forked from grafana/loki
/
table_client.go
107 lines (92 loc) · 2.9 KB
/
table_client.go
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package grpc
import (
"context"
"github.com/golang/protobuf/ptypes/empty"
"github.com/pkg/errors"
"google.golang.org/grpc"
"github.com/frelon/loki/v2/pkg/storage/chunk"
)
type TableClient struct {
client GrpcStoreClient
conn *grpc.ClientConn
}
// NewTableClient returns a new TableClient.
func NewTableClient(cfg Config) (*TableClient, error) {
grpcClient, conn, err := connectToGrpcServer(cfg.Address)
if err != nil {
return nil, err
}
client := &TableClient{
client: grpcClient,
conn: conn,
}
return client, nil
}
func (c *TableClient) ListTables(ctx context.Context) ([]string, error) {
tables, err := c.client.ListTables(ctx, &empty.Empty{})
if err != nil {
return nil, errors.WithStack(err)
}
return tables.TableNames, nil
}
func (c *TableClient) DeleteTable(ctx context.Context, name string) error {
tableName := &DeleteTableRequest{TableName: name}
_, err := c.client.DeleteTable(ctx, tableName)
if err != nil {
return errors.WithStack(err)
}
return nil
}
func (c *TableClient) DescribeTable(ctx context.Context, name string) (desc chunk.TableDesc, isActive bool, err error) {
tableName := &DescribeTableRequest{TableName: name}
tableDesc, err := c.client.DescribeTable(ctx, tableName)
if err != nil {
return desc, false, errors.WithStack(err)
}
desc.Name = tableDesc.Desc.Name
desc.ProvisionedRead = tableDesc.Desc.ProvisionedRead
desc.ProvisionedWrite = tableDesc.Desc.ProvisionedWrite
desc.UseOnDemandIOMode = tableDesc.Desc.UseOnDemandIOMode
desc.Tags = tableDesc.Desc.Tags
return desc, tableDesc.IsActive, nil
}
func (c *TableClient) UpdateTable(ctx context.Context, current, expected chunk.TableDesc) error {
currentTable := &TableDesc{}
expectedTable := &TableDesc{}
currentTable.Name = current.Name
currentTable.UseOnDemandIOMode = current.UseOnDemandIOMode
currentTable.ProvisionedWrite = current.ProvisionedWrite
currentTable.ProvisionedRead = current.ProvisionedRead
currentTable.Tags = current.Tags
expectedTable.Name = expected.Name
expectedTable.UseOnDemandIOMode = expected.UseOnDemandIOMode
expectedTable.ProvisionedWrite = expected.ProvisionedWrite
expectedTable.ProvisionedRead = expected.ProvisionedRead
expectedTable.Tags = expected.Tags
updateTableRequest := &UpdateTableRequest{
Current: currentTable,
Expected: expectedTable,
}
_, err := c.client.UpdateTable(ctx, updateTableRequest)
if err != nil {
return errors.WithStack(err)
}
return nil
}
func (c *TableClient) CreateTable(ctx context.Context, desc chunk.TableDesc) error {
req := &CreateTableRequest{}
req.Desc = &TableDesc{}
req.Desc.Name = desc.Name
req.Desc.ProvisionedRead = desc.ProvisionedRead
req.Desc.ProvisionedWrite = desc.ProvisionedWrite
req.Desc.Tags = desc.Tags
req.Desc.UseOnDemandIOMode = desc.UseOnDemandIOMode
_, err := c.client.CreateTable(ctx, req)
if err != nil {
return errors.WithStack(err)
}
return nil
}
func (c *TableClient) Stop() {
c.conn.Close()
}