Support redaction in pretty print

lib/tools.js

@@ -17,6 +17,7 @@ const {
   stringifySym,
   needsMetadataGsym,
   wildcardGsym,
+  redactFmtSym,
   streamSym
 } = require('./symbols')
 
@@ -195,7 +196,10 @@ function prettifierMetaWrapper (pretty, dest) {
         }
       }
 
-      const formatted = pretty(obj)
+      const stringifiers = this.lastLogger[stringifiersSym]
+      const redact = stringifiers[redactFmtSym]
+
+      const formatted = pretty(typeof redact === 'function' ? redact(obj) : obj)
       if (formatted === undefined) return
       dest.write(formatted)
     }

test/fixtures/pretty/redact.js

@@ -0,0 +1,9 @@
+global.process = { __proto__: process, pid: 123456 }
+Date.now = function () { return 1459875739796 }
+require('os').hostname = function () { return 'abcdefghijklmnopqr' }
+var pino = require(require.resolve('./../../../'))
+var log = pino({
+  prettyPrint: true,
+  redact: ['foo.an']
+})
+log.info({ foo: { an: 'object' } }, 'h')

test/pretty.test.js

@@ -121,3 +121,17 @@ test('applies serializers', async ({is, isNot}) => {
   isNot(actual.match(/\(123456 on abcdefghijklmnopqr\): h/), null)
   isNot(actual.match(/foo: "bar"/), null)
 })
+
+test('applies redaction rules', async ({is, isNot}) => {
+  var actual = ''
+  const child = fork(join(__dirname, 'fixtures', 'pretty', 'redact.js'), {silent: true})
+
+  child.stdout.pipe(writer((s, enc, cb) => {
+    actual += s
+    cb()
+  }))
+  await once(child, 'close')
+  isNot(actual.match(/\(123456 on abcdefghijklmnopqr\): h/), null)
+  isNot(actual.match(/\[Redacted\]/), null)
+  is(actual.match(/object/), null)
+})