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version_checker.go
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version_checker.go
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// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 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 (
"github.com/gocql/gocql"
"go.temporal.io/server/common/config"
"go.temporal.io/server/common/log"
"go.temporal.io/server/common/metrics"
commongocql "go.temporal.io/server/common/persistence/nosql/nosqlplugin/cassandra/gocql"
"go.temporal.io/server/common/persistence/schema"
"go.temporal.io/server/common/resolver"
cassandraschema "go.temporal.io/server/schema/cassandra"
)
// VerifyCompatibleVersion ensures that the installed version of temporal and visibility keyspaces
// is greater than or equal to the expected version.
// In most cases, the versions should match. However if after a schema upgrade there is a code
// rollback, the code version (expected version) would fall lower than the actual version in
// cassandra.
func VerifyCompatibleVersion(
cfg config.Persistence,
r resolver.ServiceResolver,
) error {
if err := checkMainKeyspace(cfg, r); err != nil {
return err
}
if cfg.StandardVisibilityConfigExist() {
return checkVisibilityKeyspace(cfg, r)
}
return nil
}
func checkMainKeyspace(
cfg config.Persistence,
r resolver.ServiceResolver,
) error {
ds, ok := cfg.DataStores[cfg.DefaultStore]
if ok && ds.Cassandra != nil {
return CheckCompatibleVersion(*ds.Cassandra, r, cassandraschema.Version)
}
return nil
}
func checkVisibilityKeyspace(
cfg config.Persistence,
r resolver.ServiceResolver,
) error {
ds, ok := cfg.DataStores[cfg.VisibilityStore]
if ok && ds.Cassandra != nil {
return CheckCompatibleVersion(*ds.Cassandra, r, cassandraschema.VisibilityVersion)
}
return nil
}
// CheckCompatibleVersion check the version compatibility
func CheckCompatibleVersion(
cfg config.Cassandra,
r resolver.ServiceResolver,
expectedVersion string,
) error {
session, err := commongocql.NewSession(
func() (*gocql.ClusterConfig, error) {
return commongocql.NewCassandraCluster(cfg, r)
},
log.NewNoopLogger(),
metrics.NoopMetricsHandler,
)
if err != nil {
return err
}
defer session.Close()
schemaVersionReader := NewSchemaVersionReader(session)
return schema.VerifyCompatibleVersion(schemaVersionReader, cfg.Keyspace, expectedVersion)
}