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// Copyright 2024 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package spannerclient
import (
"context"
"time"
"cloud.google.com/go/spanner"
)
type SpannerClient interface {
Close()
Apply(ctx context.Context, ms []*spanner.Mutation, opts ...spanner.ApplyOption) (commitTimestamp time.Time, err error)
Single() ReadOnlyTransaction
}
type ReadOnlyTransaction interface {
Query(ctx context.Context, statement spanner.Statement) RowIterator
}
type RowIterator interface {
Next() (Row, error)
Stop()
}
type Row interface {
ToStruct(p any) error
}
type SpannerClientProxy struct {
client *spanner.Client
}
func (proxy *SpannerClientProxy) Close() {
proxy.client.Close()
}
func (proxy *SpannerClientProxy) Apply(ctx context.Context, ms []*spanner.Mutation, opts ...spanner.ApplyOption,
) (commitTimestamp time.Time, err error) {
return proxy.client.Apply(ctx, ms, opts...)
}
func (proxy *SpannerClientProxy) Single() ReadOnlyTransaction {
return &SpannerReadOnlyTransactionProxy{
readOnlyTransaction: proxy.client.Single(),
}
}
type SpannerReadOnlyTransactionProxy struct {
readOnlyTransaction *spanner.ReadOnlyTransaction
}
func (proxy *SpannerReadOnlyTransactionProxy) Query(ctx context.Context, statement spanner.Statement) RowIterator {
return &SpannerRowIteratorProxy{
rowIterator: proxy.readOnlyTransaction.Query(ctx, statement),
}
}
type SpannerRowIteratorProxy struct {
rowIterator *spanner.RowIterator
}
func (proxy *SpannerRowIteratorProxy) Next() (Row, error) {
return proxy.rowIterator.Next()
}
func (proxy *SpannerRowIteratorProxy) Stop() {
proxy.rowIterator.Stop()
}
func NewClient(ctx context.Context, projectID string) (SpannerClient, error) {
database := "projects/" + projectID + "/instances/syzbot/databases/coverage"
client, err := spanner.NewClient(ctx, database)
return &SpannerClientProxy{
client: client,
}, err
}
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