Use local node_modules cache

Author: vrde

get_geth.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 # WARNING: the following script has a high concentration of YOLOs
 
-ETHNODE_HOME=${HOME}/.ethnode
-mkdir -p ${ETHNODE_HOME}
+# Note: $HOMEDIR is defined in main.js, check it out
 
 PLATFORM=$(uname | tr '[:upper:]' '[:lower:]')
 ARCH=$(uname -m)
@@ -11,5 +10,5 @@ VERSION=$(curl -s https://api.github.com/repos/ethereum/go-ethereum/releases/lat
 COMMIT=$(curl -s https://api.github.com/repos/ethereum/go-ethereum/commits/${VERSION} | python -c "import sys, json; print(json.load(sys.stdin)['sha'])")
 NAME="geth-${PLATFORM}-amd64-${VERSION:1}-${COMMIT:0:8}"
 DOWNLOAD_URL="https://gethstore.blob.core.windows.net/builds/${NAME}.tar.gz"
-curl ${DOWNLOAD_URL} | tar -Oxzf - ${NAME}/geth > ${ETHNODE_HOME}/geth
-chmod +x ${ETHNODE_HOME}/geth
+curl ${DOWNLOAD_URL} | tar -Oxzf - ${NAME}/geth > ${HOMEDIR}/geth
+chmod +x ${HOMEDIR}/geth

get_parity.sh

@@ -2,7 +2,8 @@
 # This is a modified version of https://get.parity.io/, Copyright 2015-2018
 # Parity Technologies (UK) Ltd.
 
-ETHNODE_HOME=${HOME}/.ethnode
+# Note: $HOMEDIR is defined in main.js, check it out
+
 ORIGINAL_SOURCE=$(curl -s https://get.parity.io/)
 VERSION_STABLE=$(echo "${ORIGINAL_SOURCE}" | grep 'VERSION_STABLE=' | grep -oE '[0-9.]+')
 VERSION_BETA=$(echo "${ORIGINAL_SOURCE}" | grep 'VERSION_BETA=' | grep -oE '[0-9.]+')
@@ -45,8 +46,8 @@ install() {
   TMPDIR=$(mktemp -d) && cd $TMPDIR
   curl -S -O $DOWNLOAD_FILE
   check_sha256
-  mkdir -p ${ETHNODE_HOME}
-  cp $TMPDIR/parity ${ETHNODE_HOME} && chmod +x ${ETHNODE_HOME}/parity
+  mkdir -p ${HOMEDIR}
+  cp $TMPDIR/parity ${HOMEDIR} && chmod +x ${HOMEDIR}/parity
 }
 
 check_sha256() {

main.js

@@ -1,10 +1,15 @@
 const fs = require("fs");
 const path = require("path");
 const { spawnSync } = require("child_process");
+const findCacheDir = require("find-cache-dir");
 const { getKeypairs } = require("./crypto");
 
-const HOMEDIR = path.join(require("os").homedir(), ".ethnode");
 const KEYS_SOURCE = path.join(__dirname, "keys");
+const HOMEDIR = findCacheDir({
+  name: "ethnode",
+  cwd: __dirname,
+  create: true
+});
 
 function randomId() {
   return 1e9 + Math.round(Math.random() * 1e9);
@@ -54,15 +59,12 @@ function generateBalances(keypairs, balance) {
 
 function setup(client, workdir) {
   const paths = getPaths(client, workdir);
-  try {
-    fs.mkdirSync(HOMEDIR);
-  } catch (err) {
-    if (err.code !== "EEXIST") throw err;
-  }
-
   if (!fs.existsSync(paths.binary)) {
     console.log(`Download latest ${client} version, please wait.`);
-    spawnSync(path.join(__dirname, `get_${client}.sh`), { stdio: "inherit" });
+    spawnSync(path.join(__dirname, `get_${client}.sh`), {
+      env: { HOMEDIR },
+      stdio: "inherit"
+    });
   }
 }
 

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "ethnode",
-  "version": "0.0.9",
+  "version": "0.0.10",
   "description": "Run an Ethereum node for development.",
   "homepage": "https://github.com/vrde/ethnode",
   "main": "main.js",
@@ -12,6 +12,7 @@
   "license": "MPL-2.0",
   "dependencies": {
     "commander": "^2.19.0",
+    "find-cache-dir": "^3.0.0",
     "js-sha3": "^0.8.0",
     "keythereum": "^1.0.4",
     "request": "^2.88.0",