forked from jaegertracing/jaeger
/
session.go
78 lines (70 loc) · 2.39 KB
/
session.go
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package cassandra
// Consistency is Cassandra's consistency level for queries.
type Consistency uint16
const (
// Any ...
Any Consistency = 0x00
// One ...
One Consistency = 0x01
// Two ...
Two Consistency = 0x02
// Three ...
Three Consistency = 0x03
// Quorum ...
Quorum Consistency = 0x04
// All ...
All Consistency = 0x05
// LocalQuorum ...
LocalQuorum Consistency = 0x06
// EachQuorum ...
EachQuorum Consistency = 0x07
// LocalOne ...
LocalOne Consistency = 0x0A
)
// Session is an abstraction of gocql.Session
type Session interface {
Query(stmt string, values ...interface{}) Query
Close()
}
// UpdateQuery is a subset of Query just for updates
type UpdateQuery interface {
Exec() error
String() string
// ScanCAS executes a lightweight transaction (i.e. an UPDATE or INSERT
// statement containing an IF clause). If the transaction fails because
// the existing values did not match, the previous values will be stored
// in dest.
ScanCAS(dest ...interface{}) (bool, error)
}
// Query is an abstraction of gocql.Query
type Query interface {
UpdateQuery
Iter() Iterator
Bind(v ...interface{}) Query
Consistency(level Consistency) Query
PageSize(int) Query
}
// Iterator is an abstraction of gocql.Iter
type Iterator interface {
Scan(dest ...interface{}) bool
Close() error
}