CODEWITHSUNDEEP
hyperledger-fabrichyperledgerhyperledger-composer
jdevoo
jdevoo

Reputation: 46

Adding assets from the command line

I am using a set of Hyperledger 1.0.2 docker images with composer 0.11.3 The practice network I use is basic-sample-network which comes with a SampleParticipant and a SampleAsset. I am able to deploy the participant from the command line using composer participant add along with the JSON snippet. I have not found an equivalent command line approach to insert the SampleAsset into the asset registry. When I use the composer-rest-server to POST the JSON snippet defining the SampleAsset, it returned the following error

Error: Peer has rejected transaction '4d2...91f' with cdoe MVCC_READ_CONFLICT

I then re-submitted after reading a comment on BatchTimeout and locking which I didn't modify as I am a single user on a baby chain. The second time, the REST server returned

Error: Failed to add object with ID 'assetId:1' as the object already exists)

I could verify the asset registry was updated with composer network list:

name:       basic-sample-network
models:
  - org.hyperledger.composer.system
  - org.acme.sample
scripts:
  - lib/sample.js
registries:
  org.acme.sample.SampleAsset:
    id:           org.acme.sample.SampleAsset
    name:         Asset registry for org.acme.sample.SampleAsset
    registryType: Asset
    assets:
      assetId:1:
        $class:  org.acme.sample.SampleAsset
        assetId: assetId:1
        owner:   resource:org.acme.sample.SampleParticipant#Toby
        value:   new value
  org.acme.sample.SampleParticipant:
    id:           org.acme.sample.SampleParticipant
    name:         Participant registry for org.acme.sample.SampleParticipant
    registryType: Participant
    assets:
      Toby:
        $class:        org.acme.sample.SampleParticipant
        participantId: Toby
        firstName:     Tobias
        lastName:      Hunter

Why this odd behaviour from the REST server which complained with MVCC_READ_CONFLICT but yet inserted the record and is there a way I missed of inserting the SampleAsset from the command line?

Upvotes: 1

Views: 640

Answers (1)

Paul O'Mahony
Paul O'Mahony

Reputation: 6740

hmmm.. not sure why you got an MVCC error (as you say, can't have been to do with the asset that was indeed added, as you've shown).

composer transaction submit is the method to submit a transaction to (say) add an asset from the command line - examples in the docs ('Example command') and another below:

https://hyperledger.github.io/composer/reference/composer.transaction.submit.html

https://gist.github.com/jt-nti/137a039eb21992136c3f3e54c5c50fa5#file-org-hyperledger-composer-system-addasset-txt

Upvotes: 1

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