add blockchain task

tasks/blockchain.coffee

@@ -0,0 +1,71 @@
+module.exports = (grunt) ->
+  readYaml = require('read-yaml')
+  require('shelljs/global')
+  sh = require('execSync')
+
+  grunt.registerTask "blockchain", "deploy ethereum node", (env_)  =>
+    env = env_ || "development"
+    try
+      blockchainConfig = readYaml.sync("config/blockchain.yml")
+    catch exception
+      grunt.log.writeln("==== error reading config/blockchain.yml")
+      grunt.log.writeln(exception)
+
+    rpcHost      = blockchainConfig[env].rpc_host
+    rpcPort      = blockchainConfig[env].rpc_port
+    rpcWhitelist = blockchainConfig[env].rpc_whitelist
+
+    minerthreads = blockchainConfig[env].minerthreads
+    datadir      = blockchainConfig[env].datadir
+    networkId    = blockchainConfig[env].network_id || Math.floor(((Math.random()*100000)+1000))
+    port         = blockchainConfig[env].port || "30303"
+    console          = blockchainConfig[env].console || false
+    mine_when_needed = blockchainConfig[env].mine_when_needed || false
+
+    account = blockchainConfig[env].account
+    address = account.address
+
+    cmd  = "geth "
+    unless datadir is "default"
+      cmd += "--datadir=\"#{datadir}\" "
+      cmd += "--logfile=\"#{datadir}.log\" "
+    cmd += "--port #{port} "
+    cmd += "--rpc "
+    cmd += "--rpcport #{rpcPort} "
+    cmd += "--networkid #{networkId} "
+    cmd += "--rpccorsdomain \"#{rpcWhitelist}\" "
+    unless minerthreads is undefined
+      cmd += "--minerthreads \"#{minerthreads}\" "
+    cmd += "--mine "
+
+    if account.password isnt undefined
+      cmd += "--password #{account.password} "
+
+    if account.init
+      grunt.log.writeln("=== initializating account")
+
+      result = exec(cmd + "account list")
+      grunt.log.writeln("running: #{cmd} account list")
+      grunt.log.writeln("=== output is #{result.output}")
+      if result.output.indexOf("Fatal") < 0
+        grunt.log.writeln("=== already initialized")
+        address = result.output.match(/{(\w+)}/)[1]
+      else
+        grunt.log.writeln("running: #{cmd} account new")
+        output = sh.exec(cmd + " account new")
+        address = output.stdout.match(/{(\w+)}/)[1]
+
+    if address isnt undefined
+      cmd += "--unlock #{address} "
+
+    if console
+      cmd += "console"
+
+    if mine_when_needed
+      cmd += "js node_modules/embark-framework/js/mine.js"
+
+    grunt.log.writeln("running: #{cmd}")
+    grunt.log.writeln("=== running geth")
+    #sh.run(cmd)
+    exec(cmd)
+