Problem of querying the Hyperledger Historian

问题

I am developing Hyperledger composer application and I want to get all the transactions related data like transaction type,transaction Id and timestamp to a particular stakeholder who involved in. I created following query to get data from historian.

 query getFromHistorian {
     description:"get user transactions"
     statement:
         SELECT org.hyperledger.composer.system.HistorianRecord
         WHERE (participantInvoking == _$stakeholder)
 }  

But when I execute this query by giving a stakeholder id using REST API it serve empty response body. How can I fix it and did I do the right thing ?

回答1:

You have to make sure that the current participant have permissions to READ the historian in the permissons.acl file or the query will always returns empty array.

rule ParticipantWhoCanReadHistorian {
  description: "this type of participants can read HistorianRecord to the Historian"
  participant: "the participant name space"
  operation: READ
  resource: "org.hyperledger.composer.system.HistorianRecord"
  action: ALLOW  
}

来源：https://stackoverflow.com/questions/52352835/problem-of-querying-the-hyperledger-historian