How to retrieve complete world state of hyperledger

Question

How can i retrieve all the keys of the world state in hyperledger? Is there a shim function for it?

Answer 1

you can achieve this by iteration process over the keys by using stub.GetStateByRange() function.

I have included an example below. Go through it and try to implement on of ur own.

 keysIter, err := stub.GetStateByRange(startKey, endKey)
    if err != nil {
        return shim.Error(fmt.Sprintf("keys operation failed. Error accessing state: %s", err))
    }
    defer keysIter.Close()

    var keys []string
    for keysIter.HasNext() {
        key, _, iterErr := keysIter.Next()
        if iterErr != nil {
            return shim.Error(fmt.Sprintf("keys operation failed. Error accessing state: %s", err))
        }
        keys = append(keys, key)
    }