github.com/s7techlab/cckit@v0.10.5/testing/testdata/cc_tx_state_isolation.go (about)

     1  package testdata
     2  
     3  import (
     4  	"github.com/s7techlab/cckit/router"
     5  )
     6  
     7  const (
     8  	Key1 = `abc`
     9  
    10  	TxIsolationReadAfterWrite  = `ReadAfterWrite`
    11  	TxIsolationReadAfterDelete = `ReadAfterDelete`
    12  )
    13  
    14  var (
    15  	Value1 = []byte(`cde`)
    16  )
    17  
    18  func NewTxIsolationCC() *router.Chaincode {
    19  	r := router.New(`tx_isolation`)
    20  
    21  	r.Query(TxIsolationReadAfterWrite, ReadAfterWrite).
    22  		Query(TxIsolationReadAfterDelete, ReadAfterDelete)
    23  
    24  	return router.NewChaincode(r)
    25  }
    26  
    27  func ReadAfterWrite(c router.Context) (interface{}, error) {
    28  	if err := c.State().Put(Key1, Value1); err != nil {
    29  		return nil, err
    30  	}
    31  
    32  	// return empty, cause state changes cannot be read
    33  	res, _ := c.State().Get(Key1)
    34  	// if we return error - state changes will not applied
    35  	return res, nil
    36  }
    37  
    38  func ReadAfterDelete(c router.Context) (interface{}, error) {
    39  	if err := c.State().Delete(Key1); err != nil {
    40  		return nil, err
    41  	}
    42  	// return non empty, cause state changes, include deletion, cannot be read
    43  	return c.State().Get(Key1)
    44  }