-06-07)
chain-watcher/src/ChainWatcher/OpenApi.hs (2726, 2022-06-07)
chain-watcher/src/ChainWatcher/OpenApi/ (0, 2022-06-07)
chain-watcher/src/ChainWatcher/OpenApi/Util.hs (1798, 2022-06-07)
... ...
# dab
[](https://github.com/cardano-foundation/dab/actions/workflows/ci.yaml)
# About Decentralized application backend (dab) is a toolset that help developers interact with the Cardano blockchain and its smart validators. At its core, the component called `chain-watcher` is following the chain looking for specific events expected by the application backend. It supports different providers to access the Cardano network. # Community Decentralized application backend (dab) is a community project. We are releasing this minimal viable product in a modular form (at the moment it supports Blockfrost as a provider), we hope that it will gather developer community momentum and we will see many more different providers such as Oura, Koios or Ogmios emerge from the development community. We strongly encourage community members to apply for Project Catalyst funding to make this project their own and better. # Installation ## Building with Nix Nix is the prefered way to build the chain-watcher and its components. ```command nix-build -A chain-watcher.components.exes.chain-watcher-blockfrost ``` ## Building with Docker Please see docs/Docker.md. # Usage ## Running the application backend demo To run the application backend demo :zap:, do the following: ```command nix-shell export BLOCKFROST_TOKEN_PATH=~/.blockfrost.testnet.token cabal run chain-watcher-blockfrost ``` View the demo on http://localhost:8282/demo/index.html ## Demo of demo
## Client API
### Register new client
To register a new client on the chain-watcher.
```command
cid="$( curl -q -X POST -v localhost:8282/clients/new | jq -r)"
```
### Remove client
To remove an exising client on the chain-watcher.
```command
curl -X POST -v localhost:8282/clients/remove/${cid}
```
### Subscribe to event
To subscribe your client to a specific event on the chain-watcher.
```command
curl \
-X POST \
-H "Content-Type: application/json" \
-v localhost:8282/clients/request/${cid} \
--data '{"contents":"1075a1c98dbdf3486ec8f5050c84da30a057cb79ae0ce6d03d157c719c559332","tag":"TransactionStatusRequest"}'
```
### Recurring request
To subscribe your client to a reoccuring specific event on the chain-watcher.
```command
curl -X POST --data '{"contents":{"tag":"Ping"},"tag":"Recurring"}' -H "Content-Type: application/json" -v localhost:8282/clients/request/${cid}
```
### Address change request
To change your address event watching.
```command
curl -X POST --data '{"contents":"addr_test1wpzjtlyp6v4qx6gzjm4zc7lsdufw597507y060qhk84vpjsjd625n","tag":"AddressFundsRequest"}' -H "Content-Type: application/json" -v localhost:8282/clients/request/${cid}
```
### Follow server-sent event stream
To follow on the even stream from the chain-watcher.
```command
curl -v -N --http2 -H "Accept:text/event-stream" localhost:8282/sse/${cid}
```
# Contributing
We are looking forward to your contributions!
:bulb: See Contributing and Code of conduct for more information about how to contribute your code.
Decentralized application backend for Cardano.
About Installation Usage Contributing
# About Decentralized application backend (dab) is a toolset that help developers interact with the Cardano blockchain and its smart validators. At its core, the component called `chain-watcher` is following the chain looking for specific events expected by the application backend. It supports different providers to access the Cardano network. # Community Decentralized application backend (dab) is a community project. We are releasing this minimal viable product in a modular form (at the moment it supports Blockfrost as a provider), we hope that it will gather developer community momentum and we will see many more different providers such as Oura, Koios or Ogmios emerge from the development community. We strongly encourage community members to apply for Project Catalyst funding to make this project their own and better. # Installation ## Building with Nix Nix is the prefered way to build the chain-watcher and its components. ```command nix-build -A chain-watcher.components.exes.chain-watcher-blockfrost ``` ## Building with Docker Please see docs/Docker.md. # Usage ## Running the application backend demo To run the application backend demo :zap:, do the following: ```command nix-shell export BLOCKFROST_TOKEN_PATH=~/.blockfrost.testnet.token cabal run chain-watcher-blockfrost ``` View the demo on http://localhost:8282/demo/index.html ## Demo of demo
## Client API
### Register new client
To register a new client on the chain-watcher.
```command
cid="$( curl -q -X POST -v localhost:8282/clients/new | jq -r)"
```
### Remove client
To remove an exising client on the chain-watcher.
```command
curl -X POST -v localhost:8282/clients/remove/${cid}
```
### Subscribe to event
To subscribe your client to a specific event on the chain-watcher.
```command
curl \
-X POST \
-H "Content-Type: application/json" \
-v localhost:8282/clients/request/${cid} \
--data '{"contents":"1075a1c98dbdf3486ec8f5050c84da30a057cb79ae0ce6d03d157c719c559332","tag":"TransactionStatusRequest"}'
```
### Recurring request
To subscribe your client to a reoccuring specific event on the chain-watcher.
```command
curl -X POST --data '{"contents":{"tag":"Ping"},"tag":"Recurring"}' -H "Content-Type: application/json" -v localhost:8282/clients/request/${cid}
```
### Address change request
To change your address event watching.
```command
curl -X POST --data '{"contents":"addr_test1wpzjtlyp6v4qx6gzjm4zc7lsdufw597507y060qhk84vpjsjd625n","tag":"AddressFundsRequest"}' -H "Content-Type: application/json" -v localhost:8282/clients/request/${cid}
```
### Follow server-sent event stream
To follow on the even stream from the chain-watcher.
```command
curl -v -N --http2 -H "Accept:text/event-stream" localhost:8282/sse/${cid}
```
# Contributing
We are looking forward to your contributions!
:bulb: See Contributing and Code of conduct for more information about how to contribute your code.
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