feat: 🎸Integrate Livepeer Subgraph (#251)

* feat: 🎸 Integrate Livepeer Subgraph

Leverages The Graph to reduce the time-to-load of the transcoder view and add a “missed calls” column to the transcoder card.

Issues: #199, #192

* Update .env.development with REACT_APP_LIVEPEER_SUBGRAPH

* Prevent lerna from hoisting subgraph typescript dependencies

* Update graph-ts, graph-cli, and graph-node deps

* Refactor to support The Graph dependency updates

* Update graph-cli and graph-ts deps

* Update subgraph README

* Include more comments

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+dist/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# next.js build output
+.next

LICENSE-MIT

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+The MIT License (MIT)
+
+Copyright (c) 2018 Graph Protocol, Inc. and contributors.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# Livepeer Subgraph
+
+[![Discord](https://img.shields.io/discord/423160867534929930.svg?style=flat-square)](https://discord.gg/7wRSUGX)
+[![GitHub issues](https://img.shields.io/github/issues/livepeer/livepeerjs/subgraph.svg?style=flat-square)](https://github.com/livepeer/livepeerjs/labels/subgraph)
+
+This package contains the source code for the Livepeer Subgraph, a project for
+indexing and querying Livepeer data from the Ethereum blockchain using [The Graph](https://thegraph.com).
+
+## Quick Start
+
+### Running a local Graph Node with Docker
+
+The quickest way to run a Graph Node locally is to use the
+[graph-node docker image](https://hub.docker.com/r/graphprotocol/graph-node/).
+
+1. Install [Docker](https://docs.docker.com)
+2. Clone https://github.com/graphprotocol/graph-node
+3. Edit `docker/docker-compose.yml`
+   - Replace `ethereum: "dev:http://parity:8545"` with `ethereum: "mainnet:https://mainnet.infura.io/"`
+   - Remove `RUST_LOG: info`
+   - Remove the Parity service (`parity:` and everything below it)
+4. Run `cd docker && docker-compose up`
+
+This will automatically provision a server with rust, postgres, and ipfs, and
+spin up a graph node with a GraphiQL interface at `http://127.0.0.1:8000/`.
+Congrats, you're now ready to build and deploy the Livepeer subgraph. You may
+skip ahead to [Building & deploying the Subgraph](#building-&-deploying-the-livepeer-subgraph)
+
+### Running a local Graph Node _without_ Docker
+
+If you wish to run a graph node without docker you need to have the
+following installed on your system:
+
+- Rust (latest stable) - [How to install Rust](https://www.rust-lang.org/en-US/install.html)
+- PostgreSQL v9.6 or above – [PostgreSQL Downloads](https://www.postgresql.org/download/)
+- IPFS – [Installing IPFS](https://ipfs.io/docs/install/)
+
+For Ethereum network data you can either run a local node or use Infura.io:
+
+- Local node – [Installing and running Ethereum node](https://ethereum.gitbooks.io/frontier-guide/content/getting_a_client.html)
+- Infura infra – [Infura.io](https://infura.io/)
+
+Note: We recommend using Infura.io. The Livepeer Subgraph requires access to contract state which means if you'd like to use a local Ethereum node you'd have to run it in archive mode which is not practical unless you have a lot of time to sync or already have one running.
+
+Once you've installed everything follow these steps:
+
+1. Run `ipfs init` followed by `ipfs daemon`
+2. Run `initdb -D .postgres` followed by `createdb graph-node`
+3. If using Ubuntu, you may need to install additional packages:
+   - `sudo apt-get install -y clang libpq-dev libssl-dev pkg-config`
+4. Clone https://github.com/graphprotocol/graph-node and run `cargo build`
+
+Once you have all the dependencies set up you can run the following:
+
+```
+cargo run -p graph-node --release -- \
+  --postgres-url postgresql://USERNAME[:PASSWORD]@localhost:5432/graph-node \
+  --ethereum-rpc mainnet:https://mainnet.infura.io/ \
+  --ipfs 127.0.0.1:5001 \
+```
+
+Try your OS username as `USERNAME` and `PASSWORD`. The password might be
+optional, it depends on your setup.
+
+This will also spin up a GraphiQL interface at `http://127.0.0.1:8000/`.
+
+### Building & deploying the Livepeer Subgraph
+
+Back in our subgraph directory, run
+
+```
+yarn codegen
+yarn deploy
+```
+
+After downloading the latest blocks from Ethereum, you should begin to see
+Livepeer smart contract events flying in. Open a GraphiQL browser at
+localhost:8000 to query the Graph Node.
+
+Here's an example query for fetching Livepeer transcoders:
+
+```
+query {
+  transcoders {
+    id
+    rewardCut
+    feeShare
+    pricePerSegment
+    pendingRewardCut
+    pendingFeeShare
+    pendingPricePerSegment
+    totalStake
+    lastRewardRound
+    active
+    status
+    rewards {
+      rewardTokens
+      round {
+        id
+      }
+    }
+  }
+}
+```
+
+Here's another example query for fetching rounds:
+
+```
+query {
+  rounds {
+    id
+    rewards {
+      rewardTokens
+      transcoder {
+        id
+      }
+    }
+  }
+}
+```
+
+### Explorer Integration
+
+Once you've got your Graph Node running and successfully deployed the Livepeer
+Subgraph, you're ready to integrate it with the Explorer. Simply set the
+environment variable `REACT_APP_LIVEPEER_SUBGRAPH` inside `.env.development` to
+your graphql endpoint.
+
+For example:
+`REACT_APP_LIVEPEER_SUBGRAPH=http://localhost:8000/by-name/livepeer/graphql`
+
+The explorer will begin quering indexed transcoder data from the Graph Node.
+Note that if you shutdown the Graph Node, the Explorer will gracefully fallback
+to querying the transcoder data from the blockchain directly.