Add example using runLog initiator

Author: dimroc

wei_watchers/README.md

@@ -1,6 +1,6 @@
 # Wei Watchers
 
-Using Chainlink, this application simply echos incoming ethereum logs.
+Using Chainlink (CL), this application simply echos incoming ethereum logs.
 
 ![Log Echo Server](screenshot.jpg?raw=true "Log Echo Server")
 
@@ -20,12 +20,23 @@ Using Chainlink, this application simply echos incoming ethereum logs.
   3. `./node_modules/.bin/truffle migrate --network devnet`
 4. Run `./internal/bin/cldev` in top level repo folder
 
-## Run Wei Watchers
+## Run Wei Watchers EthLog (Raw Ethereum Logs)
 
 1. Check out this repo and go to folder [hello_chainlink/wei_watchers](https://github.com/smartcontractkit/hello_chainlink/tree/master/wei_watchers).
-2. `./create_cl_job` to create Wei Watchers Chainlink job
+2. `./create_ethlog_job` to create Wei Watchers Chainlink job
 3. `yarn install`
 4. `node echo.js`
 5. `./node_modules/.bin/truffle migrate` in another window
-6. `node send_transaction.js`
+6. `node send_ethlog_transaction.js`
+7. Wait for log to show up in echo server
+
+## Run Wei Watchers RunLog (Chainlink Specific Ethereum Logs)
+
+1. Check out this repo and go to folder [hello_chainlink/wei_watchers](https://github.com/smartcontractkit/hello_chainlink/tree/master/wei_watchers).
+2. `./create_runlog_job` to create CL job. Keep track of the returned job id.
+3. `yarn install`
+4. `node echo.js`
+5. Add job id to `contracts/RunLog.sol` where it says `MY_JOB_ID`
+5. `./node_modules/.bin/truffle migrate --reset` in another window
+6. `node send_runlog_transaction.js`
 7. Wait for log to show up in echo server

wei_watchers/contracts/SimpleLog.sol wei_watchers/contracts/EthLog.solwei_watchers/contracts/SimpleLog.sol renamed to wei_watchers/contracts/EthLog.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-contract SimpleLog {
+contract EthLog {
   event LogEvent(bytes32 indexed jobId);
 
   function logEvent() public {

wei_watchers/contracts/RunLog.sol

@@ -0,0 +1,29 @@
+pragma solidity ^0.4.18;
+
+import "../node_modules/chainlink/solidity/contracts/Chainlinked.sol";
+
+contract RunLog is Chainlinked {
+  uint256 private requestId;
+
+  function RunLog(address _oracle) public {
+    setOracle(_oracle);
+  }
+
+  function request() public {
+    var fid = bytes4(keccak256("fulfill(uint256,bytes32)"));
+    var data = '{"msg":"hello_chainlink"}';
+    requestId = oracle.requestData("MY_JOB_ID", this, fid, data);
+  }
+
+  function fulfill(uint256 _requestId, bytes32 _data)
+    public
+    onlyOracle
+    checkRequestId(_requestId)
+  {
+  }
+
+  modifier checkRequestId(uint256 _requestId) {
+    require(requestId == _requestId);
+    _;
+  }
+}

wei_watchers/create_cl_job wei_watchers/create_ethlog_jobwei_watchers/create_cl_job renamed to wei_watchers/create_ethlog_job

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+curl -u chainlink:twochains -X POST -H 'Content-Type: application/json' \
+       -d @./only_jobid_logs_job.json http://localhost:6688/v2/jobs

wei_watchers/create_runlog_job

@@ -0,0 +1,5 @@
+var EthLog = artifacts.require("./EthLog.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(EthLog);
+};

wei_watchers/migrations/2_eth_log.js

@@ -0,0 +1,5 @@
+let Oracle = artifacts.require("../node_modules/smartcontractkit/chainlink/solidity/contracts/Oracle.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(Oracle);
+};

wei_watchers/migrations/2_simple_log.js

@@ -0,0 +1,6 @@
+let Oracle = artifacts.require("../node_modules/smartcontractkit/chainlink/solidity/contracts/Oracle.sol");
+let RunLog = artifacts.require("./RunLog.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(RunLog, Oracle.address);
+};

wei_watchers/migrations/3_chainlink_oracle.js

@@ -0,0 +1,7 @@
+{
+  "_comment": "A runlog has a jobid baked into the contract so chainlink knows which job to run.",
+  "initiators": [{ "type": "runlog" }],
+  "tasks": [
+    { "type": "HttpPost", "url": "http://localhost:6690" }
+  ]
+}