| // Copyright 2020 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 |
| // |
| // http://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. |
| |
| // Code generated by protoc-gen-go. DO NOT EDIT. |
| // versions: |
| // protoc-gen-go v1.22.0 |
| // protoc v3.12.3 |
| // source: google/spanner/v1/transaction.proto |
| |
| package spanner |
| |
| import ( |
| reflect "reflect" |
| sync "sync" |
| |
| proto "github.com/golang/protobuf/proto" |
| duration "github.com/golang/protobuf/ptypes/duration" |
| timestamp "github.com/golang/protobuf/ptypes/timestamp" |
| _ "google.golang.org/genproto/googleapis/api/annotations" |
| protoreflect "google.golang.org/protobuf/reflect/protoreflect" |
| protoimpl "google.golang.org/protobuf/runtime/protoimpl" |
| ) |
| |
| const ( |
| // Verify that this generated code is sufficiently up-to-date. |
| _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) |
| // Verify that runtime/protoimpl is sufficiently up-to-date. |
| _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) |
| ) |
| |
| // This is a compile-time assertion that a sufficiently up-to-date version |
| // of the legacy proto package is being used. |
| const _ = proto.ProtoPackageIsVersion4 |
| |
| // # Transactions |
| // |
| // |
| // Each session can have at most one active transaction at a time. After the |
| // active transaction is completed, the session can immediately be |
| // re-used for the next transaction. It is not necessary to create a |
| // new session for each transaction. |
| // |
| // # Transaction Modes |
| // |
| // Cloud Spanner supports three transaction modes: |
| // |
| // 1. Locking read-write. This type of transaction is the only way |
| // to write data into Cloud Spanner. These transactions rely on |
| // pessimistic locking and, if necessary, two-phase commit. |
| // Locking read-write transactions may abort, requiring the |
| // application to retry. |
| // |
| // 2. Snapshot read-only. This transaction type provides guaranteed |
| // consistency across several reads, but does not allow |
| // writes. Snapshot read-only transactions can be configured to |
| // read at timestamps in the past. Snapshot read-only |
| // transactions do not need to be committed. |
| // |
| // 3. Partitioned DML. This type of transaction is used to execute |
| // a single Partitioned DML statement. Partitioned DML partitions |
| // the key space and runs the DML statement over each partition |
| // in parallel using separate, internal transactions that commit |
| // independently. Partitioned DML transactions do not need to be |
| // committed. |
| // |
| // For transactions that only read, snapshot read-only transactions |
| // provide simpler semantics and are almost always faster. In |
| // particular, read-only transactions do not take locks, so they do |
| // not conflict with read-write transactions. As a consequence of not |
| // taking locks, they also do not abort, so retry loops are not needed. |
| // |
| // Transactions may only read/write data in a single database. They |
| // may, however, read/write data in different tables within that |
| // database. |
| // |
| // ## Locking Read-Write Transactions |
| // |
| // Locking transactions may be used to atomically read-modify-write |
| // data anywhere in a database. This type of transaction is externally |
| // consistent. |
| // |
| // Clients should attempt to minimize the amount of time a transaction |
| // is active. Faster transactions commit with higher probability |
| // and cause less contention. Cloud Spanner attempts to keep read locks |
| // active as long as the transaction continues to do reads, and the |
| // transaction has not been terminated by |
| // [Commit][google.spanner.v1.Spanner.Commit] or |
| // [Rollback][google.spanner.v1.Spanner.Rollback]. Long periods of |
| // inactivity at the client may cause Cloud Spanner to release a |
| // transaction's locks and abort it. |
| // |
| // Conceptually, a read-write transaction consists of zero or more |
| // reads or SQL statements followed by |
| // [Commit][google.spanner.v1.Spanner.Commit]. At any time before |
| // [Commit][google.spanner.v1.Spanner.Commit], the client can send a |
| // [Rollback][google.spanner.v1.Spanner.Rollback] request to abort the |
| // transaction. |
| // |
| // ### Semantics |
| // |
| // Cloud Spanner can commit the transaction if all read locks it acquired |
| // are still valid at commit time, and it is able to acquire write |
| // locks for all writes. Cloud Spanner can abort the transaction for any |
| // reason. If a commit attempt returns `ABORTED`, Cloud Spanner guarantees |
| // that the transaction has not modified any user data in Cloud Spanner. |
| // |
| // Unless the transaction commits, Cloud Spanner makes no guarantees about |
| // how long the transaction's locks were held for. It is an error to |
| // use Cloud Spanner locks for any sort of mutual exclusion other than |
| // between Cloud Spanner transactions themselves. |
| // |
| // ### Retrying Aborted Transactions |
| // |
| // When a transaction aborts, the application can choose to retry the |
| // whole transaction again. To maximize the chances of successfully |
| // committing the retry, the client should execute the retry in the |
| // same session as the original attempt. The original session's lock |
| // priority increases with each consecutive abort, meaning that each |
| // attempt has a slightly better chance of success than the previous. |
| // |
| // Under some circumstances (e.g., many transactions attempting to |
| // modify the same row(s)), a transaction can abort many times in a |
| // short period before successfully committing. Thus, it is not a good |
| // idea to cap the number of retries a transaction can attempt; |
| // instead, it is better to limit the total amount of wall time spent |
| // retrying. |
| // |
| // ### Idle Transactions |
| // |
| // A transaction is considered idle if it has no outstanding reads or |
| // SQL queries and has not started a read or SQL query within the last 10 |
| // seconds. Idle transactions can be aborted by Cloud Spanner so that they |
| // don't hold on to locks indefinitely. In that case, the commit will |
| // fail with error `ABORTED`. |
| // |
| // If this behavior is undesirable, periodically executing a simple |
| // SQL query in the transaction (e.g., `SELECT 1`) prevents the |
| // transaction from becoming idle. |
| // |
| // ## Snapshot Read-Only Transactions |
| // |
| // Snapshot read-only transactions provides a simpler method than |
| // locking read-write transactions for doing several consistent |
| // reads. However, this type of transaction does not support writes. |
| // |
| // Snapshot transactions do not take locks. Instead, they work by |
| // choosing a Cloud Spanner timestamp, then executing all reads at that |
| // timestamp. Since they do not acquire locks, they do not block |
| // concurrent read-write transactions. |
| // |
| // Unlike locking read-write transactions, snapshot read-only |
| // transactions never abort. They can fail if the chosen read |
| // timestamp is garbage collected; however, the default garbage |
| // collection policy is generous enough that most applications do not |
| // need to worry about this in practice. |
| // |
| // Snapshot read-only transactions do not need to call |
| // [Commit][google.spanner.v1.Spanner.Commit] or |
| // [Rollback][google.spanner.v1.Spanner.Rollback] (and in fact are not |
| // permitted to do so). |
| // |
| // To execute a snapshot transaction, the client specifies a timestamp |
| // bound, which tells Cloud Spanner how to choose a read timestamp. |
| // |
| // The types of timestamp bound are: |
| // |
| // - Strong (the default). |
| // - Bounded staleness. |
| // - Exact staleness. |
| // |
| // If the Cloud Spanner database to be read is geographically distributed, |
| // stale read-only transactions can execute more quickly than strong |
| // or read-write transaction, because they are able to execute far |
| // from the leader replica. |
| // |
| // Each type of timestamp bound is discussed in detail below. |
| // |
| // ### Strong |
| // |
| // Strong reads are guaranteed to see the effects of all transactions |
| // that have committed before the start of the read. Furthermore, all |
| // rows yielded by a single read are consistent with each other -- if |
| // any part of the read observes a transaction, all parts of the read |
| // see the transaction. |
| // |
| // Strong reads are not repeatable: two consecutive strong read-only |
| // transactions might return inconsistent results if there are |
| // concurrent writes. If consistency across reads is required, the |
| // reads should be executed within a transaction or at an exact read |
| // timestamp. |
| // |
| // See [TransactionOptions.ReadOnly.strong][google.spanner.v1.TransactionOptions.ReadOnly.strong]. |
| // |
| // ### Exact Staleness |
| // |
| // These timestamp bounds execute reads at a user-specified |
| // timestamp. Reads at a timestamp are guaranteed to see a consistent |
| // prefix of the global transaction history: they observe |
| // modifications done by all transactions with a commit timestamp <= |
| // the read timestamp, and observe none of the modifications done by |
| // transactions with a larger commit timestamp. They will block until |
| // all conflicting transactions that may be assigned commit timestamps |
| // <= the read timestamp have finished. |
| // |
| // The timestamp can either be expressed as an absolute Cloud Spanner commit |
| // timestamp or a staleness relative to the current time. |
| // |
| // These modes do not require a "negotiation phase" to pick a |
| // timestamp. As a result, they execute slightly faster than the |
| // equivalent boundedly stale concurrency modes. On the other hand, |
| // boundedly stale reads usually return fresher results. |
| // |
| // See [TransactionOptions.ReadOnly.read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.read_timestamp] and |
| // [TransactionOptions.ReadOnly.exact_staleness][google.spanner.v1.TransactionOptions.ReadOnly.exact_staleness]. |
| // |
| // ### Bounded Staleness |
| // |
| // Bounded staleness modes allow Cloud Spanner to pick the read timestamp, |
| // subject to a user-provided staleness bound. Cloud Spanner chooses the |
| // newest timestamp within the staleness bound that allows execution |
| // of the reads at the closest available replica without blocking. |
| // |
| // All rows yielded are consistent with each other -- if any part of |
| // the read observes a transaction, all parts of the read see the |
| // transaction. Boundedly stale reads are not repeatable: two stale |
| // reads, even if they use the same staleness bound, can execute at |
| // different timestamps and thus return inconsistent results. |
| // |
| // Boundedly stale reads execute in two phases: the first phase |
| // negotiates a timestamp among all replicas needed to serve the |
| // read. In the second phase, reads are executed at the negotiated |
| // timestamp. |
| // |
| // As a result of the two phase execution, bounded staleness reads are |
| // usually a little slower than comparable exact staleness |
| // reads. However, they are typically able to return fresher |
| // results, and are more likely to execute at the closest replica. |
| // |
| // Because the timestamp negotiation requires up-front knowledge of |
| // which rows will be read, it can only be used with single-use |
| // read-only transactions. |
| // |
| // See [TransactionOptions.ReadOnly.max_staleness][google.spanner.v1.TransactionOptions.ReadOnly.max_staleness] and |
| // [TransactionOptions.ReadOnly.min_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.min_read_timestamp]. |
| // |
| // ### Old Read Timestamps and Garbage Collection |
| // |
| // Cloud Spanner continuously garbage collects deleted and overwritten data |
| // in the background to reclaim storage space. This process is known |
| // as "version GC". By default, version GC reclaims versions after they |
| // are one hour old. Because of this, Cloud Spanner cannot perform reads |
| // at read timestamps more than one hour in the past. This |
| // restriction also applies to in-progress reads and/or SQL queries whose |
| // timestamp become too old while executing. Reads and SQL queries with |
| // too-old read timestamps fail with the error `FAILED_PRECONDITION`. |
| // |
| // ## Partitioned DML Transactions |
| // |
| // Partitioned DML transactions are used to execute DML statements with a |
| // different execution strategy that provides different, and often better, |
| // scalability properties for large, table-wide operations than DML in a |
| // ReadWrite transaction. Smaller scoped statements, such as an OLTP workload, |
| // should prefer using ReadWrite transactions. |
| // |
| // Partitioned DML partitions the keyspace and runs the DML statement on each |
| // partition in separate, internal transactions. These transactions commit |
| // automatically when complete, and run independently from one another. |
| // |
| // To reduce lock contention, this execution strategy only acquires read locks |
| // on rows that match the WHERE clause of the statement. Additionally, the |
| // smaller per-partition transactions hold locks for less time. |
| // |
| // That said, Partitioned DML is not a drop-in replacement for standard DML used |
| // in ReadWrite transactions. |
| // |
| // - The DML statement must be fully-partitionable. Specifically, the statement |
| // must be expressible as the union of many statements which each access only |
| // a single row of the table. |
| // |
| // - The statement is not applied atomically to all rows of the table. Rather, |
| // the statement is applied atomically to partitions of the table, in |
| // independent transactions. Secondary index rows are updated atomically |
| // with the base table rows. |
| // |
| // - Partitioned DML does not guarantee exactly-once execution semantics |
| // against a partition. The statement will be applied at least once to each |
| // partition. It is strongly recommended that the DML statement should be |
| // idempotent to avoid unexpected results. For instance, it is potentially |
| // dangerous to run a statement such as |
| // `UPDATE table SET column = column + 1` as it could be run multiple times |
| // against some rows. |
| // |
| // - The partitions are committed automatically - there is no support for |
| // Commit or Rollback. If the call returns an error, or if the client issuing |
| // the ExecuteSql call dies, it is possible that some rows had the statement |
| // executed on them successfully. It is also possible that statement was |
| // never executed against other rows. |
| // |
| // - Partitioned DML transactions may only contain the execution of a single |
| // DML statement via ExecuteSql or ExecuteStreamingSql. |
| // |
| // - If any error is encountered during the execution of the partitioned DML |
| // operation (for instance, a UNIQUE INDEX violation, division by zero, or a |
| // value that cannot be stored due to schema constraints), then the |
| // operation is stopped at that point and an error is returned. It is |
| // possible that at this point, some partitions have been committed (or even |
| // committed multiple times), and other partitions have not been run at all. |
| // |
| // Given the above, Partitioned DML is good fit for large, database-wide, |
| // operations that are idempotent, such as deleting old rows from a very large |
| // table. |
| type TransactionOptions struct { |
| state protoimpl.MessageState |
| sizeCache protoimpl.SizeCache |
| unknownFields protoimpl.UnknownFields |
| |
| // Required. The type of transaction. |
| // |
| // Types that are assignable to Mode: |
| // *TransactionOptions_ReadWrite_ |
| // *TransactionOptions_PartitionedDml_ |
| // *TransactionOptions_ReadOnly_ |
| Mode isTransactionOptions_Mode `protobuf_oneof:"mode"` |
| } |
| |
| func (x *TransactionOptions) Reset() { |
| *x = TransactionOptions{} |
| if protoimpl.UnsafeEnabled { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[0] |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| ms.StoreMessageInfo(mi) |
| } |
| } |
| |
| func (x *TransactionOptions) String() string { |
| return protoimpl.X.MessageStringOf(x) |
| } |
| |
| func (*TransactionOptions) ProtoMessage() {} |
| |
| func (x *TransactionOptions) ProtoReflect() protoreflect.Message { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[0] |
| if protoimpl.UnsafeEnabled && x != nil { |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| if ms.LoadMessageInfo() == nil { |
| ms.StoreMessageInfo(mi) |
| } |
| return ms |
| } |
| return mi.MessageOf(x) |
| } |
| |
| // Deprecated: Use TransactionOptions.ProtoReflect.Descriptor instead. |
| func (*TransactionOptions) Descriptor() ([]byte, []int) { |
| return file_google_spanner_v1_transaction_proto_rawDescGZIP(), []int{0} |
| } |
| |
| func (m *TransactionOptions) GetMode() isTransactionOptions_Mode { |
| if m != nil { |
| return m.Mode |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions) GetReadWrite() *TransactionOptions_ReadWrite { |
| if x, ok := x.GetMode().(*TransactionOptions_ReadWrite_); ok { |
| return x.ReadWrite |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions) GetPartitionedDml() *TransactionOptions_PartitionedDml { |
| if x, ok := x.GetMode().(*TransactionOptions_PartitionedDml_); ok { |
| return x.PartitionedDml |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions) GetReadOnly() *TransactionOptions_ReadOnly { |
| if x, ok := x.GetMode().(*TransactionOptions_ReadOnly_); ok { |
| return x.ReadOnly |
| } |
| return nil |
| } |
| |
| type isTransactionOptions_Mode interface { |
| isTransactionOptions_Mode() |
| } |
| |
| type TransactionOptions_ReadWrite_ struct { |
| // Transaction may write. |
| // |
| // Authorization to begin a read-write transaction requires |
| // `spanner.databases.beginOrRollbackReadWriteTransaction` permission |
| // on the `session` resource. |
| ReadWrite *TransactionOptions_ReadWrite `protobuf:"bytes,1,opt,name=read_write,json=readWrite,proto3,oneof"` |
| } |
| |
| type TransactionOptions_PartitionedDml_ struct { |
| // Partitioned DML transaction. |
| // |
| // Authorization to begin a Partitioned DML transaction requires |
| // `spanner.databases.beginPartitionedDmlTransaction` permission |
| // on the `session` resource. |
| PartitionedDml *TransactionOptions_PartitionedDml `protobuf:"bytes,3,opt,name=partitioned_dml,json=partitionedDml,proto3,oneof"` |
| } |
| |
| type TransactionOptions_ReadOnly_ struct { |
| // Transaction will not write. |
| // |
| // Authorization to begin a read-only transaction requires |
| // `spanner.databases.beginReadOnlyTransaction` permission |
| // on the `session` resource. |
| ReadOnly *TransactionOptions_ReadOnly `protobuf:"bytes,2,opt,name=read_only,json=readOnly,proto3,oneof"` |
| } |
| |
| func (*TransactionOptions_ReadWrite_) isTransactionOptions_Mode() {} |
| |
| func (*TransactionOptions_PartitionedDml_) isTransactionOptions_Mode() {} |
| |
| func (*TransactionOptions_ReadOnly_) isTransactionOptions_Mode() {} |
| |
| // A transaction. |
| type Transaction struct { |
| state protoimpl.MessageState |
| sizeCache protoimpl.SizeCache |
| unknownFields protoimpl.UnknownFields |
| |
| // `id` may be used to identify the transaction in subsequent |
| // [Read][google.spanner.v1.Spanner.Read], |
| // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], |
| // [Commit][google.spanner.v1.Spanner.Commit], or |
| // [Rollback][google.spanner.v1.Spanner.Rollback] calls. |
| // |
| // Single-use read-only transactions do not have IDs, because |
| // single-use transactions do not support multiple requests. |
| Id []byte `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"` |
| // For snapshot read-only transactions, the read timestamp chosen |
| // for the transaction. Not returned by default: see |
| // [TransactionOptions.ReadOnly.return_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.return_read_timestamp]. |
| // |
| // A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds. |
| // Example: `"2014-10-02T15:01:23.045123456Z"`. |
| ReadTimestamp *timestamp.Timestamp `protobuf:"bytes,2,opt,name=read_timestamp,json=readTimestamp,proto3" json:"read_timestamp,omitempty"` |
| } |
| |
| func (x *Transaction) Reset() { |
| *x = Transaction{} |
| if protoimpl.UnsafeEnabled { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[1] |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| ms.StoreMessageInfo(mi) |
| } |
| } |
| |
| func (x *Transaction) String() string { |
| return protoimpl.X.MessageStringOf(x) |
| } |
| |
| func (*Transaction) ProtoMessage() {} |
| |
| func (x *Transaction) ProtoReflect() protoreflect.Message { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[1] |
| if protoimpl.UnsafeEnabled && x != nil { |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| if ms.LoadMessageInfo() == nil { |
| ms.StoreMessageInfo(mi) |
| } |
| return ms |
| } |
| return mi.MessageOf(x) |
| } |
| |
| // Deprecated: Use Transaction.ProtoReflect.Descriptor instead. |
| func (*Transaction) Descriptor() ([]byte, []int) { |
| return file_google_spanner_v1_transaction_proto_rawDescGZIP(), []int{1} |
| } |
| |
| func (x *Transaction) GetId() []byte { |
| if x != nil { |
| return x.Id |
| } |
| return nil |
| } |
| |
| func (x *Transaction) GetReadTimestamp() *timestamp.Timestamp { |
| if x != nil { |
| return x.ReadTimestamp |
| } |
| return nil |
| } |
| |
| // This message is used to select the transaction in which a |
| // [Read][google.spanner.v1.Spanner.Read] or |
| // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] call runs. |
| // |
| // See [TransactionOptions][google.spanner.v1.TransactionOptions] for more information about transactions. |
| type TransactionSelector struct { |
| state protoimpl.MessageState |
| sizeCache protoimpl.SizeCache |
| unknownFields protoimpl.UnknownFields |
| |
| // If no fields are set, the default is a single use transaction |
| // with strong concurrency. |
| // |
| // Types that are assignable to Selector: |
| // *TransactionSelector_SingleUse |
| // *TransactionSelector_Id |
| // *TransactionSelector_Begin |
| Selector isTransactionSelector_Selector `protobuf_oneof:"selector"` |
| } |
| |
| func (x *TransactionSelector) Reset() { |
| *x = TransactionSelector{} |
| if protoimpl.UnsafeEnabled { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[2] |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| ms.StoreMessageInfo(mi) |
| } |
| } |
| |
| func (x *TransactionSelector) String() string { |
| return protoimpl.X.MessageStringOf(x) |
| } |
| |
| func (*TransactionSelector) ProtoMessage() {} |
| |
| func (x *TransactionSelector) ProtoReflect() protoreflect.Message { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[2] |
| if protoimpl.UnsafeEnabled && x != nil { |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| if ms.LoadMessageInfo() == nil { |
| ms.StoreMessageInfo(mi) |
| } |
| return ms |
| } |
| return mi.MessageOf(x) |
| } |
| |
| // Deprecated: Use TransactionSelector.ProtoReflect.Descriptor instead. |
| func (*TransactionSelector) Descriptor() ([]byte, []int) { |
| return file_google_spanner_v1_transaction_proto_rawDescGZIP(), []int{2} |
| } |
| |
| func (m *TransactionSelector) GetSelector() isTransactionSelector_Selector { |
| if m != nil { |
| return m.Selector |
| } |
| return nil |
| } |
| |
| func (x *TransactionSelector) GetSingleUse() *TransactionOptions { |
| if x, ok := x.GetSelector().(*TransactionSelector_SingleUse); ok { |
| return x.SingleUse |
| } |
| return nil |
| } |
| |
| func (x *TransactionSelector) GetId() []byte { |
| if x, ok := x.GetSelector().(*TransactionSelector_Id); ok { |
| return x.Id |
| } |
| return nil |
| } |
| |
| func (x *TransactionSelector) GetBegin() *TransactionOptions { |
| if x, ok := x.GetSelector().(*TransactionSelector_Begin); ok { |
| return x.Begin |
| } |
| return nil |
| } |
| |
| type isTransactionSelector_Selector interface { |
| isTransactionSelector_Selector() |
| } |
| |
| type TransactionSelector_SingleUse struct { |
| // Execute the read or SQL query in a temporary transaction. |
| // This is the most efficient way to execute a transaction that |
| // consists of a single SQL query. |
| SingleUse *TransactionOptions `protobuf:"bytes,1,opt,name=single_use,json=singleUse,proto3,oneof"` |
| } |
| |
| type TransactionSelector_Id struct { |
| // Execute the read or SQL query in a previously-started transaction. |
| Id []byte `protobuf:"bytes,2,opt,name=id,proto3,oneof"` |
| } |
| |
| type TransactionSelector_Begin struct { |
| // Begin a new transaction and execute this read or SQL query in |
| // it. The transaction ID of the new transaction is returned in |
| // [ResultSetMetadata.transaction][google.spanner.v1.ResultSetMetadata.transaction], which is a [Transaction][google.spanner.v1.Transaction]. |
| Begin *TransactionOptions `protobuf:"bytes,3,opt,name=begin,proto3,oneof"` |
| } |
| |
| func (*TransactionSelector_SingleUse) isTransactionSelector_Selector() {} |
| |
| func (*TransactionSelector_Id) isTransactionSelector_Selector() {} |
| |
| func (*TransactionSelector_Begin) isTransactionSelector_Selector() {} |
| |
| // Message type to initiate a read-write transaction. Currently this |
| // transaction type has no options. |
| type TransactionOptions_ReadWrite struct { |
| state protoimpl.MessageState |
| sizeCache protoimpl.SizeCache |
| unknownFields protoimpl.UnknownFields |
| } |
| |
| func (x *TransactionOptions_ReadWrite) Reset() { |
| *x = TransactionOptions_ReadWrite{} |
| if protoimpl.UnsafeEnabled { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[3] |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| ms.StoreMessageInfo(mi) |
| } |
| } |
| |
| func (x *TransactionOptions_ReadWrite) String() string { |
| return protoimpl.X.MessageStringOf(x) |
| } |
| |
| func (*TransactionOptions_ReadWrite) ProtoMessage() {} |
| |
| func (x *TransactionOptions_ReadWrite) ProtoReflect() protoreflect.Message { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[3] |
| if protoimpl.UnsafeEnabled && x != nil { |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| if ms.LoadMessageInfo() == nil { |
| ms.StoreMessageInfo(mi) |
| } |
| return ms |
| } |
| return mi.MessageOf(x) |
| } |
| |
| // Deprecated: Use TransactionOptions_ReadWrite.ProtoReflect.Descriptor instead. |
| func (*TransactionOptions_ReadWrite) Descriptor() ([]byte, []int) { |
| return file_google_spanner_v1_transaction_proto_rawDescGZIP(), []int{0, 0} |
| } |
| |
| // Message type to initiate a Partitioned DML transaction. |
| type TransactionOptions_PartitionedDml struct { |
| state protoimpl.MessageState |
| sizeCache protoimpl.SizeCache |
| unknownFields protoimpl.UnknownFields |
| } |
| |
| func (x *TransactionOptions_PartitionedDml) Reset() { |
| *x = TransactionOptions_PartitionedDml{} |
| if protoimpl.UnsafeEnabled { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[4] |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| ms.StoreMessageInfo(mi) |
| } |
| } |
| |
| func (x *TransactionOptions_PartitionedDml) String() string { |
| return protoimpl.X.MessageStringOf(x) |
| } |
| |
| func (*TransactionOptions_PartitionedDml) ProtoMessage() {} |
| |
| func (x *TransactionOptions_PartitionedDml) ProtoReflect() protoreflect.Message { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[4] |
| if protoimpl.UnsafeEnabled && x != nil { |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| if ms.LoadMessageInfo() == nil { |
| ms.StoreMessageInfo(mi) |
| } |
| return ms |
| } |
| return mi.MessageOf(x) |
| } |
| |
| // Deprecated: Use TransactionOptions_PartitionedDml.ProtoReflect.Descriptor instead. |
| func (*TransactionOptions_PartitionedDml) Descriptor() ([]byte, []int) { |
| return file_google_spanner_v1_transaction_proto_rawDescGZIP(), []int{0, 1} |
| } |
| |
| // Message type to initiate a read-only transaction. |
| type TransactionOptions_ReadOnly struct { |
| state protoimpl.MessageState |
| sizeCache protoimpl.SizeCache |
| unknownFields protoimpl.UnknownFields |
| |
| // How to choose the timestamp for the read-only transaction. |
| // |
| // Types that are assignable to TimestampBound: |
| // *TransactionOptions_ReadOnly_Strong |
| // *TransactionOptions_ReadOnly_MinReadTimestamp |
| // *TransactionOptions_ReadOnly_MaxStaleness |
| // *TransactionOptions_ReadOnly_ReadTimestamp |
| // *TransactionOptions_ReadOnly_ExactStaleness |
| TimestampBound isTransactionOptions_ReadOnly_TimestampBound `protobuf_oneof:"timestamp_bound"` |
| // If true, the Cloud Spanner-selected read timestamp is included in |
| // the [Transaction][google.spanner.v1.Transaction] message that describes the transaction. |
| ReturnReadTimestamp bool `protobuf:"varint,6,opt,name=return_read_timestamp,json=returnReadTimestamp,proto3" json:"return_read_timestamp,omitempty"` |
| } |
| |
| func (x *TransactionOptions_ReadOnly) Reset() { |
| *x = TransactionOptions_ReadOnly{} |
| if protoimpl.UnsafeEnabled { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[5] |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| ms.StoreMessageInfo(mi) |
| } |
| } |
| |
| func (x *TransactionOptions_ReadOnly) String() string { |
| return protoimpl.X.MessageStringOf(x) |
| } |
| |
| func (*TransactionOptions_ReadOnly) ProtoMessage() {} |
| |
| func (x *TransactionOptions_ReadOnly) ProtoReflect() protoreflect.Message { |
| mi := &file_google_spanner_v1_transaction_proto_msgTypes[5] |
| if protoimpl.UnsafeEnabled && x != nil { |
| ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) |
| if ms.LoadMessageInfo() == nil { |
| ms.StoreMessageInfo(mi) |
| } |
| return ms |
| } |
| return mi.MessageOf(x) |
| } |
| |
| // Deprecated: Use TransactionOptions_ReadOnly.ProtoReflect.Descriptor instead. |
| func (*TransactionOptions_ReadOnly) Descriptor() ([]byte, []int) { |
| return file_google_spanner_v1_transaction_proto_rawDescGZIP(), []int{0, 2} |
| } |
| |
| func (m *TransactionOptions_ReadOnly) GetTimestampBound() isTransactionOptions_ReadOnly_TimestampBound { |
| if m != nil { |
| return m.TimestampBound |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions_ReadOnly) GetStrong() bool { |
| if x, ok := x.GetTimestampBound().(*TransactionOptions_ReadOnly_Strong); ok { |
| return x.Strong |
| } |
| return false |
| } |
| |
| func (x *TransactionOptions_ReadOnly) GetMinReadTimestamp() *timestamp.Timestamp { |
| if x, ok := x.GetTimestampBound().(*TransactionOptions_ReadOnly_MinReadTimestamp); ok { |
| return x.MinReadTimestamp |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions_ReadOnly) GetMaxStaleness() *duration.Duration { |
| if x, ok := x.GetTimestampBound().(*TransactionOptions_ReadOnly_MaxStaleness); ok { |
| return x.MaxStaleness |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions_ReadOnly) GetReadTimestamp() *timestamp.Timestamp { |
| if x, ok := x.GetTimestampBound().(*TransactionOptions_ReadOnly_ReadTimestamp); ok { |
| return x.ReadTimestamp |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions_ReadOnly) GetExactStaleness() *duration.Duration { |
| if x, ok := x.GetTimestampBound().(*TransactionOptions_ReadOnly_ExactStaleness); ok { |
| return x.ExactStaleness |
| } |
| return nil |
| } |
| |
| func (x *TransactionOptions_ReadOnly) GetReturnReadTimestamp() bool { |
| if x != nil { |
| return x.ReturnReadTimestamp |
| } |
| return false |
| } |
| |
| type isTransactionOptions_ReadOnly_TimestampBound interface { |
| isTransactionOptions_ReadOnly_TimestampBound() |
| } |
| |
| type TransactionOptions_ReadOnly_Strong struct { |
| // Read at a timestamp where all previously committed transactions |
| // are visible. |
| Strong bool `protobuf:"varint,1,opt,name=strong,proto3,oneof"` |
| } |
| |
| type TransactionOptions_ReadOnly_MinReadTimestamp struct { |
| // Executes all reads at a timestamp >= `min_read_timestamp`. |
| // |
| // This is useful for requesting fresher data than some previous |
| // read, or data that is fresh enough to observe the effects of some |
| // previously committed transaction whose timestamp is known. |
| // |
| // Note that this option can only be used in single-use transactions. |
| // |
| // A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds. |
| // Example: `"2014-10-02T15:01:23.045123456Z"`. |
| MinReadTimestamp *timestamp.Timestamp `protobuf:"bytes,2,opt,name=min_read_timestamp,json=minReadTimestamp,proto3,oneof"` |
| } |
| |
| type TransactionOptions_ReadOnly_MaxStaleness struct { |
| // Read data at a timestamp >= `NOW - max_staleness` |
| // seconds. Guarantees that all writes that have committed more |
| // than the specified number of seconds ago are visible. Because |
| // Cloud Spanner chooses the exact timestamp, this mode works even if |
| // the client's local clock is substantially skewed from Cloud Spanner |
| // commit timestamps. |
| // |
| // Useful for reading the freshest data available at a nearby |
| // replica, while bounding the possible staleness if the local |
| // replica has fallen behind. |
| // |
| // Note that this option can only be used in single-use |
| // transactions. |
| MaxStaleness *duration.Duration `protobuf:"bytes,3,opt,name=max_staleness,json=maxStaleness,proto3,oneof"` |
| } |
| |
| type TransactionOptions_ReadOnly_ReadTimestamp struct { |
| // Executes all reads at the given timestamp. Unlike other modes, |
| // reads at a specific timestamp are repeatable; the same read at |
| // the same timestamp always returns the same data. If the |
| // timestamp is in the future, the read will block until the |
| // specified timestamp, modulo the read's deadline. |
| // |
| // Useful for large scale consistent reads such as mapreduces, or |
| // for coordinating many reads against a consistent snapshot of the |
| // data. |
| // |
| // A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds. |
| // Example: `"2014-10-02T15:01:23.045123456Z"`. |
| ReadTimestamp *timestamp.Timestamp `protobuf:"bytes,4,opt,name=read_timestamp,json=readTimestamp,proto3,oneof"` |
| } |
| |
| type TransactionOptions_ReadOnly_ExactStaleness struct { |
| // Executes all reads at a timestamp that is `exact_staleness` |
| // old. The timestamp is chosen soon after the read is started. |
| // |
| // Guarantees that all writes that have committed more than the |
| // specified number of seconds ago are visible. Because Cloud Spanner |
| // chooses the exact timestamp, this mode works even if the client's |
| // local clock is substantially skewed from Cloud Spanner commit |
| // timestamps. |
| // |
| // Useful for reading at nearby replicas without the distributed |
| // timestamp negotiation overhead of `max_staleness`. |
| ExactStaleness *duration.Duration `protobuf:"bytes,5,opt,name=exact_staleness,json=exactStaleness,proto3,oneof"` |
| } |
| |
| func (*TransactionOptions_ReadOnly_Strong) isTransactionOptions_ReadOnly_TimestampBound() {} |
| |
| func (*TransactionOptions_ReadOnly_MinReadTimestamp) isTransactionOptions_ReadOnly_TimestampBound() {} |
| |
| func (*TransactionOptions_ReadOnly_MaxStaleness) isTransactionOptions_ReadOnly_TimestampBound() {} |
| |
| func (*TransactionOptions_ReadOnly_ReadTimestamp) isTransactionOptions_ReadOnly_TimestampBound() {} |
| |
| func (*TransactionOptions_ReadOnly_ExactStaleness) isTransactionOptions_ReadOnly_TimestampBound() {} |
| |
| var File_google_spanner_v1_transaction_proto protoreflect.FileDescriptor |
| |
| var file_google_spanner_v1_transaction_proto_rawDesc = []byte{ |
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| } |
| |
| var ( |
| file_google_spanner_v1_transaction_proto_rawDescOnce sync.Once |
| file_google_spanner_v1_transaction_proto_rawDescData = file_google_spanner_v1_transaction_proto_rawDesc |
| ) |
| |
| func file_google_spanner_v1_transaction_proto_rawDescGZIP() []byte { |
| file_google_spanner_v1_transaction_proto_rawDescOnce.Do(func() { |
| file_google_spanner_v1_transaction_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_spanner_v1_transaction_proto_rawDescData) |
| }) |
| return file_google_spanner_v1_transaction_proto_rawDescData |
| } |
| |
| var file_google_spanner_v1_transaction_proto_msgTypes = make([]protoimpl.MessageInfo, 6) |
| var file_google_spanner_v1_transaction_proto_goTypes = []interface{}{ |
| (*TransactionOptions)(nil), // 0: google.spanner.v1.TransactionOptions |
| (*Transaction)(nil), // 1: google.spanner.v1.Transaction |
| (*TransactionSelector)(nil), // 2: google.spanner.v1.TransactionSelector |
| (*TransactionOptions_ReadWrite)(nil), // 3: google.spanner.v1.TransactionOptions.ReadWrite |
| (*TransactionOptions_PartitionedDml)(nil), // 4: google.spanner.v1.TransactionOptions.PartitionedDml |
| (*TransactionOptions_ReadOnly)(nil), // 5: google.spanner.v1.TransactionOptions.ReadOnly |
| (*timestamp.Timestamp)(nil), // 6: google.protobuf.Timestamp |
| (*duration.Duration)(nil), // 7: google.protobuf.Duration |
| } |
| var file_google_spanner_v1_transaction_proto_depIdxs = []int32{ |
| 3, // 0: google.spanner.v1.TransactionOptions.read_write:type_name -> google.spanner.v1.TransactionOptions.ReadWrite |
| 4, // 1: google.spanner.v1.TransactionOptions.partitioned_dml:type_name -> google.spanner.v1.TransactionOptions.PartitionedDml |
| 5, // 2: google.spanner.v1.TransactionOptions.read_only:type_name -> google.spanner.v1.TransactionOptions.ReadOnly |
| 6, // 3: google.spanner.v1.Transaction.read_timestamp:type_name -> google.protobuf.Timestamp |
| 0, // 4: google.spanner.v1.TransactionSelector.single_use:type_name -> google.spanner.v1.TransactionOptions |
| 0, // 5: google.spanner.v1.TransactionSelector.begin:type_name -> google.spanner.v1.TransactionOptions |
| 6, // 6: google.spanner.v1.TransactionOptions.ReadOnly.min_read_timestamp:type_name -> google.protobuf.Timestamp |
| 7, // 7: google.spanner.v1.TransactionOptions.ReadOnly.max_staleness:type_name -> google.protobuf.Duration |
| 6, // 8: google.spanner.v1.TransactionOptions.ReadOnly.read_timestamp:type_name -> google.protobuf.Timestamp |
| 7, // 9: google.spanner.v1.TransactionOptions.ReadOnly.exact_staleness:type_name -> google.protobuf.Duration |
| 10, // [10:10] is the sub-list for method output_type |
| 10, // [10:10] is the sub-list for method input_type |
| 10, // [10:10] is the sub-list for extension type_name |
| 10, // [10:10] is the sub-list for extension extendee |
| 0, // [0:10] is the sub-list for field type_name |
| } |
| |
| func init() { file_google_spanner_v1_transaction_proto_init() } |
| func file_google_spanner_v1_transaction_proto_init() { |
| if File_google_spanner_v1_transaction_proto != nil { |
| return |
| } |
| if !protoimpl.UnsafeEnabled { |
| file_google_spanner_v1_transaction_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { |
| switch v := v.(*TransactionOptions); i { |
| case 0: |
| return &v.state |
| case 1: |
| return &v.sizeCache |
| case 2: |
| return &v.unknownFields |
| default: |
| return nil |
| } |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { |
| switch v := v.(*Transaction); i { |
| case 0: |
| return &v.state |
| case 1: |
| return &v.sizeCache |
| case 2: |
| return &v.unknownFields |
| default: |
| return nil |
| } |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { |
| switch v := v.(*TransactionSelector); i { |
| case 0: |
| return &v.state |
| case 1: |
| return &v.sizeCache |
| case 2: |
| return &v.unknownFields |
| default: |
| return nil |
| } |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { |
| switch v := v.(*TransactionOptions_ReadWrite); i { |
| case 0: |
| return &v.state |
| case 1: |
| return &v.sizeCache |
| case 2: |
| return &v.unknownFields |
| default: |
| return nil |
| } |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { |
| switch v := v.(*TransactionOptions_PartitionedDml); i { |
| case 0: |
| return &v.state |
| case 1: |
| return &v.sizeCache |
| case 2: |
| return &v.unknownFields |
| default: |
| return nil |
| } |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} { |
| switch v := v.(*TransactionOptions_ReadOnly); i { |
| case 0: |
| return &v.state |
| case 1: |
| return &v.sizeCache |
| case 2: |
| return &v.unknownFields |
| default: |
| return nil |
| } |
| } |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[0].OneofWrappers = []interface{}{ |
| (*TransactionOptions_ReadWrite_)(nil), |
| (*TransactionOptions_PartitionedDml_)(nil), |
| (*TransactionOptions_ReadOnly_)(nil), |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[2].OneofWrappers = []interface{}{ |
| (*TransactionSelector_SingleUse)(nil), |
| (*TransactionSelector_Id)(nil), |
| (*TransactionSelector_Begin)(nil), |
| } |
| file_google_spanner_v1_transaction_proto_msgTypes[5].OneofWrappers = []interface{}{ |
| (*TransactionOptions_ReadOnly_Strong)(nil), |
| (*TransactionOptions_ReadOnly_MinReadTimestamp)(nil), |
| (*TransactionOptions_ReadOnly_MaxStaleness)(nil), |
| (*TransactionOptions_ReadOnly_ReadTimestamp)(nil), |
| (*TransactionOptions_ReadOnly_ExactStaleness)(nil), |
| } |
| type x struct{} |
| out := protoimpl.TypeBuilder{ |
| File: protoimpl.DescBuilder{ |
| GoPackagePath: reflect.TypeOf(x{}).PkgPath(), |
| RawDescriptor: file_google_spanner_v1_transaction_proto_rawDesc, |
| NumEnums: 0, |
| NumMessages: 6, |
| NumExtensions: 0, |
| NumServices: 0, |
| }, |
| GoTypes: file_google_spanner_v1_transaction_proto_goTypes, |
| DependencyIndexes: file_google_spanner_v1_transaction_proto_depIdxs, |
| MessageInfos: file_google_spanner_v1_transaction_proto_msgTypes, |
| }.Build() |
| File_google_spanner_v1_transaction_proto = out.File |
| file_google_spanner_v1_transaction_proto_rawDesc = nil |
| file_google_spanner_v1_transaction_proto_goTypes = nil |
| file_google_spanner_v1_transaction_proto_depIdxs = nil |
| } |