2020 02 21 datadir configurable (#1156)

* Make it so that you can pass in the datadir from the command line

* Add example on website

* implement ben's solution

app/server/src/main/scala/org/bitcoins/server/Main.scala

@@ -1,12 +1,13 @@
 package org.bitcoins.server
 
 import java.net.InetSocketAddress
-import java.nio.file.Files
+import java.nio.file.{Files, Paths}
 
 import akka.actor.ActorSystem
 import org.bitcoins.chain.config.ChainAppConfig
 import org.bitcoins.core.Core
 import org.bitcoins.core.api.ChainQueryApi
+import org.bitcoins.db.AppConfig
 import org.bitcoins.keymanager.KeyManagerInitializeError
 import org.bitcoins.keymanager.bip39.BIP39KeyManager
 import org.bitcoins.node.config.NodeAppConfig
@@ -22,7 +23,18 @@ import scala.concurrent.duration._
 import scala.concurrent.{Await, Future}
 
 object Main extends App {
-  implicit val conf = BitcoinSAppConfig.fromDefaultDatadir()
+  implicit val conf = {
+    val dataDirIndexOpt = args.zipWithIndex
+      .find(_._1.toLowerCase == "--datadir")
+
+    val datadirPath = dataDirIndexOpt match {
+      case None => AppConfig.DEFAULT_BITCOIN_S_DATADIR
+      case Some((_, dataDirIndex)) =>
+        val str = args(dataDirIndex + 1)
+        Paths.get(str)
+    }
+    BitcoinSAppConfig(datadirPath)
+  }
 
   private val logger = HttpLoggerImpl(conf.nodeConf).getLogger
 

docs/applications/server.md

@@ -31,6 +31,11 @@ This will produce a script to execute bitcoin-s which you can start with
 $ ./app/server/target/universal/stage/bin/bitcoin-s-server
 ```
 
+If you would like to pass in a custom datadir for your server, you can do
+
+```bash
+./app/server/target/universal/stage/bin/bitcoin-s-server --datadir /path/to/datadir/
+```
 For more information on configuring the server please see our [configuration](configuration.md) document
 
 For more information on how to use our built in `cli` to interact with the server please see [cli.md](cli.md)