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wanderer🌟 / js-primea-hypervisor



Tree: 22cdc4553fb9b622685313bf95bdfd95774424cf

Files: 22cdc4553fb9b622685313bf95bdfd95774424cf / tests / index.js

31096 bytesRaw
1const tape = require('tape')
2const AbstractContainer = require('primea-abstract-container')
3const Message = require('primea-message')
4const Hypervisor = require('../')
5
6const level = require('level')
7const RadixTree = require('dfinity-radix-tree')
8const db = level('./testdb')
9
10class CreationMessage extends Message {
11  constructor (params) {
12    const buf = [Buffer.from([0x0]), Buffer.from([params.data.type])]
13    if (params.data.code) {
14      buf.push(params.data.code)
15    }
16    params.data = Buffer.concat(buf)
17    super(params)
18  }
19}
20
21class BaseContainer extends AbstractContainer {
22  onCreation (message) {
23    const port = message.ports[0]
24    if (port) {
25      return this.kernel.ports.bind('root', port)
26    }
27  }
28  static get typeId () {
29    return 9
30  }
31}
32
33tape('basic', async t => {
34  t.plan(3)
35  let message
36  const expectedState = {
37    '/': Buffer.from('646e7b89a3a4bb5dd6d43d1a7a29c69e72943bcd', 'hex')
38  }
39
40  const tree = new RadixTree({
41    db: db
42  })
43
44  class testVMContainer extends BaseContainer {
45    onMessage (m) {
46      t.true(m === message, 'should recive a message')
47    }
48  }
49
50  const hypervisor = new Hypervisor(tree)
51  hypervisor.registerContainer(testVMContainer)
52
53  const port = hypervisor.creationService.getPort()
54
55  let rootContainer = await hypervisor.send(port, new CreationMessage({
56    data: {
57      type: testVMContainer.typeId
58    }
59  }))
60
61  rootContainer = await hypervisor.getInstance(rootContainer.id)
62
63  hypervisor.pin(rootContainer)
64
65  const [portRef1, portRef2] = rootContainer.ports.createChannel()
66  const initMessage = new CreationMessage({
67    data: {
68      code: Buffer.from('test code'),
69      type: testVMContainer.typeId
70    },
71    ports: [portRef2]
72  })
73
74  message = rootContainer.createMessage()
75  await Promise.all([
76    rootContainer.send(port, initMessage),
77    rootContainer.ports.bind('first', portRef1),
78    rootContainer.send(portRef1, message)
79  ])
80  rootContainer.shutdown()
81
82  const stateRoot = await hypervisor.createStateRoot(Infinity)
83  t.deepEquals(stateRoot, expectedState, 'expected root!')
84
85  t.equals(hypervisor.scheduler.leastNumberOfTicks(), 0)
86})
87
88tape('basic - do not store containers with no ports bound', async t => {
89  t.plan(1)
90
91  const tree = new RadixTree({
92    db: db
93  })
94
95  const expectedState = {
96    '/': Buffer.from('5a316218edbc909f511b41d936517b27bb51cd6c', 'hex')
97  }
98
99  class testVMContainer extends BaseContainer {
100    onCreation () {}
101  }
102
103  const hypervisor = new Hypervisor(tree)
104  hypervisor.registerContainer(testVMContainer)
105
106  const creationPort = hypervisor.creationService.getPort()
107  let root = await hypervisor.send(creationPort, new CreationMessage({
108    data: {
109      type: testVMContainer.typeId
110    }
111  }))
112
113  hypervisor.pin(root)
114
115  root = await hypervisor.getInstance(root.id)
116
117  const [portRef1, portRef2] = root.ports.createChannel()
118
119  await Promise.all([
120    root.ports.bind('one', portRef1),
121    root.send(creationPort, new CreationMessage({
122      data: {
123        type: testVMContainer.typeId
124      },
125      ports: [portRef2]
126    }))
127  ])
128
129  root.shutdown()
130
131  const stateRoot = await hypervisor.createStateRoot(Infinity)
132
133  // await hypervisor.graph.tree(stateRoot, Infinity, true)
134  // console.log(JSON.stringify(stateRoot, null, 2))
135  t.deepEquals(stateRoot, expectedState, 'expected root!')
136})
137
138tape('one child contract', async t => {
139  t.plan(4)
140
141  const tree = new RadixTree({
142    db: db
143  })
144
145  let message
146  const expectedState = {
147    '/': Buffer.from('c91821c303cd07adde06c0d46c40aafe4542dea1', 'hex')
148  }
149
150  let hasResolved = false
151
152  class testVMContainer2 extends BaseContainer {
153    onMessage (m) {
154      t.true(m === message, 'should recive a message')
155      return new Promise((resolve, reject) => {
156        setTimeout(() => {
157          this.kernel.incrementTicks(1)
158          hasResolved = true
159          resolve()
160        }, 200)
161      })
162    }
163
164    static get typeId () {
165      return 99
166    }
167  }
168
169  class testVMContainer extends BaseContainer {
170    async onMessage (m) {
171      const [portRef1, portRef2] = this.kernel.ports.createChannel()
172      const port = this.kernel.hypervisor.creationService.getPort()
173
174      await Promise.all([
175        this.kernel.send(port, new CreationMessage({
176          data: {
177            type: testVMContainer2.typeId
178          },
179          ports: [portRef2]
180        })),
181        this.kernel.send(portRef1, m)
182      ])
183
184      this.kernel.incrementTicks(1)
185      return this.kernel.ports.bind('child', portRef1)
186    }
187  }
188
189  const hypervisor = new Hypervisor(tree)
190  hypervisor.registerContainer(testVMContainer)
191  hypervisor.registerContainer(testVMContainer2)
192
193  let creationPort = hypervisor.creationService.getPort()
194  let root = await hypervisor.send(creationPort, new CreationMessage({
195    data: {
196      type: testVMContainer.typeId
197    }
198  }))
199
200  hypervisor.pin(root)
201
202  const rootId = root.id
203  root = await hypervisor.getInstance(rootId)
204  const [portRef1, portRef2] = root.ports.createChannel()
205
206  message = root.createMessage()
207  await Promise.all([
208    root.send(creationPort, new CreationMessage({
209      data: {
210        type: testVMContainer.typeId
211      },
212      ports: [portRef2]
213    })),
214    root.ports.bind('first', portRef1),
215    root.send(portRef1, message)
216  ])
217
218  root.shutdown()
219
220  const stateRoot = await hypervisor.createStateRoot(Infinity)
221  t.true(hasResolved, 'should resolve before generating the state root')
222  t.deepEquals(stateRoot, expectedState, 'expected state')
223
224  // test reviving the state
225  class testVMContainer3 extends BaseContainer {
226    onMessage (m) {
227      const port = this.kernel.ports.get('child')
228      this.kernel.send(port, m)
229      this.kernel.incrementTicks(1)
230    }
231  }
232
233  hypervisor.registerContainer(testVMContainer3)
234  root = await hypervisor.getInstance(rootId)
235  const port = root.ports.get('first')
236  root.send(port, message)
237})
238
239tape('traps', async t => {
240  t.plan(1)
241
242  const tree = new RadixTree({
243    db: db
244  })
245  class Root extends BaseContainer {
246    async onMessage (m) {
247      const [portRef1] = this.kernel.ports.createChannel()
248      const [portRef3] = this.kernel.ports.createChannel()
249      const [portRef5] = this.kernel.ports.createChannel()
250
251      await Promise.all([
252        this.kernel.ports.bind('one', portRef1),
253        this.kernel.ports.bind('two', portRef3),
254        this.kernel.ports.bind('three', portRef5)
255      ])
256
257      throw new Error('it is a trap!!!')
258    }
259  }
260
261  const hypervisor = new Hypervisor(tree)
262
263  hypervisor.registerContainer(Root)
264  const creationPort = hypervisor.creationService.getPort()
265  const root = await hypervisor.send(creationPort, new CreationMessage({
266    data: {
267      type: Root.typeId
268    }
269  }))
270
271  hypervisor.pin(root)
272
273  await root.message(root.createMessage())
274  const stateRoot = await hypervisor.createStateRoot()
275
276  t.deepEquals(stateRoot, {
277    '/': Buffer.from('308b10121e2c46102e2d9701cfe11032786ef955', 'hex')
278  }, 'should revert the state')
279})
280
281tape('recieving older messages', async t => {
282  t.plan(2)
283
284  const tree = new RadixTree({
285    db: db
286  })
287  let runs = 0
288  const hypervisor = new Hypervisor(tree)
289  const creationPort = hypervisor.creationService.getPort()
290
291  class Root extends BaseContainer {
292    async onMessage (m) {
293      if (!runs) {
294        runs++
295        const [portRef1, portRef2] = this.kernel.ports.createChannel()
296        const [portRef3, portRef4] = this.kernel.ports.createChannel()
297
298        const message1 = new CreationMessage({
299          data: {
300            type: First.typeId
301          },
302          ports: [portRef2]
303        })
304        const message2 = new CreationMessage({
305          data: {
306            type: Waiter.typeId
307          },
308          ports: [portRef4]
309        })
310
311        return Promise.all([
312          this.kernel.send(creationPort, message1),
313          this.kernel.send(portRef1, this.kernel.createMessage()),
314          this.kernel.send(portRef3, this.kernel.createMessage()),
315          this.kernel.ports.bind('one', portRef1),
316          this.kernel.ports.bind('two', portRef3),
317          this.kernel.send(creationPort, message2)
318        ])
319      } else if (runs === 1) {
320        runs++
321        t.equals(m.data, 'first', 'should recive the first message')
322      } else {
323        runs++
324        t.equals(m.data, 'second', 'should recive the second message')
325      }
326    }
327    static get typeId () {
328      return 211
329    }
330  }
331
332  class First extends BaseContainer {
333    onMessage (m) {
334      this.kernel.incrementTicks(2)
335      return this.kernel.send(m.fromPort, this.kernel.createMessage({
336        data: 'second'
337      }))
338    }
339    static get typeId () {
340      return 29
341    }
342  }
343
344  class Waiter extends BaseContainer {
345    onMessage (m) {
346      return new Promise((resolve, reject) => {
347        setTimeout(() => {
348          this.kernel.send(m.fromPort, this.kernel.createMessage({
349            data: 'first'
350          })).then(resolve)
351        }, 200)
352      })
353    }
354  }
355
356  hypervisor.registerContainer(Root)
357  hypervisor.registerContainer(First)
358  hypervisor.registerContainer(Waiter)
359
360  let root = await hypervisor.send(creationPort, new CreationMessage({
361    data: {
362      type: Root.typeId
363    }
364  }))
365
366  hypervisor.pin(root)
367
368  root = await hypervisor.getInstance(root.id)
369  const [portRef1, portRef2] = root.ports.createChannel()
370
371  const message = root.createMessage()
372  await Promise.all([
373    root.send(portRef1, message),
374    root.ports.bind('first', portRef1),
375    root.send(creationPort, new CreationMessage({
376      data: {
377        type: Root.typeId
378      },
379      ports: [portRef2]
380    }))
381  ])
382  root.shutdown()
383})
384
385tape('saturation', async t => {
386  t.plan(3)
387
388  const tree = new RadixTree({
389    db: db
390  })
391  let runs = 0
392
393  const hypervisor = new Hypervisor(tree)
394  const creationPort = hypervisor.creationService.getPort()
395
396  class Root extends BaseContainer {
397    onIdle () {}
398    async onMessage (m) {
399      if (!runs) {
400        runs++
401        const [portRef1, portRef2] = this.kernel.ports.createChannel()
402        const [portRef3, portRef4] = this.kernel.ports.createChannel()
403
404        const message1 = new CreationMessage({
405          data: {
406            type: First.typeId
407          },
408          ports: [portRef2]
409        })
410
411        const message2 = new CreationMessage({
412          data: {
413            type: Second.typeId
414          },
415          ports: [portRef4]
416        })
417
418        this.kernel.incrementTicks(6)
419        await Promise.all([
420          this.kernel.send(creationPort, message1),
421          this.kernel.send(creationPort, message2),
422          this.kernel.send(portRef1, this.kernel.createMessage()),
423          this.kernel.send(portRef3, this.kernel.createMessage()),
424          this.kernel.ports.bind('one', portRef1),
425          this.kernel.ports.bind('two', portRef3)
426        ])
427      } else if (runs === 1) {
428        runs++
429        t.equals(m.data, 'first', 'should recive the first message')
430      } else if (runs === 2) {
431        runs++
432        t.equals(m.data, 'second', 'should recive the second message')
433      } else {
434        runs++
435        t.equals(m.data, 'third', 'should recived the third message')
436      }
437    }
438    static get typeId () {
439      return 112
440    }
441  }
442
443  class First extends BaseContainer {
444    onMessage (m) {
445      this.kernel.incrementTicks(2)
446      return this.kernel.send(m.fromPort, this.kernel.createMessage({
447        data: 'second'
448      }))
449    }
450    static get typeId () {
451      return 29
452    }
453  }
454
455  class Second extends BaseContainer {
456    onMessage (m) {
457      this.kernel.incrementTicks(3)
458      return this.kernel.send(m.fromPort, this.kernel.createMessage({
459        data: 'third'
460      }))
461    }
462    static get typeId () {
463      return 2
464    }
465  }
466
467  class Waiter extends BaseContainer {
468    onCreation (m) {
469      return new Promise((resolve, reject) => {
470        setTimeout(() => {
471          this.kernel.send(m.ports[0], this.kernel.createMessage({
472            data: 'first'
473          })).then(resolve)
474        }, 200)
475      })
476    }
477  }
478
479  hypervisor.registerContainer(Root)
480  hypervisor.registerContainer(First)
481  hypervisor.registerContainer(Second)
482  hypervisor.registerContainer(Waiter)
483
484  let root = await hypervisor.send(creationPort, new CreationMessage({
485    data: {
486      type: Root.typeId
487    }
488  }))
489
490  hypervisor.pin(root)
491  root = await hypervisor.getInstance(root.id)
492
493  const [portRef1, portRef2] = root.ports.createChannel()
494  const [portRef3, portRef4] = root.ports.createChannel()
495
496  const message = root.createMessage()
497  await Promise.all([
498    root.send(portRef1, message),
499    root.ports.bind('first', portRef1),
500    root.send(creationPort, new CreationMessage({
501      data: {
502        type: Root.typeId
503      },
504      ports: [portRef2]
505    })),
506    root.ports.bind('sencond', portRef3),
507    root.send(creationPort, new CreationMessage({
508      data: {
509        type: Waiter.typeId
510      },
511      ports: [portRef4]
512    }))
513  ])
514
515  root.incrementTicks(100)
516  await root.send(portRef1, root.createMessage({
517    data: 'testss'
518  }))
519  root.shutdown()
520})
521
522tape('send to the same container at the same time', async t => {
523  t.plan(2)
524
525  const tree = new RadixTree({
526    db: db
527  })
528  let runs = 0
529  let instance
530
531  const hypervisor = new Hypervisor(tree)
532  const creationPort = hypervisor.creationService.getPort()
533
534  class Root extends BaseContainer {
535    async onMessage (m) {
536      let one = this.kernel.ports.get('one')
537      if (!one) {
538        const [portRef1, portRef2] = this.kernel.ports.createChannel()
539        const message1 = new CreationMessage({
540          data: {
541            type: First.typeId
542          },
543          ports: [portRef2]
544        })
545        await this.kernel.send(creationPort, message1)
546        return this.kernel.ports.bind('one', portRef1)
547      } else {
548        return Promise.all([
549          this.kernel.send(one, this.kernel.createMessage()),
550          this.kernel.send(one, this.kernel.createMessage())
551        ])
552      }
553    }
554    static get typeId () {
555      return 111
556    }
557  }
558
559  class First extends BaseContainer {
560    onMessage (m) {
561      ++runs
562      if (runs === 2) {
563        t.equals(instance, this, 'should have same instances')
564      } else {
565        instance = this
566      }
567    }
568  }
569
570  hypervisor.registerContainer(Root)
571  hypervisor.registerContainer(First)
572
573  let root = await hypervisor.send(creationPort, new CreationMessage({
574    data: {
575      type: Root.typeId
576    }
577  }))
578
579  hypervisor.pin(root)
580  root = await hypervisor.getInstance(root.id)
581
582  const [portRef1, portRef2] = root.ports.createChannel()
583  await Promise.all([
584    root.ports.bind('first', portRef1),
585    root.send(creationPort, new CreationMessage({
586      data: {
587        type: Root.typeId
588      },
589      ports: [portRef2]
590    }))
591  ])
592
593  const message = root.createMessage()
594
595  await root.send(portRef1, message)
596  root.shutdown()
597  await hypervisor.createStateRoot()
598  await root.send(portRef1, root.createMessage())
599  await hypervisor.createStateRoot()
600  t.equals(runs, 2)
601})
602
603tape('checking ports', async t => {
604  t.plan(4)
605
606  const tree = new RadixTree({
607    db: db
608  })
609  const hypervisor = new Hypervisor(tree)
610  const creationPort = hypervisor.creationService.getPort()
611  hypervisor.registerContainer(BaseContainer)
612
613  let root = await hypervisor.send(creationPort, new CreationMessage({
614    data: {
615      type: BaseContainer.typeId
616    }
617  }))
618
619  hypervisor.pin(root)
620  root = await hypervisor.getInstance(root.id)
621
622  const [portRef1, portRef2] = root.ports.createChannel()
623  root.send(creationPort, new CreationMessage({
624    data: {
625      type: BaseContainer.typeId
626    },
627    ports: [portRef2]
628  }))
629  await root.ports.bind('test', portRef1)
630
631  try {
632    root.createMessage({
633      ports: [portRef1]
634    })
635  } catch (e) {
636    t.pass('should thow if sending a port that is bound')
637  }
638
639  try {
640    await root.ports.bind('test', portRef1)
641  } catch (e) {
642    t.pass('should thow if binding an already bound port')
643  }
644
645  try {
646    const [portRef3] = root.ports.createChannel()
647    await root.ports.bind('test', portRef3)
648  } catch (e) {
649    t.pass('should thow if binding an already bound name')
650  }
651
652  await root.ports.unbind('test')
653  const message = root.createMessage({
654    ports: [portRef1]
655  })
656  t.equals(message.ports[0], portRef1, 'should create a message if the port is unbound')
657})
658
659tape('port deletion', async t => {
660  const expectedSr = {
661    '/': Buffer.from('1f0673f23b4eeb86115992621d7edc981a6afade', 'hex')
662  }
663
664  const tree = new RadixTree({
665    db: db
666  })
667  const hypervisor = new Hypervisor(tree)
668  const creationPort = hypervisor.creationService.getPort()
669
670  class Root extends BaseContainer {
671    async onMessage (m) {
672      const [portRef1, portRef2] = this.kernel.ports.createChannel()
673      const message1 = new CreationMessage({
674        data: {
675          type: First.typeId
676        },
677        ports: [portRef2]
678      })
679
680      await Promise.all([
681        this.kernel.send(creationPort, message1),
682        this.kernel.send(portRef1, this.kernel.createMessage())
683      ])
684      this.kernel.incrementTicks(6)
685      return this.kernel.ports.bind('one', portRef1)
686    }
687  }
688
689  class First extends BaseContainer {
690    onMessage (m) {
691      this.kernel.incrementTicks(2)
692      return this.kernel.ports.delete('root')
693    }
694    static get typeId () {
695      return 111
696    }
697  }
698
699  hypervisor.registerContainer(Root)
700  hypervisor.registerContainer(First)
701
702  let root = await hypervisor.send(creationPort, new CreationMessage({
703    data: {
704      type: Root.typeId
705    }
706  }))
707
708  hypervisor.pin(root)
709  root = await hypervisor.getInstance(root.id)
710
711  const [portRef1, portRef2] = root.ports.createChannel()
712  await root.ports.bind('first', portRef1)
713  await root.send(creationPort, new CreationMessage({
714    data: {
715      type: Root.typeId
716    },
717    ports: [portRef2]
718  }))
719
720  const message = root.createMessage()
721  await root.send(portRef1, message)
722
723  root.shutdown()
724
725  const sr = await hypervisor.createStateRoot()
726  t.deepEquals(sr, expectedSr, 'should produce the corret state root')
727
728  t.end()
729})
730
731tape('clear unbounded ports', async t => {
732  const expectedSr = {
733    '/': Buffer.from('1f0673f23b4eeb86115992621d7edc981a6afade', 'hex')
734  }
735
736  const tree = new RadixTree({
737    db: db
738  })
739  const hypervisor = new Hypervisor(tree)
740  const creationPort = hypervisor.creationService.getPort()
741
742  class Root extends BaseContainer {
743    onMessage (m) {
744      return this.kernel.send(creationPort, new CreationMessage({
745        data: {
746          type: Root.typeId
747        }
748      }))
749    }
750  }
751
752  hypervisor.registerContainer(Root)
753
754  let root = await hypervisor.send(creationPort, new CreationMessage({
755    data: {
756      type: Root.typeId
757    }
758  }))
759
760  root = await hypervisor.getInstance(root.id)
761  hypervisor.pin(root)
762
763  const [portRef1, portRef2] = root.ports.createChannel()
764  await root.ports.bind('first', portRef1)
765  await root.send(creationPort, new CreationMessage({
766    data: {
767      type: Root.typeId
768    },
769    ports: [portRef2]
770  }))
771
772  const message = root.createMessage()
773  await root.send(portRef1, message)
774  root.shutdown()
775  const sr = await hypervisor.createStateRoot()
776  t.deepEquals(sr, expectedSr, 'should produce the corret state root')
777
778  t.end()
779})
780
781tape('should remove subgraphs', async t => {
782  const expectedSr = {
783    '/': Buffer.from('1f0673f23b4eeb86115992621d7edc981a6afade', 'hex')
784  }
785
786  const tree = new RadixTree({
787    db: db
788  })
789  const hypervisor = new Hypervisor(tree)
790  const creationPort = hypervisor.creationService.getPort()
791
792  class Root extends BaseContainer {
793    onMessage (m) {
794      const [, portRef2] = this.kernel.ports.createChannel()
795      return this.kernel.send(creationPort, new CreationMessage({
796        data: {
797          type: Sub.typeId
798        },
799        ports: [portRef2]
800      }))
801    }
802  }
803
804  class Sub extends BaseContainer {
805    static get typeId () {
806      return 299
807    }
808  }
809
810  hypervisor.registerContainer(Root)
811  hypervisor.registerContainer(Sub)
812
813  let root = await hypervisor.send(creationPort, new CreationMessage({
814    data: {
815      type: Root.typeId
816    }
817  }))
818
819  root = await hypervisor.getInstance(root.id)
820
821  hypervisor.pin(root)
822
823  const [portRef1, portRef2] = root.ports.createChannel()
824  await root.ports.bind('first', portRef1)
825  await root.send(creationPort, new CreationMessage({
826    data: {
827      type: Root.typeId
828    },
829    ports: [portRef2]
830  }))
831
832  await root.send(portRef1, root.createMessage())
833  root.shutdown()
834  const sr = await hypervisor.createStateRoot()
835
836  t.deepEquals(sr, expectedSr, 'should produce the corret state root')
837  t.end()
838})
839
840tape('should not remove connected nodes', async t => {
841  const tree = new RadixTree({
842    db: db
843  })
844
845  const expectedSr = {
846    '/': Buffer.from('9aeb0ce35c0ab845e7b273afe0329f826297124e', 'hex')
847  }
848
849  const hypervisor = new Hypervisor(tree)
850  const creationPort = hypervisor.creationService.getPort()
851
852  class Root extends BaseContainer {
853    async onMessage (m) {
854      if (m.ports.length) {
855        const port = this.kernel.ports.get('test1')
856        await this.kernel.send(port, m)
857        return this.kernel.ports.unbind('test1')
858      } else {
859        const [portRef1, portRef2] = this.kernel.ports.createChannel()
860        await this.kernel.send(creationPort, new CreationMessage({
861          data: {
862            type: Sub.typeId
863          },
864          ports: [portRef2]
865        }))
866        await this.kernel.ports.bind('test1', portRef1)
867
868        const [portRef3, portRef4] = this.kernel.ports.createChannel()
869        await this.kernel.send(creationPort, new CreationMessage({
870          data: {
871            type: Sub.typeId
872          },
873          ports: [portRef4]
874        }))
875        await this.kernel.ports.bind('test2', portRef3)
876        await this.kernel.send(portRef3, this.kernel.createMessage({
877          data: 'getChannel'
878        }))
879      }
880    }
881  }
882
883  class Sub extends BaseContainer {
884    async onMessage (message) {
885      if (message.data === 'getChannel') {
886        const ports = this.kernel.ports.createChannel()
887        await this.kernel.send(message.fromPort, this.kernel.createMessage({
888          data: 'bindPort',
889          ports: [ports[1]]
890        }))
891        return this.kernel.ports.bind('channel', ports[0])
892      } else {
893        return this.kernel.ports.bind('channel', message.ports[0])
894      }
895    }
896    static get typeId () {
897      return 111
898    }
899  }
900
901  hypervisor.registerContainer(Root)
902  hypervisor.registerContainer(Sub)
903
904  let root = await hypervisor.send(creationPort, new CreationMessage({
905    data: {
906      type: Root.typeId
907    }
908  }))
909
910  root = await hypervisor.getInstance(root.id)
911  hypervisor.pin(root)
912
913  const [portRef1, portRef2] = root.ports.createChannel()
914  await root.ports.bind('first', portRef1)
915  await root.send(creationPort, new CreationMessage({
916    data: {
917      type: Root.typeId
918    },
919    ports: [portRef2]
920  }))
921
922  await root.send(portRef1, root.createMessage())
923  root.shutdown()
924  const sr = await hypervisor.createStateRoot()
925
926  t.deepEquals(sr, expectedSr, 'should produce the corret state root')
927  t.end()
928})
929
930tape('should remove multiple subgraphs', async t => {
931  const tree = new RadixTree({
932    db: db
933  })
934  const expectedSr = {
935    '/': Buffer.from('196a7b55f26afb41f065923332e14b40cd0edf2e', 'hex')
936  }
937
938  const hypervisor = new Hypervisor(tree)
939  const creationPort = hypervisor.creationService.getPort()
940
941  class Root extends BaseContainer {
942    onMessage (m) {
943      if (m.ports.length) {
944        const port = this.kernel.ports.get('test1')
945        return Promise.all([
946          this.kernel.send(port, m),
947          this.kernel.ports.unbind('test1'),
948          this.kernel.ports.unbind('test2')
949        ])
950      } else {
951        const [portRef1, portRef2] = this.kernel.ports.createChannel()
952        const [portRef3, portRef4] = this.kernel.ports.createChannel()
953        return Promise.all([
954          this.kernel.send(creationPort, new CreationMessage({
955            data: {
956              type: Sub.typeId
957            },
958            ports: [portRef2]
959          })),
960          this.kernel.ports.bind('test1', portRef1),
961          this.kernel.send(creationPort, new CreationMessage({
962            data: {
963              type: Sub.typeId
964            },
965            ports: [portRef4]
966          })),
967          this.kernel.ports.bind('test2', portRef3),
968          this.kernel.send(portRef3, this.kernel.createMessage({
969            data: 'getChannel'
970          }))
971        ])
972      }
973    }
974  }
975
976  class Sub extends BaseContainer {
977    async onMessage (message) {
978      if (message.data === 'getChannel') {
979        const ports = this.kernel.ports.createChannel()
980        await this.kernel.send(message.fromPort, this.kernel.createMessage({
981          data: 'bindPort',
982          ports: [ports[1]]
983        }))
984        return this.kernel.ports.bind('channel', ports[0])
985      } else {
986        return this.kernel.ports.bind('channel', message.ports[0])
987      }
988    }
989    static get typeId () {
990      return 111
991    }
992  }
993
994  hypervisor.registerContainer(Root)
995  hypervisor.registerContainer(Sub)
996
997  let root = await hypervisor.send(creationPort, new CreationMessage({
998    data: {
999      type: Root.typeId
1000    }
1001  }))
1002
1003  root = await hypervisor.getInstance(root.id)
1004  hypervisor.pin(root)
1005
1006  const [portRef1, portRef2] = root.ports.createChannel()
1007  await Promise.all([
1008    root.ports.bind('first', portRef1),
1009    root.send(creationPort, new CreationMessage({
1010      data: {
1011        type: Root.typeId
1012      },
1013      ports: [portRef2]
1014    })),
1015    root.send(portRef1, root.createMessage())
1016  ])
1017
1018  root.shutdown()
1019
1020  const sr = await hypervisor.createStateRoot()
1021
1022  t.deepEquals(sr, expectedSr, 'should produce the corret state root')
1023
1024  t.end()
1025})
1026
1027tape('response ports', async t => {
1028  t.plan(2)
1029  const tree = new RadixTree({
1030    db: db
1031  })
1032  let runs = 0
1033  const returnValue = 'this is a test'
1034  const hypervisor = new Hypervisor(tree)
1035  const creationPort = hypervisor.creationService.getPort()
1036
1037  class testVMContainer extends BaseContainer {
1038    onMessage (m) {
1039      runs++
1040      if (runs === 1) {
1041        return returnValue
1042      } else {
1043        t.equals(m.data, returnValue, 'should have correct return value')
1044      }
1045    }
1046  }
1047
1048  hypervisor.registerContainer(testVMContainer)
1049
1050  let rootContainer = await hypervisor.send(creationPort, new CreationMessage({
1051    data: {
1052      type: testVMContainer.typeId
1053    }
1054  }))
1055
1056  rootContainer = await hypervisor.getInstance(rootContainer.id)
1057
1058  hypervisor.pin(rootContainer)
1059
1060  const [portRef1, portRef2] = rootContainer.ports.createChannel()
1061  const initMessage = new CreationMessage({
1062    data: {
1063      type: testVMContainer.typeId
1064    },
1065    ports: [portRef2]
1066  })
1067
1068  rootContainer.send(creationPort, initMessage)
1069
1070  await rootContainer.ports.bind('first', portRef1)
1071  const message = rootContainer.createMessage()
1072  const rPort = rootContainer.getResponsePort(message)
1073  const rPort2 = rootContainer.getResponsePort(message)
1074
1075  t.equals(rPort2, rPort)
1076
1077  rootContainer.send(portRef1, message)
1078  await rootContainer.ports.bind('response', rPort)
1079})
1080
1081tape('start up', async t => {
1082  t.plan(1)
1083
1084  const tree = new RadixTree({
1085    db: db
1086  })
1087
1088  class testVMContainer extends BaseContainer {
1089    onStartup () {
1090      t.pass('should start up')
1091    }
1092  }
1093
1094  const hypervisor = new Hypervisor(tree)
1095  const creationPort = hypervisor.creationService.getPort()
1096  hypervisor.registerContainer(testVMContainer)
1097  const instance = await hypervisor.send(creationPort, new CreationMessage({
1098    data: {
1099      type: testVMContainer.typeId
1100    }
1101  }))
1102  hypervisor.getInstance(instance.id)
1103})
1104
1105tape('large code size', async t => {
1106  t.plan(1)
1107  const tree = new RadixTree({
1108    db: db
1109  })
1110  const content = Buffer.from(new ArrayBuffer(1e6))
1111  class testVMContainer extends BaseContainer {}
1112
1113  const hypervisor = new Hypervisor(tree)
1114  const creationPort = hypervisor.creationService.getPort()
1115  hypervisor.registerContainer(testVMContainer)
1116  const oldInst = await hypervisor.send(creationPort, new CreationMessage({
1117    data: {
1118      type: testVMContainer.typeId,
1119      code: content
1120    }
1121  }))
1122  const instance = await hypervisor.getInstance(oldInst.id)
1123  t.equals(content.length, instance.code.length)
1124})
1125
1126tape('creation service messaging', async t => {
1127  t.plan(1)
1128
1129  const tree = new RadixTree({
1130    db: db
1131  })
1132
1133  class TestVMContainer extends BaseContainer {
1134    async onCreation (m) {
1135      const creationPort = m.ports[0]
1136      const [port1, port2] = this.kernel.ports.createChannel()
1137      await this.kernel.ports.bind('child', port1)
1138
1139      const message = new CreationMessage({
1140        data: {
1141          type: TestVMContainer2.typeId
1142        },
1143        ports: [port2]
1144      })
1145      return this.kernel.send(creationPort, message)
1146    }
1147  }
1148
1149  class TestVMContainer2 extends BaseContainer {
1150    static get typeId () {
1151      return 66
1152    }
1153  }
1154
1155  const hypervisor = new Hypervisor(tree)
1156  hypervisor.registerContainer(TestVMContainer)
1157  hypervisor.registerContainer(TestVMContainer2)
1158
1159  const port = hypervisor.creationService.getPort()
1160  const port2 = hypervisor.creationService.getPort()
1161
1162  const root = await hypervisor.send(port2, new CreationMessage({
1163    data: {
1164      type: TestVMContainer.typeId
1165    },
1166    ports: [port]
1167  }))
1168
1169  hypervisor.pin(root)
1170
1171  const stateRoot = await hypervisor.createStateRoot()
1172    // await hypervisor.graph.tree(hypervisor.state, Infinity, true)
1173  const expectedSR = {
1174    '/': Buffer.from('c86f6a4519b4a18e1f31abe357a84712aabce8d2', 'hex')
1175  }
1176  t.deepEquals(stateRoot, expectedSR)
1177})
1178
1179tape('creation service - port copy', async t => {
1180  t.plan(2)
1181
1182  const tree = new RadixTree({
1183    db: db
1184  })
1185
1186  class TestVMContainer extends BaseContainer {
1187    onCreation (m) {
1188      const creationPort = m.ports[0]
1189
1190      const message = this.kernel.createMessage()
1191      const responePort = this.kernel.getResponsePort(message)
1192
1193      return Promise.all([
1194        this.kernel.ports.bind('response', responePort),
1195        this.kernel.send(creationPort, message)
1196      ])
1197    }
1198    onMessage (m) {
1199      t.equal(m.fromName, 'response')
1200      t.equal(m.ports.length, 1)
1201    }
1202  }
1203
1204  const hypervisor = new Hypervisor(tree)
1205  hypervisor.registerContainer(TestVMContainer)
1206
1207  const port = hypervisor.creationService.getPort()
1208
1209  const root = await hypervisor.send(port, new CreationMessage({
1210    data: {
1211      type: TestVMContainer.typeId
1212    },
1213    ports: [port]
1214  }))
1215
1216  hypervisor.pin(root)
1217})
1218
1219tape('waiting on ports', async t => {
1220  t.plan(1)
1221
1222  const tree = new RadixTree({
1223    db: db
1224  })
1225
1226  class TestVMContainer extends BaseContainer {
1227    async onCreation (m) {
1228      await this.kernel.ports.bind('test', m.ports[0])
1229      this.kernel.ports.getNextMessage()
1230      try {
1231        await this.kernel.ports.getNextMessage()
1232      } catch (e) {
1233        t.pass('should throw if already trying to get a message')
1234      }
1235    }
1236  }
1237
1238  const hypervisor = new Hypervisor(tree)
1239  hypervisor.registerContainer(TestVMContainer)
1240
1241  const port = hypervisor.creationService.getPort()
1242
1243  await hypervisor.send(port, new CreationMessage({
1244    data: {
1245      type: TestVMContainer.typeId
1246    },
1247    ports: [port]
1248  }))
1249})
1250

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