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setupTask.go
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setupTask.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
import (
"log"
)
// SetupSchemaTask represents a task
// that sets up cassandra schema on
// a specified keyspace
type SetupSchemaTask struct {
client CQLClient
config *SetupSchemaConfig
}
func newSetupSchemaTask(config *SetupSchemaConfig) (*SetupSchemaTask, error) {
client, err := newCQLClient(config.CassHosts, config.CassPort, config.CassUser, config.CassPassword,
config.CassKeyspace)
if err != nil {
return nil, err
}
return &SetupSchemaTask{
config: config,
client: client,
}, nil
}
// run executes the task
func (task *SetupSchemaTask) run() error {
config := task.config
defer func() {
task.client.Close()
}()
log.Printf("Starting schema setup, config=%+v\n", config)
if config.Overwrite {
dropAllTablesTypes(task.client)
}
if !config.DisableVersioning {
log.Printf("Setting up version tables\n")
if err := task.client.CreateSchemaVersionTables(); err != nil {
return err
}
}
if len(config.SchemaFilePath) > 0 {
stmts, err := ParseCQLFile(config.SchemaFilePath)
if err != nil {
return err
}
log.Println("----- Creating types and tables -----")
for _, stmt := range stmts {
log.Println(rmspaceRegex.ReplaceAllString(stmt, " "))
if err := task.client.Exec(stmt); err != nil {
return err
}
}
log.Println("----- Done -----")
}
if !config.DisableVersioning {
log.Printf("Setting initial schema version to %v\n", config.InitialVersion)
err := task.client.UpdateSchemaVersion(config.InitialVersion, config.InitialVersion)
if err != nil {
return err
}
log.Printf("Updating schema update log\n")
err = task.client.WriteSchemaUpdateLog("0", config.InitialVersion, "", "initial version")
if err != nil {
return err
}
}
log.Println("Schema setup complete")
return nil
}