perf(cli): load only requested sub-system modules and inline require ipfs and ipfs-api

src/cli/bin.js

@@ -5,6 +5,8 @@
 const yargs = require('yargs')
 const updateNotifier = require('update-notifier')
 const readPkgUp = require('read-pkg-up')
+const fs = require('fs')
+const path = require('path')
 const utils = require('./utils')
 const print = utils.print
 
@@ -16,6 +18,10 @@ updateNotifier({
 
 const args = process.argv.slice(2)
 
+// Determine if the first argument is a sub-system command
+const commandNames = fs.readdirSync(path.join(__dirname, 'commands'))
+const isCommand = commandNames.includes(`${args[0]}.js`)
+
 const cli = yargs
   .option('silent', {
     desc: 'Write no output',
@@ -28,7 +34,14 @@ const cli = yargs
     type: 'string',
     default: ''
   })
-  .commandDir('commands')
+  .commandDir('commands', {
+    // Only include the commands for the sub-system we're using, or include all
+    // if no sub-system command has been passed.
+    include (path, filename) {
+      if (!isCommand) return true
+      return `${args[0]}.js` === filename
+    }
+  })
   .epilog(utils.ipfsPathHelp)
   .demandCommand(1)
   .fail((msg, err, yargs) => {
@@ -43,16 +56,19 @@ const cli = yargs
     yargs.showHelp()
   })
 
-// NOTE: This creates an alias of
-// `jsipfs files {add, get, cat}` to `jsipfs {add, get, cat}`.
-// This will stay until https://github.com/ipfs/specs/issues/98 is resolved.
-const addCmd = require('./commands/files/add')
-const catCmd = require('./commands/files/cat')
-const getCmd = require('./commands/files/get')
-const aliases = [addCmd, catCmd, getCmd]
-aliases.forEach((alias) => {
-  cli.command(alias.command, alias.describe, alias.builder, alias.handler)
-})
+// If not a sub-system command then load the top level aliases
+if (!isCommand) {
+  // NOTE: This creates an alias of
+  // `jsipfs files {add, get, cat}` to `jsipfs {add, get, cat}`.
+  // This will stay until https://github.com/ipfs/specs/issues/98 is resolved.
+  const addCmd = require('./commands/files/add')
+  const catCmd = require('./commands/files/cat')
+  const getCmd = require('./commands/files/get')
+  const aliases = [addCmd, catCmd, getCmd]
+  aliases.forEach((alias) => {
+    cli.command(alias.command, alias.describe, alias.builder, alias.handler)
+  })
+}
 
 // Need to skip to avoid locking as these commands
 // don't require a daemon

src/cli/utils.js

@@ -2,9 +2,7 @@
 
 const fs = require('fs')
 const os = require('os')
-const APIctl = require('ipfs-api')
 const multiaddr = require('multiaddr')
-const IPFS = require('../core')
 const path = require('path')
 const debug = require('debug')
 const log = debug('cli')
@@ -35,6 +33,8 @@ function getAPICtl (apiAddr) {
     const apiPath = path.join(exports.getRepoPath(), 'api')
     apiAddr = multiaddr(fs.readFileSync(apiPath).toString()).toString()
   }
+  // Required inline to reduce startup time
+  const APIctl = require('ipfs-api')
   return APIctl(apiAddr)
 }
 
@@ -43,6 +43,8 @@ exports.getIPFS = (argv, callback) => {
     return callback(null, getAPICtl(argv.api), (cb) => cb())
   }
 
+  // Required inline to reduce startup time
+  const IPFS = require('../core')
   const node = new IPFS({
     repo: exports.getRepoPath(),
     init: false,

test/cli/daemon.js

@@ -5,8 +5,6 @@ const expect = require('chai').expect
 const clean = require('../utils/clean')
 const ipfsCmd = require('../utils/ipfs-exec')
 const isWindows = require('../utils/platforms').isWindows
-const pull = require('pull-stream')
-const toPull = require('stream-to-pull-stream')
 const os = require('os')
 const path = require('path')
 const hat = require('hat')
@@ -37,31 +35,20 @@ function testSignal (ipfs, sig) {
   }).then(() => {
     const proc = ipfs('daemon')
     return new Promise((resolve, reject) => {
-      pull(
-        toPull(proc.stdout),
-        pull.collect((err, res) => {
-          expect(err).to.not.exist()
-          const data = res.toString()
-          if (data.includes(`Daemon is ready`)) {
-            if (proc.kill(sig)) {
-              resolve()
-            } else {
-              reject(new Error(`Unable to ${sig} process`))
-            }
+      proc.stdout.on('data', (data) => {
+        if (data.toString().includes(`Daemon is ready`)) {
+          if (proc.kill(sig)) {
+            resolve()
+          } else {
+            reject(new Error(`Unable to ${sig} process`))
           }
-        })
-      )
-
-      pull(
-        toPull(proc.stderr),
-        pull.collect((err, res) => {
-          expect(err).to.not.exist()
-          const data = res.toString()
-          if (data.length > 0) {
-            reject(new Error(data))
-          }
-        })
-      )
+        }
+      })
+      proc.stderr.on('data', (data) => {
+        if (data.toString().length > 0) {
+          reject(new Error(data))
+        }
+      })
     })
   })
 }
@@ -79,6 +66,8 @@ describe('daemon', () => {
 
   skipOnWindows('do not crash if Addresses.Swarm is empty', function (done) {
     this.timeout(100 * 1000)
+    // These tests are flaky, but retrying 3 times seems to make it work 99% of the time
+    this.retries(3)
 
     ipfs('init').then(() => {
       return ipfs('config', 'Addresses', JSON.stringify({
@@ -87,10 +76,18 @@ describe('daemon', () => {
         Gateway: '/ip4/127.0.0.1/tcp/0'
       }), '--json')
     }).then(() => {
-      return ipfs('daemon')
-    }).then((res) => {
-      expect(res).to.have.string('Daemon is ready')
-      done()
+      const res = ipfs('daemon')
+      const timeout = setTimeout(() => {
+        done(new Error('Daemon did not get ready in time'))
+      }, 1000 * 120)
+      res.stdout.on('data', (data) => {
+        const line = data.toString()
+        if (line.includes('Daemon is ready')) {
+          clearTimeout(timeout)
+          res.kill()
+          done()
+        }
+      })
     }).catch(err => done(err))
   })