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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// AUTO-GENERATED CODE. DO NOT EDIT.
package database
import (
"math"
"time"
"cloud.google.com/go/internal/version"
"cloud.google.com/go/longrunning"
lroauto "cloud.google.com/go/longrunning/autogen"
gax "github.com/googleapis/gax-go"
"golang.org/x/net/context"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
"google.golang.org/api/transport"
iampb "google.golang.org/genproto/googleapis/iam/v1"
longrunningpb "google.golang.org/genproto/googleapis/longrunning"
databasepb "google.golang.org/genproto/googleapis/spanner/admin/database/v1"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
)
// DatabaseAdminCallOptions contains the retry settings for each method of DatabaseAdminClient.
type DatabaseAdminCallOptions struct {
ListDatabases []gax.CallOption
CreateDatabase []gax.CallOption
GetDatabase []gax.CallOption
UpdateDatabaseDdl []gax.CallOption
DropDatabase []gax.CallOption
GetDatabaseDdl []gax.CallOption
SetIamPolicy []gax.CallOption
GetIamPolicy []gax.CallOption
TestIamPermissions []gax.CallOption
}
func defaultDatabaseAdminClientOptions() []option.ClientOption {
return []option.ClientOption{
option.WithEndpoint("spanner.googleapis.com:443"),
option.WithScopes(DefaultAuthScopes()...),
}
}
func defaultDatabaseAdminCallOptions() *DatabaseAdminCallOptions {
retry := map[[2]string][]gax.CallOption{
{"default", "idempotent"}: {
gax.WithRetry(func() gax.Retryer {
return gax.OnCodes([]codes.Code{
codes.DeadlineExceeded,
codes.Unavailable,
}, gax.Backoff{
Initial: 1000 * time.Millisecond,
Max: 32000 * time.Millisecond,
Multiplier: 1.3,
})
}),
},
}
return &DatabaseAdminCallOptions{
ListDatabases: retry[[2]string{"default", "idempotent"}],
CreateDatabase: retry[[2]string{"default", "non_idempotent"}],
GetDatabase: retry[[2]string{"default", "idempotent"}],
UpdateDatabaseDdl: retry[[2]string{"default", "idempotent"}],
DropDatabase: retry[[2]string{"default", "idempotent"}],
GetDatabaseDdl: retry[[2]string{"default", "idempotent"}],
SetIamPolicy: retry[[2]string{"default", "non_idempotent"}],
GetIamPolicy: retry[[2]string{"default", "idempotent"}],
TestIamPermissions: retry[[2]string{"default", "non_idempotent"}],
}
}
// DatabaseAdminClient is a client for interacting with Cloud Spanner Database Admin API.
type DatabaseAdminClient struct {
// The connection to the service.
conn *grpc.ClientConn
// The gRPC API client.
databaseAdminClient databasepb.DatabaseAdminClient
// LROClient is used internally to handle longrunning operations.
// It is exposed so that its CallOptions can be modified if required.
// Users should not Close this client.
LROClient *lroauto.OperationsClient
// The call options for this service.
CallOptions *DatabaseAdminCallOptions
// The x-goog-* metadata to be sent with each request.
xGoogMetadata metadata.MD
}
// NewDatabaseAdminClient creates a new database admin client.
//
// Cloud Spanner Database Admin API
//
// The Cloud Spanner Database Admin API can be used to create, drop, and
// list databases. It also enables updating the schema of pre-existing
// databases.
func NewDatabaseAdminClient(ctx context.Context, opts ...option.ClientOption) (*DatabaseAdminClient, error) {
conn, err := transport.DialGRPC(ctx, append(defaultDatabaseAdminClientOptions(), opts...)...)
if err != nil {
return nil, err
}
c := &DatabaseAdminClient{
conn: conn,
CallOptions: defaultDatabaseAdminCallOptions(),
databaseAdminClient: databasepb.NewDatabaseAdminClient(conn),
}
c.setGoogleClientInfo()
c.LROClient, err = lroauto.NewOperationsClient(ctx, option.WithGRPCConn(conn))
if err != nil {
// This error "should not happen", since we are just reusing old connection
// and never actually need to dial.
// If this does happen, we could leak conn. However, we cannot close conn:
// If the user invoked the function with option.WithGRPCConn,
// we would close a connection that's still in use.
// TODO(pongad): investigate error conditions.
return nil, err
}
return c, nil
}
// Connection returns the client's connection to the API service.
func (c *DatabaseAdminClient) Connection() *grpc.ClientConn {
return c.conn
}
// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *DatabaseAdminClient) Close() error {
return c.conn.Close()
}
// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *DatabaseAdminClient) setGoogleClientInfo(keyval ...string) {
kv := append([]string{"gl-go", version.Go()}, keyval...)
kv = append(kv, "gapic", version.Repo, "gax", gax.Version, "grpc", grpc.Version)
c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}
// ListDatabases lists Cloud Spanner databases.
func (c *DatabaseAdminClient) ListDatabases(ctx context.Context, req *databasepb.ListDatabasesRequest, opts ...gax.CallOption) *DatabaseIterator {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.ListDatabases[0:len(c.CallOptions.ListDatabases):len(c.CallOptions.ListDatabases)], opts...)
it := &DatabaseIterator{}
it.InternalFetch = func(pageSize int, pageToken string) ([]*databasepb.Database, string, error) {
var resp *databasepb.ListDatabasesResponse
req.PageToken = pageToken
if pageSize > math.MaxInt32 {
req.PageSize = math.MaxInt32
} else {
req.PageSize = int32(pageSize)
}
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.ListDatabases(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, "", err
}
return resp.Databases, resp.NextPageToken, nil
}
fetch := func(pageSize int, pageToken string) (string, error) {
items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
if err != nil {
return "", err
}
it.items = append(it.items, items...)
return nextPageToken, nil
}
it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
return it
}
// CreateDatabase creates a new Cloud Spanner database and starts to prepare it for serving.
// The returned [long-running operation][google.longrunning.Operation] will
// have a name of the format <database_name>/operations/<operation_id> and
// can be used to track preparation of the database. The
// [metadata][google.longrunning.Operation.metadata] field type is
// [CreateDatabaseMetadata][google.spanner.admin.database.v1.CreateDatabaseMetadata]. The
// [response][google.longrunning.Operation.response] field type is
// [Database][google.spanner.admin.database.v1.Database], if successful.
func (c *DatabaseAdminClient) CreateDatabase(ctx context.Context, req *databasepb.CreateDatabaseRequest, opts ...gax.CallOption) (*CreateDatabaseOperation, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.CreateDatabase[0:len(c.CallOptions.CreateDatabase):len(c.CallOptions.CreateDatabase)], opts...)
var resp *longrunningpb.Operation
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.CreateDatabase(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return &CreateDatabaseOperation{
lro: longrunning.InternalNewOperation(c.LROClient, resp),
}, nil
}
// GetDatabase gets the state of a Cloud Spanner database.
func (c *DatabaseAdminClient) GetDatabase(ctx context.Context, req *databasepb.GetDatabaseRequest, opts ...gax.CallOption) (*databasepb.Database, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.GetDatabase[0:len(c.CallOptions.GetDatabase):len(c.CallOptions.GetDatabase)], opts...)
var resp *databasepb.Database
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.GetDatabase(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
// UpdateDatabaseDdl updates the schema of a Cloud Spanner database by
// creating/altering/dropping tables, columns, indexes, etc. The returned
// [long-running operation][google.longrunning.Operation] will have a name of
// the format <database_name>/operations/<operation_id> and can be used to
// track execution of the schema change(s). The
// [metadata][google.longrunning.Operation.metadata] field type is
// [UpdateDatabaseDdlMetadata][google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata]. The operation has no response.
func (c *DatabaseAdminClient) UpdateDatabaseDdl(ctx context.Context, req *databasepb.UpdateDatabaseDdlRequest, opts ...gax.CallOption) (*UpdateDatabaseDdlOperation, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.UpdateDatabaseDdl[0:len(c.CallOptions.UpdateDatabaseDdl):len(c.CallOptions.UpdateDatabaseDdl)], opts...)
var resp *longrunningpb.Operation
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.UpdateDatabaseDdl(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return &UpdateDatabaseDdlOperation{
lro: longrunning.InternalNewOperation(c.LROClient, resp),
}, nil
}
// DropDatabase drops (aka deletes) a Cloud Spanner database.
func (c *DatabaseAdminClient) DropDatabase(ctx context.Context, req *databasepb.DropDatabaseRequest, opts ...gax.CallOption) error {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.DropDatabase[0:len(c.CallOptions.DropDatabase):len(c.CallOptions.DropDatabase)], opts...)
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
_, err = c.databaseAdminClient.DropDatabase(ctx, req, settings.GRPC...)
return err
}, opts...)
return err
}
// GetDatabaseDdl returns the schema of a Cloud Spanner database as a list of formatted
// DDL statements. This method does not show pending schema updates, those may
// be queried using the [Operations][google.longrunning.Operations] API.
func (c *DatabaseAdminClient) GetDatabaseDdl(ctx context.Context, req *databasepb.GetDatabaseDdlRequest, opts ...gax.CallOption) (*databasepb.GetDatabaseDdlResponse, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.GetDatabaseDdl[0:len(c.CallOptions.GetDatabaseDdl):len(c.CallOptions.GetDatabaseDdl)], opts...)
var resp *databasepb.GetDatabaseDdlResponse
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.GetDatabaseDdl(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
// SetIamPolicy sets the access control policy on a database resource. Replaces any
// existing policy.
//
// Authorization requires spanner.databases.setIamPolicy permission on
// [resource][google.iam.v1.SetIamPolicyRequest.resource].
func (c *DatabaseAdminClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.SetIamPolicy[0:len(c.CallOptions.SetIamPolicy):len(c.CallOptions.SetIamPolicy)], opts...)
var resp *iampb.Policy
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.SetIamPolicy(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
// GetIamPolicy gets the access control policy for a database resource. Returns an empty
// policy if a database exists but does not have a policy set.
//
// Authorization requires spanner.databases.getIamPolicy permission on
// [resource][google.iam.v1.GetIamPolicyRequest.resource].
func (c *DatabaseAdminClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.GetIamPolicy[0:len(c.CallOptions.GetIamPolicy):len(c.CallOptions.GetIamPolicy)], opts...)
var resp *iampb.Policy
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.GetIamPolicy(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
// TestIamPermissions returns permissions that the caller has on the specified database resource.
//
// Attempting this RPC on a non-existent Cloud Spanner database will result in
// a NOT_FOUND error if the user has spanner.databases.list permission on
// the containing Cloud Spanner instance. Otherwise returns an empty set of
// permissions.
func (c *DatabaseAdminClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
opts = append(c.CallOptions.TestIamPermissions[0:len(c.CallOptions.TestIamPermissions):len(c.CallOptions.TestIamPermissions)], opts...)
var resp *iampb.TestIamPermissionsResponse
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.databaseAdminClient.TestIamPermissions(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
// DatabaseIterator manages a stream of *databasepb.Database.
type DatabaseIterator struct {
items []*databasepb.Database
pageInfo *iterator.PageInfo
nextFunc func() error
// InternalFetch is for use by the Google Cloud Libraries only.
// It is not part of the stable interface of this package.
//
// InternalFetch returns results from a single call to the underlying RPC.
// The number of results is no greater than pageSize.
// If there are no more results, nextPageToken is empty and err is nil.
InternalFetch func(pageSize int, pageToken string) (results []*databasepb.Database, nextPageToken string, err error)
}
// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *DatabaseIterator) PageInfo() *iterator.PageInfo {
return it.pageInfo
}
// Next returns the next result. Its second return value is iterator.Done if there are no more
// results. Once Next returns Done, all subsequent calls will return Done.
func (it *DatabaseIterator) Next() (*databasepb.Database, error) {
var item *databasepb.Database
if err := it.nextFunc(); err != nil {
return item, err
}
item = it.items[0]
it.items = it.items[1:]
return item, nil
}
func (it *DatabaseIterator) bufLen() int {
return len(it.items)
}
func (it *DatabaseIterator) takeBuf() interface{} {
b := it.items
it.items = nil
return b
}
// CreateDatabaseOperation manages a long-running operation from CreateDatabase.
type CreateDatabaseOperation struct {
lro *longrunning.Operation
}
// CreateDatabaseOperation returns a new CreateDatabaseOperation from a given name.
// The name must be that of a previously created CreateDatabaseOperation, possibly from a different process.
func (c *DatabaseAdminClient) CreateDatabaseOperation(name string) *CreateDatabaseOperation {
return &CreateDatabaseOperation{
lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
}
}
// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
//
// See documentation of Poll for error-handling information.
func (op *CreateDatabaseOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*databasepb.Database, error) {
var resp databasepb.Database
if err := op.lro.WaitWithInterval(ctx, &resp, 45000*time.Millisecond, opts...); err != nil {
return nil, err
}
return &resp, nil
}
// Poll fetches the latest state of the long-running operation.
//
// Poll also fetches the latest metadata, which can be retrieved by Metadata.
//
// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
// the operation has completed with failure, the error is returned and op.Done will return true.
// If Poll succeeds and the operation has completed successfully,
// op.Done will return true, and the response of the operation is returned.
// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
func (op *CreateDatabaseOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*databasepb.Database, error) {
var resp databasepb.Database
if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
return nil, err
}
if !op.Done() {
return nil, nil
}
return &resp, nil
}
// Metadata returns metadata associated with the long-running operation.
// Metadata itself does not contact the server, but Poll does.
// To get the latest metadata, call this method after a successful call to Poll.
// If the metadata is not available, the returned metadata and error are both nil.
func (op *CreateDatabaseOperation) Metadata() (*databasepb.CreateDatabaseMetadata, error) {
var meta databasepb.CreateDatabaseMetadata
if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
return nil, nil
} else if err != nil {
return nil, err
}
return &meta, nil
}
// Done reports whether the long-running operation has completed.
func (op *CreateDatabaseOperation) Done() bool {
return op.lro.Done()
}
// Name returns the name of the long-running operation.
// The name is assigned by the server and is unique within the service from which the operation is created.
func (op *CreateDatabaseOperation) Name() string {
return op.lro.Name()
}
// UpdateDatabaseDdlOperation manages a long-running operation from UpdateDatabaseDdl.
type UpdateDatabaseDdlOperation struct {
lro *longrunning.Operation
}
// UpdateDatabaseDdlOperation returns a new UpdateDatabaseDdlOperation from a given name.
// The name must be that of a previously created UpdateDatabaseDdlOperation, possibly from a different process.
func (c *DatabaseAdminClient) UpdateDatabaseDdlOperation(name string) *UpdateDatabaseDdlOperation {
return &UpdateDatabaseDdlOperation{
lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
}
}
// Wait blocks until the long-running operation is completed, returning any error encountered.
//
// See documentation of Poll for error-handling information.
func (op *UpdateDatabaseDdlOperation) Wait(ctx context.Context, opts ...gax.CallOption) error {
return op.lro.WaitWithInterval(ctx, nil, 45000*time.Millisecond, opts...)
}
// Poll fetches the latest state of the long-running operation.
//
// Poll also fetches the latest metadata, which can be retrieved by Metadata.
//
// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
// the operation has completed with failure, the error is returned and op.Done will return true.
// If Poll succeeds and the operation has completed successfully, op.Done will return true.
func (op *UpdateDatabaseDdlOperation) Poll(ctx context.Context, opts ...gax.CallOption) error {
return op.lro.Poll(ctx, nil, opts...)
}
// Metadata returns metadata associated with the long-running operation.
// Metadata itself does not contact the server, but Poll does.
// To get the latest metadata, call this method after a successful call to Poll.
// If the metadata is not available, the returned metadata and error are both nil.
func (op *UpdateDatabaseDdlOperation) Metadata() (*databasepb.UpdateDatabaseDdlMetadata, error) {
var meta databasepb.UpdateDatabaseDdlMetadata
if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
return nil, nil
} else if err != nil {
return nil, err
}
return &meta, nil
}
// Done reports whether the long-running operation has completed.
func (op *UpdateDatabaseDdlOperation) Done() bool {
return op.lro.Done()
}
// Name returns the name of the long-running operation.
// The name is assigned by the server and is unique within the service from which the operation is created.
func (op *UpdateDatabaseDdlOperation) Name() string {
return op.lro.Name()
}
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