Cloud BigTable - Package cloud.google.com/go/bigtable (v1.17.0)

Package bigtable is an API to Google Cloud Bigtable.

See https://cloud.google.com/bigtable/docs/ for general product documentation.

See https://godoc.org/cloud.google.com/go for authentication, timeouts, connection pooling and similar aspects of this package.

Reading

The principal way to read from a Bigtable is to use the ReadRows method on *Table. A RowRange specifies a contiguous portion of a table. A Filter may be provided through RowFilter to limit or transform the data that is returned.

tbl := client.Open("mytable")
// Read all the rows starting with "com.google.", but only fetch the columns
// in the "links" family.
rr := bigtable.PrefixRange("com.google.")
err := tbl.ReadRows(ctx, rr, func(r Row) bool {
    // TODO: do something with r.
    return true // Keep going.
}, bigtable.RowFilter(bigtable.FamilyFilter("links")))
if err != nil {
    // TODO: handle err.
}

To read a single row, use the ReadRow helper method:

r, err := tbl.ReadRow(ctx, "com.google.cloud") // "com.google.cloud" is the entire row key
if err != nil {
    // TODO: handle err.
}
// TODO: use r.

Writing

This API exposes two distinct forms of writing to a Bigtable: a Mutation and a ReadModifyWrite. The former expresses idempotent operations. The latter expresses non-idempotent operations and returns the new values of updated cells. These operations are performed by creating a Mutation or ReadModifyWrite (with NewMutation or NewReadModifyWrite), building up one or more operations on that, and then using the Apply or ApplyReadModifyWrite methods on a Table.

For instance, to set a couple of cells in a table:

tbl := client.Open("mytable")
mut := bigtable.NewMutation()
// To use numeric values that will later be incremented,
// they need to be big-endian encoded as 64-bit integers.
buf := new(bytes.Buffer)
initialLinkCount := 1 // The initial number of links.
if err := binary.Write(buf, binary.BigEndian, initialLinkCount); err != nil {
// TODO: handle err.
}
mut.Set("links", "maps.google.com", bigtable.Now(), buf.Bytes())
mut.Set("links", "golang.org", bigtable.Now(), buf.Bytes())
err := tbl.Apply(ctx, "com.google.cloud", mut)
if err != nil {
    // TODO: handle err.
}

To increment an encoded value in one cell:

tbl := client.Open("mytable")
rmw := bigtable.NewReadModifyWrite()
rmw.Increment("links", "golang.org", 12) // add 12 to the cell in column "links:golang.org"
r, err := tbl.ApplyReadModifyWrite(ctx, "com.google.cloud", rmw)
if err != nil {
    // TODO: handle err.
}
// TODO: use r.

Retries

If a read or write operation encounters a transient error it will be retried until a successful response, an unretryable error or the context deadline is reached. Non-idempotent writes (where the timestamp is set to ServerTime) will not be retried. In the case of ReadRows, retried calls will not re-scan rows that have already been processed.

Constants

NotKnown, Ready, Creating

const (
	// NotKnown represents the state of an instance that could not be determined.
	NotKnown InstanceState = InstanceState(btapb.Instance_STATE_NOT_KNOWN)
	// Ready represents the state of an instance that has been successfully created.
	Ready = InstanceState(btapb.Instance_READY)
	// Creating represents the state of an instance that is currently being created.
	Creating = InstanceState(btapb.Instance_CREATING)
)

UNSPECIFIED, PRODUCTION, DEVELOPMENT

const (
	// UNSPECIFIED instance types default to PRODUCTION
	UNSPECIFIED InstanceType = InstanceType(btapb.Instance_TYPE_UNSPECIFIED)
	PRODUCTION               = InstanceType(btapb.Instance_PRODUCTION)
	DEVELOPMENT              = InstanceType(btapb.Instance_DEVELOPMENT)
)

MultiClusterRouting, SingleClusterRouting

const (
	// MultiClusterRouting is a policy that allows read/write requests to be
	// routed to any cluster in the instance. Requests will will fail over to
	// another cluster in the event of transient errors or delays. Choosing
	// this option sacrifices read-your-writes consistency to improve
	// availability.
	MultiClusterRouting = "multi_cluster_routing_use_any"
	// SingleClusterRouting is a policy that unconditionally routes all
	// read/write requests to a specific cluster. This option preserves
	// read-your-writes consistency, but does not improve availability.
	SingleClusterRouting = "single_cluster_routing"
)

Routing policies.

Scope, ReadonlyScope, AdminScope, InstanceAdminScope

const (
	// Scope is the OAuth scope for Cloud Bigtable data operations.
	Scope = "https://www.googleapis.com/auth/bigtable.data"
	// ReadonlyScope is the OAuth scope for Cloud Bigtable read-only data
	// operations.
	ReadonlyScope = "https://www.googleapis.com/auth/bigtable.readonly"

	// AdminScope is the OAuth scope for Cloud Bigtable table admin operations.
	AdminScope = "https://www.googleapis.com/auth/bigtable.admin.table"

	// InstanceAdminScope is the OAuth scope for Cloud Bigtable instance (and
	// cluster) admin operations.
	InstanceAdminScope = "https://www.googleapis.com/auth/bigtable.admin.cluster"
)

Scope constants for authentication credentials. These should be used when using credential creation functions such as oauth.NewServiceAccountFromFile.

DefaultSnapshotDuration

const DefaultSnapshotDuration time.Duration = 0

DefaultSnapshotDuration is the default TTL for a snapshot.

Functions

func GCRuleToString

func GCRuleToString(rule *bttdpb.GcRule) string

GCRuleToString converts the given GcRule proto to a user-visible string.

AdminClient

type AdminClient struct {
	// contains filtered or unexported fields
}

AdminClient is a client type for performing admin operations within a specific instance.

func NewAdminClient

func NewAdminClient(ctx context.Context, project, instance string, opts ...option.ClientOption) (*AdminClient, error)

NewAdminClient creates a new AdminClient for a given project and instance.

func (*AdminClient) BackupIAM

func (ac *AdminClient) BackupIAM(cluster, backup string) *iam.Handle

BackupIAM creates an IAM Handle specific to a given Cluster and Backup.

func (*AdminClient) BackupInfo

func (ac *AdminClient) BackupInfo(ctx context.Context, cluster, backup string) (*BackupInfo, error)

BackupInfo gets backup metadata.

func (*AdminClient) Backups

func (ac *AdminClient) Backups(ctx context.Context, cluster string) *BackupIterator

Backups returns a BackupIterator for iterating over the backups in a cluster. To list backups across all of the clusters in the instance specify "-" as the cluster.

func (*AdminClient) Close

func (ac *AdminClient) Close() error

Close closes the AdminClient.

func (*AdminClient) CreateBackup

func (ac *AdminClient) CreateBackup(ctx context.Context, table, cluster, backup string, expireTime time.Time) error

CreateBackup creates a new backup in the specified cluster from the specified source table with the user-provided expire time.

func (*AdminClient) CreateColumnFamily

func (ac *AdminClient) CreateColumnFamily(ctx context.Context, table, family string) error

CreateColumnFamily creates a new column family in a table.

func (*AdminClient) CreatePresplitTable

func (ac *AdminClient) CreatePresplitTable(ctx context.Context, table string, splitKeys []string) error

CreatePresplitTable creates a new table in the instance. The list of row keys will be used to initially split the table into multiple tablets. Given two split keys, "s1" and "s2", three tablets will be created, spanning the key ranges: [, s1), [s1, s2), [s2, ). This method may return before the table's creation is complete.

func (*AdminClient) CreateTable

func (ac *AdminClient) CreateTable(ctx context.Context, table string) error

CreateTable creates a new table in the instance. This method may return before the table's creation is complete.

func (*AdminClient) CreateTableFromConf

func (ac *AdminClient) CreateTableFromConf(ctx context.Context, conf *TableConf) error

CreateTableFromConf creates a new table in the instance from the given configuration.

func (*AdminClient) CreateTableFromSnapshot

func (ac *AdminClient) CreateTableFromSnapshot(ctx context.Context, table, cluster, snapshot string) error

CreateTableFromSnapshot creates a table from snapshot. The table will be created in the same cluster as the snapshot.

This is a private alpha release of Cloud Bigtable snapshots. This feature is not currently available to most Cloud Bigtable customers. This feature might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy.

func (*AdminClient) DeleteBackup

func (ac *AdminClient) DeleteBackup(ctx context.Context, cluster, backup string) error

DeleteBackup deletes a backup in a cluster.

func (*AdminClient) DeleteColumnFamily

func (ac *AdminClient) DeleteColumnFamily(ctx context.Context, table, family string) error

DeleteColumnFamily deletes a column family in a table and all of its data.

func (*AdminClient) DeleteSnapshot

func (ac *AdminClient) DeleteSnapshot(ctx context.Context, cluster, snapshot string) error

DeleteSnapshot deletes a snapshot in a cluster.

func (*AdminClient) DeleteTable

func (ac *AdminClient) DeleteTable(ctx context.Context, table string) error

DeleteTable deletes a table and all of its data.

func (*AdminClient) DropAllRows

func (ac *AdminClient) DropAllRows(ctx context.Context, table string) error

DropAllRows permanently deletes all rows from the specified table.

func (*AdminClient) DropRowRange

func (ac *AdminClient) DropRowRange(ctx context.Context, table, rowKeyPrefix string) error

DropRowRange permanently deletes a row range from the specified table.

func (*AdminClient) EncryptionInfo

func (ac *AdminClient) EncryptionInfo(ctx context.Context, table string) (EncryptionInfoByCluster, error)

EncryptionInfo gets the current encryption info for the table across all of the clusters. The returned map will be keyed by cluster id and contain a status for all of the keys in use.

func (*AdminClient) RestoreTable

func (ac *AdminClient) RestoreTable(ctx context.Context, table, cluster, backup string) error

RestoreTable creates a table from a backup. The table will be created in the same cluster as the backup. To restore a table to a different instance, see RestoreTableFrom.

func (*AdminClient) RestoreTableFrom

func (ac *AdminClient) RestoreTableFrom(ctx context.Context, sourceInstance, table, sourceCluster, backup string) error

RestoreTableFrom creates a new table in the admin's instance by restoring from the given backup and instance. To restore within the same instance, see RestoreTable. sourceInstance (ex. "my-instance") and sourceCluster (ex. "my-cluster") are the instance and cluster in which the new table will be restored from. tableName (ex. "my-restored-table") will be the name of the newly created table. backupName (ex. "my-backup") is the name of the backup to restore.

func (*AdminClient) SetGCPolicy

func (ac *AdminClient) SetGCPolicy(ctx context.Context, table, family string, policy GCPolicy) error

SetGCPolicy specifies which cells in a column family should be garbage collected. GC executes opportunistically in the background; table reads may return data matching the GC policy.

func (*AdminClient) SnapshotInfo

func (ac *AdminClient) SnapshotInfo(ctx context.Context, cluster, snapshot string) (*SnapshotInfo, error)

SnapshotInfo gets snapshot metadata.

func (*AdminClient) SnapshotTable

func (ac *AdminClient) SnapshotTable(ctx context.Context, table, cluster, snapshot string, ttl time.Duration) error

SnapshotTable creates a new snapshot in the specified cluster from the specified source table. Setting the TTL to DefaultSnapshotDuration will use the server side default for the duration.

func (*AdminClient) Snapshots

func (ac *AdminClient) Snapshots(ctx context.Context, cluster string) *SnapshotIterator

Snapshots returns a SnapshotIterator for iterating over the snapshots in a cluster. To list snapshots across all of the clusters in the instance specify "-" as the cluster.

func (*AdminClient) TableIAM

func (ac *AdminClient) TableIAM(tableID string) *iam.Handle

TableIAM creates an IAM Handle specific to a given Instance and Table within the configured project.

func (*AdminClient) TableInfo

func (ac *AdminClient) TableInfo(ctx context.Context, table string) (*TableInfo, error)

TableInfo retrieves information about a table.

func (*AdminClient) Tables

func (ac *AdminClient) Tables(ctx context.Context) ([]string, error)

Tables returns a list of the tables in the instance.

func (*AdminClient) UpdateBackup

func (ac *AdminClient) UpdateBackup(ctx context.Context, cluster, backup string, expireTime time.Time) error

UpdateBackup updates the backup metadata in a cluster. The API only supports updating expire time.

func (*AdminClient) UpdateTableWithDeletionProtection

func (ac *AdminClient) UpdateTableWithDeletionProtection(ctx context.Context, tableID string, deletionProtection DeletionProtection) error

UpdateTableWithDeletionProtection updates a table with the given table ID and deletion protection parameter.

func (*AdminClient) WaitForReplication

func (ac *AdminClient) WaitForReplication(ctx context.Context, table string) error

WaitForReplication waits until all the writes committed before the call started have been propagated to all the clusters in the instance via replication.

ApplyOption

type ApplyOption interface {
	// contains filtered or unexported methods
}

An ApplyOption is an optional argument to Apply.

func GetCondMutationResult

func GetCondMutationResult(matched bool) ApplyOption

GetCondMutationResult returns an ApplyOption that reports whether the conditional mutation's condition matched.

AutoscalingConfig

type AutoscalingConfig struct {
	// MinNodes sets the minumum number of nodes in a cluster. MinNodes must
	// be 1 or greater.
	MinNodes int
	// MaxNodes sets the maximum number of nodes in a cluster. MaxNodes must be
	// equal to or greater than MinNodes.
	MaxNodes int
	// CPUTargetPercent sets the CPU utilization target for your cluster's
	// workload.
	CPUTargetPercent int
	// StorageUtilizationPerNode sets the storage usage target, in GB, for
	// each node in a cluster. This number is limited between 2560 (2.5TiB) and
	// 5120 (5TiB) for a SSD cluster and between 8192 (8TiB) and 16384 (16 TiB)
	// for an HDD cluster. If set to zero, the default values are used:
	// 2560 for SSD and 8192 for HDD.
	StorageUtilizationPerNode int
}

AutoscalingConfig contains autoscaling configuration for a cluster. For details, see https://cloud.google.com/bigtable/docs/autoscaling.

BackupInfo

type BackupInfo struct {
	Name           string
	SourceTable    string
	SizeBytes      int64
	StartTime      time.Time
	EndTime        time.Time
	ExpireTime     time.Time
	State          string
	EncryptionInfo *EncryptionInfo
}

BackupInfo contains backup metadata. This struct is read-only.

BackupIterator

type BackupIterator struct {
	// contains filtered or unexported fields
}

BackupIterator is an EntryIterator that iterates over log entries.

func (*BackupIterator) Next

func (it *BackupIterator) Next() (*BackupInfo, error)

Next returns the next result. Its second return value is iterator.Done (https://godoc.org/google.golang.org/api/iterator) if there are no more results. Once Next returns Done, all subsequent calls will return Done.

func (*BackupIterator) PageInfo

func (it *BackupIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See https://godoc.org/google.golang.org/api/iterator package for details.

Client

type Client struct {
	// contains filtered or unexported fields
}

Client is a client for reading and writing data to tables in an instance.

A Client is safe to use concurrently, except for its Close method.

func NewClient

func NewClient(ctx context.Context, project, instance string, opts ...option.ClientOption) (*Client, error)

NewClient creates a new Client for a given project and instance. The default ClientConfig will be used.

func NewClientWithConfig

func NewClientWithConfig(ctx context.Context, project, instance string, config ClientConfig, opts ...option.ClientOption) (*Client, error)

NewClientWithConfig creates a new client with the given config.

func (*Client) Close

func (c *Client) Close() error

Close closes the Client.

func (*Client) Open

func (c *Client) Open(table string) *Table

Open opens a table.

ClientConfig

type ClientConfig struct {
	// The id of the app profile to associate with all data operations sent from this client.
	// If unspecified, the default app profile for the instance will be used.
	AppProfile string
}

ClientConfig has configurations for the client.

ClusterConfig

type ClusterConfig struct {
	// InstanceID specifies the unique name of the instance. Required.
	InstanceID string

	// ClusterID specifies the unique name of the cluster. Required.
	ClusterID string

	// Zone specifies the location where this cluster's nodes and storage reside.
	// For best performance, clients should be located as close as possible to this
	// cluster. Required.
	Zone string

	// NumNodes specifies the number of nodes allocated to this cluster. More
	// nodes enable higher throughput and more consistent performance. One of
	// NumNodes or AutoscalingConfig is required. If both are set,
	// AutoscalingConfig takes precedence.
	NumNodes int32

	// StorageType specifies the type of storage used by this cluster to serve
	// its parent instance's tables, unless explicitly overridden. Required.
	StorageType StorageType

	// KMSKeyName is the name of the KMS customer managed encryption key (CMEK)
	// to use for at-rest encryption of data in this cluster.  If omitted,
	// Google's default encryption will be used. If specified, the requirements
	// for this key are:
	// 1) The Cloud Bigtable service account associated with the
	//    project that contains the cluster must be granted the
	//    ``cloudkms.cryptoKeyEncrypterDecrypter`` role on the
	//    CMEK.
	// 2) Only regional keys can be used and the region of the
	//    CMEK key must match the region of the cluster.
	// 3) All clusters within an instance must use the same CMEK
	//    key.
	// Optional. Immutable.
	KMSKeyName string

	// AutoscalingConfig configures the autoscaling properties on a cluster.
	// One of NumNodes or AutoscalingConfig is required.
	AutoscalingConfig *AutoscalingConfig
}

ClusterConfig contains the information necessary to create a cluster

ClusterInfo

type ClusterInfo struct {
	// Name is the name of the cluster.
	Name string

	// Zone is the GCP zone of the cluster (e.g. "us-central1-a").
	Zone string

	// ServeNodes is the number of allocated serve nodes.
	ServeNodes int

	// State is the state of the cluster.
	State string

	// StorageType is the storage type of the cluster.
	StorageType StorageType

	// KMSKeyName is the customer managed encryption key for the cluster.
	KMSKeyName string

	// AutoscalingConfig are the configured values for a cluster.
	AutoscalingConfig *AutoscalingConfig
}

ClusterInfo represents information about a cluster.

DeletionProtection

type DeletionProtection int

DeletionProtection indicates whether the table is protected against data loss i.e. when set to protected, deleting the table, the column families in the table, and the instance containing the table would be prohibited.

None, Protected, Unprotected

const (
	None DeletionProtection = iota
	Protected
	Unprotected
)

None indicates that deletion protection is unset Protected indicates that deletion protection is enabled Unprotected indicates that deletion protection is disabled

EncryptionInfo

type EncryptionInfo struct {
	Status        *Status
	Type          EncryptionType
	KMSKeyVersion string
}

EncryptionInfo represents the encryption info of a table.

EncryptionInfoByCluster

type EncryptionInfoByCluster map[string][]*EncryptionInfo

EncryptionInfoByCluster is a map of cluster name to EncryptionInfo

EncryptionType

type EncryptionType int32

EncryptionType is the type of encryption for an instance.

EncryptionTypeUnspecified, GoogleDefaultEncryption, CustomerManagedEncryption

const (
	// EncryptionTypeUnspecified is the type was not specified, though data at rest remains encrypted.
	EncryptionTypeUnspecified EncryptionType = iota
	// GoogleDefaultEncryption represents that data backing this resource is
	// encrypted at rest with a key that is fully managed by Google. No key
	// version or status will be populated. This is the default state.
	GoogleDefaultEncryption
	// CustomerManagedEncryption represents that data backing this resource is
	// encrypted at rest with a key that is managed by the customer.
	// The in-use version of the key and its status are populated for
	// CMEK-protected tables.
	// CMEK-protected backups are pinned to the key version that was in use at
	// the time the backup was taken. This key version is populated but its
	// status is not tracked and is reported as `UNKNOWN`.
	CustomerManagedEncryption
)

ErrPartiallyUnavailable

type ErrPartiallyUnavailable struct {
	Locations []string // unavailable locations
}

ErrPartiallyUnavailable is returned when some locations (clusters) are unavailable. Both partial results (retrieved from available locations) and the error are returned when this exception occurred.

func (ErrPartiallyUnavailable) Error

func (e ErrPartiallyUnavailable) Error() string

FamilyInfo

type FamilyInfo struct {
	Name         string
	GCPolicy     string
	FullGCPolicy GCPolicy
}

FamilyInfo represents information about a column family.

Filter

type Filter interface {
	String() string
	// contains filtered or unexported methods
}

A Filter represents a row filter.

func BlockAllFilter

func BlockAllFilter() Filter

BlockAllFilter returns a filter that matches nothing.

func CellsPerRowLimitFilter

func CellsPerRowLimitFilter(n int) Filter

CellsPerRowLimitFilter returns a filter that matches only the first N cells of each row.

func CellsPerRowOffsetFilter

func CellsPerRowOffsetFilter(n int) Filter

CellsPerRowOffsetFilter returns a filter that skips the first N cells of each row, matching all subsequent cells.

func ChainFilters

func ChainFilters(sub ...Filter) Filter

ChainFilters returns a filter that applies a sequence of filters.

func ColumnFilter

func ColumnFilter(pattern string) Filter

ColumnFilter returns a filter that matches cells whose column name matches the provided RE2 pattern. See https://github.com/google/re2/wiki/Syntax for the accepted syntax.

func ColumnRangeFilter

func ColumnRangeFilter(family, start, end string) Filter

ColumnRangeFilter returns a filter that matches a contiguous range of columns within a single family, as specified by an inclusive start qualifier and exclusive end qualifier.

func ConditionFilter

func ConditionFilter(predicateFilter, trueFilter, falseFilter Filter) Filter

ConditionFilter returns a filter that evaluates to one of two possible filters depending on whether or not the given predicate filter matches at least one cell. If the matched filter is nil then no results will be returned. IMPORTANT NOTE: The predicate filter does not execute atomically with the true and false filters, which may lead to inconsistent or unexpected results. Additionally, condition filters have poor performance, especially when filters are set for the false condition.

func FamilyFilter

func FamilyFilter(pattern string) Filter

FamilyFilter returns a filter that matches cells whose family name matches the provided RE2 pattern. See https://github.com/google/re2/wiki/Syntax for the accepted syntax.

func InterleaveFilters

func InterleaveFilters(sub ...Filter) Filter

InterleaveFilters returns a filter that applies a set of filters in parallel and interleaves the results.

func LabelFilter

func LabelFilter(label string) Filter

LabelFilter returns a filter that applies the given label to all cells in the output row.

func LatestNFilter

func LatestNFilter(n int) Filter

LatestNFilter returns a filter that matches the most recent N cells in each column.

func PassAllFilter

func PassAllFilter() Filter

PassAllFilter returns a filter that matches everything.

func RowKeyFilter

func RowKeyFilter(pattern string) Filter

RowKeyFilter returns a filter that matches cells from rows whose key matches the provided RE2 pattern. See https://github.com/google/re2/wiki/Syntax for the accepted syntax.

func RowSampleFilter

func RowSampleFilter(p float64) Filter

RowSampleFilter returns a filter that matches a row with a probability of p (must be in the interval (0, 1)).

func StripValueFilter

func StripValueFilter() Filter

StripValueFilter returns a filter that replaces each value with the empty string.

func TimestampRangeFilter

func TimestampRangeFilter(startTime time.Time, endTime time.Time) Filter

TimestampRangeFilter returns a filter that matches any cells whose timestamp is within the given time bounds. A zero time means no bound. The timestamp will be truncated to millisecond granularity.

func TimestampRangeFilterMicros

func TimestampRangeFilterMicros(startTime Timestamp, endTime Timestamp) Filter

TimestampRangeFilterMicros returns a filter that matches any cells whose timestamp is within the given time bounds, specified in units of microseconds since 1 January 1970. A zero value for the end time is interpreted as no bound. The timestamp will be truncated to millisecond granularity.

func ValueFilter

func ValueFilter(pattern string) Filter

ValueFilter returns a filter that matches cells whose value matches the provided RE2 pattern. See https://github.com/google/re2/wiki/Syntax for the accepted syntax.

func ValueRangeFilter

func ValueRangeFilter(start, end []byte) Filter

ValueRangeFilter returns a filter that matches cells with values that fall within the given range, as specified by an inclusive start value and exclusive end value.

GCPolicy

type GCPolicy interface {
	String() string
	// contains filtered or unexported methods
}

A GCPolicy represents a rule that determines which cells are eligible for garbage collection.

func IntersectionPolicy

func IntersectionPolicy(sub ...GCPolicy) GCPolicy

IntersectionPolicy returns a GC policy that only applies when all its sub-policies apply.

func MaxAgePolicy

func MaxAgePolicy(d time.Duration) GCPolicy

MaxAgePolicy returns a GC policy that applies to all cells older than the given age.

func MaxVersionsPolicy

func MaxVersionsPolicy(n int) GCPolicy

MaxVersionsPolicy returns a GC policy that applies to all versions of a cell except for the most recent n.

func NoGcPolicy

func NoGcPolicy() GCPolicy

NoGcPolicy applies to all cells setting maxage and maxversions to nil implies no gc policies

func UnionPolicy

func UnionPolicy(sub ...GCPolicy) GCPolicy

UnionPolicy returns a GC policy that applies when any of its sub-policies apply.

InstanceAdminClient

type InstanceAdminClient struct {
	// contains filtered or unexported fields
}

InstanceAdminClient is a client type for performing admin operations on instances. These operations can be substantially more dangerous than those provided by AdminClient.

func NewInstanceAdminClient

func NewInstanceAdminClient(ctx context.Context, project string, opts ...option.ClientOption) (*InstanceAdminClient, error)

NewInstanceAdminClient creates a new InstanceAdminClient for a given project.

func (*InstanceAdminClient) Close

func (iac *InstanceAdminClient) Close() error

Close closes the InstanceAdminClient.

func (*InstanceAdminClient) Clusters

func (iac *InstanceAdminClient) Clusters(ctx context.Context, instanceID string) ([]*ClusterInfo, error)

Clusters lists the clusters in an instance. If any location (cluster) is unavailable due to some transient conditions, Clusters returns partial results and ErrPartiallyUnavailable error with unavailable locations list.

func (*InstanceAdminClient) CreateAppProfile

func (iac *InstanceAdminClient) CreateAppProfile(ctx context.Context, profile ProfileConf) (*btapb.AppProfile, error)

CreateAppProfile creates an app profile within an instance.

func (*InstanceAdminClient) CreateCluster

func (iac *InstanceAdminClient) CreateCluster(ctx context.Context, conf *ClusterConfig) error

CreateCluster creates a new cluster in an instance. This method will return when the cluster has been created or when an error occurs.

func (*InstanceAdminClient) CreateInstance

func (iac *InstanceAdminClient) CreateInstance(ctx context.Context, conf *InstanceConf) error

CreateInstance creates a new instance in the project. This method will return when the instance has been created or when an error occurs.

func (*InstanceAdminClient) CreateInstanceWithClusters

func (iac *InstanceAdminClient) CreateInstanceWithClusters(ctx context.Context, conf *InstanceWithClustersConfig) error

CreateInstanceWithClusters creates a new instance with configured clusters in the project. This method will return when the instance has been created or when an error occurs.

func (*InstanceAdminClient) DeleteAppProfile

func (iac *InstanceAdminClient) DeleteAppProfile(ctx context.Context, instanceID, name string) error

DeleteAppProfile deletes an app profile from an instance.

func (*InstanceAdminClient) DeleteCluster

func (iac *InstanceAdminClient) DeleteCluster(ctx context.Context, instanceID, clusterID string) error

DeleteCluster deletes a cluster from an instance.

func (*InstanceAdminClient) DeleteInstance

func (iac *InstanceAdminClient) DeleteInstance(ctx context.Context, instanceID string) error

DeleteInstance deletes an instance from the project.

func (*InstanceAdminClient) GetAppProfile

func (iac *InstanceAdminClient) GetAppProfile(ctx context.Context, instanceID, name string) (*btapb.AppProfile, error)

GetAppProfile gets information about an app profile.

func (*InstanceAdminClient) GetCluster

func (iac *InstanceAdminClient) GetCluster(ctx context.Context, instanceID, clusterID string) (*ClusterInfo, error)

GetCluster fetches a cluster in an instance

func (*InstanceAdminClient) InstanceIAM

func (iac *InstanceAdminClient) InstanceIAM(instanceID string) *iam.Handle

InstanceIAM returns the instance's IAM handle.

func (*InstanceAdminClient) InstanceInfo

func (iac *InstanceAdminClient) InstanceInfo(ctx context.Context, instanceID string) (*InstanceInfo, error)

InstanceInfo returns information about an instance.

func (*InstanceAdminClient) Instances

func (iac *InstanceAdminClient) Instances(ctx context.Context) ([]*InstanceInfo, error)

Instances returns a list of instances in the project. If any location (cluster) is unavailable due to some transient conditions, Instances returns partial results and ErrPartiallyUnavailable error with unavailable locations list.

func (*InstanceAdminClient) ListAppProfiles

func (iac *InstanceAdminClient) ListAppProfiles(ctx context.Context, instanceID string) *ProfileIterator

ListAppProfiles lists information about app profiles in an instance.

func (*InstanceAdminClient) SetAutoscaling

func (iac *InstanceAdminClient) SetAutoscaling(ctx context.Context, instanceID, clusterID string, conf AutoscalingConfig) error

SetAutoscaling enables autoscaling on a cluster. To remove autoscaling, use UpdateCluster. See AutoscalingConfig documentation for deatils.

func (*InstanceAdminClient) UpdateAppProfile

func (iac *InstanceAdminClient) UpdateAppProfile(ctx context.Context, instanceID, profileID string, updateAttrs ProfileAttrsToUpdate) error

UpdateAppProfile updates an app profile within an instance. updateAttrs should be set. If unset, all fields will be replaced.

func (*InstanceAdminClient) UpdateCluster

func (iac *InstanceAdminClient) UpdateCluster(ctx context.Context, instanceID, clusterID string, serveNodes int32) error

UpdateCluster updates attributes of a cluster. If Autoscaling is configured for the cluster, it will be removed and replaced by the static number of serve nodes specified.

func (*InstanceAdminClient) UpdateInstanceWithClusters

func (iac *InstanceAdminClient) UpdateInstanceWithClusters(ctx context.Context, conf *InstanceWithClustersConfig) error

UpdateInstanceWithClusters updates an instance and its clusters. Updateable fields are instance display name, instance type and cluster size. The provided InstanceWithClustersConfig is used as follows:

InstanceID is required
DisplayName and InstanceType are updated only if they are not empty
ClusterID is required for any provided cluster
All other cluster fields are ignored except for NumNodes and AutoscalingConfig, which if set will be updated. If both are provided, AutoscalingConfig takes precedence.

InstanceConf

type InstanceConf struct {
	InstanceId, DisplayName, ClusterId, Zone string
	// NumNodes must not be specified for DEVELOPMENT instance types
	NumNodes     int32
	StorageType  StorageType
	InstanceType InstanceType
	Labels       map[string]string

	// AutoscalingConfig configures the autoscaling properties on the cluster
	// created with the instance. It is optional.
	AutoscalingConfig *AutoscalingConfig
}

InstanceConf contains the information necessary to create an Instance

InstanceInfo

type InstanceInfo struct {
	Name          string // name of the instance
	DisplayName   string // display name for UIs
	InstanceState InstanceState
	InstanceType  InstanceType
	Labels        map[string]string
}

InstanceInfo represents information about an instance

InstanceState

type InstanceState int32

InstanceState is the state of the instance. This is output-only.

InstanceType

type InstanceType int32

InstanceType is the type of the instance.

InstanceWithClustersConfig

type InstanceWithClustersConfig struct {
	InstanceID, DisplayName string
	Clusters                []ClusterConfig
	InstanceType            InstanceType
	Labels                  map[string]string
}

InstanceWithClustersConfig contains the information necessary to create an Instance

IntersectionGCPolicy

type IntersectionGCPolicy struct {
	// List of children policy in the intersection
	Children []GCPolicy
}

IntersectionGCPolicy with list of children

func (IntersectionGCPolicy) String

func (ip IntersectionGCPolicy) String() string

MaxAgeGCPolicy

type MaxAgeGCPolicy time.Duration

MaxAgeGCPolicy type alias

func (MaxAgeGCPolicy) GetDurationString

func (ma MaxAgeGCPolicy) GetDurationString() string

GetDurationString returns the duration string of the MaxAgeGCPolicy

func (MaxAgeGCPolicy) String

func (ma MaxAgeGCPolicy) String() string

MaxVersionsGCPolicy

type MaxVersionsGCPolicy int

MaxVersionsGCPolicy type alias

func (MaxVersionsGCPolicy) String

func (mvp MaxVersionsGCPolicy) String() string

Mutation

type Mutation struct {
	// contains filtered or unexported fields
}

Mutation represents a set of changes for a single row of a table.

func NewCondMutation

func NewCondMutation(cond Filter, mtrue, mfalse *Mutation) *Mutation

NewCondMutation returns a conditional mutation. The given row filter determines which mutation is applied: If the filter matches any cell in the row, mtrue is applied; otherwise, mfalse is applied. Either given mutation may be nil.

The application of a ReadModifyWrite is atomic; concurrent ReadModifyWrites will be executed serially by the server.

func NewMutation

func NewMutation() *Mutation

NewMutation returns a new mutation.

func (*Mutation) DeleteCellsInColumn

func (m *Mutation) DeleteCellsInColumn(family, column string)

DeleteCellsInColumn will delete all the cells whose columns are family:column.

func (*Mutation) DeleteCellsInFamily

func (m *Mutation) DeleteCellsInFamily(family string)

DeleteCellsInFamily will delete all the cells whose columns are family:*.

func (*Mutation) DeleteRow

func (m *Mutation) DeleteRow()

DeleteRow deletes the entire row.

func (*Mutation) DeleteTimestampRange

func (m *Mutation) DeleteTimestampRange(family, column string, start, end Timestamp)

DeleteTimestampRange deletes all cells whose columns are family:column and whose timestamps are in the half-open interval [start, end). If end is zero, it will be interpreted as infinity. The timestamps will be truncated to millisecond granularity.

func (*Mutation) Set

func (m *Mutation) Set(family, column string, ts Timestamp, value []byte)

Set sets a value in a specified column, with the given timestamp. The timestamp will be truncated to millisecond granularity. A timestamp of ServerTime means to use the server timestamp.

PolicyType

type PolicyType int

PolicyType represents the type of GCPolicy

PolicyUnspecified, PolicyMaxAge, PolicyMaxVersion, PolicyUnion, PolicyIntersection

const (
	// PolicyUnspecified represents type of NoGCPolicy
	PolicyUnspecified PolicyType = iota
	// PolicyMaxAge represents type of MaxAgeGCPolicy
	PolicyMaxAge
	// PolicyMaxVersion represents type of MaxVersionGCPolicy
	PolicyMaxVersion
	// PolicyUnion represents type of UnionGCPolicy
	PolicyUnion
	// PolicyIntersection represents type of IntersectionGCPolicy
	PolicyIntersection
)

func GetPolicyType

func GetPolicyType(gc GCPolicy) PolicyType

GetPolicyType takes a gc policy and return appropriate PolicyType

ProfileAttrsToUpdate

type ProfileAttrsToUpdate struct {
	// If set, updates the description.
	Description optional.String

	//If set, updates the routing policy.
	RoutingPolicy optional.String

	//If RoutingPolicy is updated to SingleClusterRouting, set these fields as well.
	ClusterID                string
	AllowTransactionalWrites bool

	// If true, warnings are ignored
	IgnoreWarnings bool
}

ProfileAttrsToUpdate define addrs to update during an Update call. If unset, no fields will be replaced.

func (*ProfileAttrsToUpdate) GetFieldMaskPath

func (p *ProfileAttrsToUpdate) GetFieldMaskPath() []string

GetFieldMaskPath returns the field mask path.

ProfileConf

type ProfileConf struct {
	Name                     string
	ProfileID                string
	InstanceID               string
	Etag                     string
	Description              string
	RoutingPolicy            string
	ClusterID                string
	AllowTransactionalWrites bool

	// If true, warnings are ignored
	IgnoreWarnings bool
}

ProfileConf contains the information necessary to create an profile

ProfileIterator

type ProfileIterator struct {
	// contains filtered or unexported fields
}

ProfileIterator iterates over profiles.

func (*ProfileIterator) Next

func (it *ProfileIterator) Next() (*btapb.AppProfile, error)

func (*ProfileIterator) PageInfo

func (it *ProfileIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See https://godoc.org/google.golang.org/api/iterator package for details.

ReadItem

type ReadItem struct {
	Row, Column string
	Timestamp   Timestamp
	Value       []byte
	Labels      []string
}

A ReadItem is returned by Read. A ReadItem contains data from a specific row and column.

ReadModifyWrite

type ReadModifyWrite struct {
	// contains filtered or unexported fields
}

ReadModifyWrite represents a set of operations on a single row of a table. It is like Mutation but for non-idempotent changes. When applied, these operations operate on the latest values of the row's cells, and result in a new value being written to the relevant cell with a timestamp that is max(existing timestamp, current server time).

The application of a ReadModifyWrite is atomic; concurrent ReadModifyWrites will be executed serially by the server.

func NewReadModifyWrite

func NewReadModifyWrite() *ReadModifyWrite

NewReadModifyWrite returns a new ReadModifyWrite.

func (*ReadModifyWrite) AppendValue

func (m *ReadModifyWrite) AppendValue(family, column string, v []byte)

AppendValue appends a value to a specific cell's value. If the cell is unset, it will be treated as an empty value.

func (*ReadModifyWrite) Increment

func (m *ReadModifyWrite) Increment(family, column string, delta int64)

Increment interprets the value in a specific cell as a 64-bit big-endian signed integer, and adds a value to it. If the cell is unset, it will be treated as zero. If the cell is set and is not an 8-byte value, the entire ApplyReadModifyWrite operation will fail.

ReadOption

type ReadOption interface {
	// contains filtered or unexported methods
}

A ReadOption is an optional argument to ReadRows.

func LimitRows

func LimitRows(limit int64) ReadOption

LimitRows returns a ReadOption that will limit the number of rows to be read.

func RowFilter

func RowFilter(f Filter) ReadOption

RowFilter returns a ReadOption that applies f to the contents of read rows.

If multiple RowFilters are provided, only the last is used. To combine filters, use ChainFilters or InterleaveFilters instead.

Row

type Row map[string][]ReadItem

A Row is returned by ReadRows. The map is keyed by column family (the prefix of the column name before the colon). The values are the returned ReadItems for that column family in the order returned by Read.

func (Row) Key

func (r Row) Key() string

Key returns the row's key, or "" if the row is empty.

RowList

type RowList []string

RowList is a sequence of row keys.

RowRange

type RowRange struct {
	// contains filtered or unexported fields
}

A RowRange is a half-open interval [Start, Limit) encompassing all the rows with keys at least as large as Start, and less than Limit. (Bigtable string comparison is the same as Go's.) A RowRange can be unbounded, encompassing all keys at least as large as Start.

func InfiniteRange

func InfiniteRange(start string) RowRange

InfiniteRange returns the RowRange consisting of all keys at least as large as start.

func NewRange

func NewRange(begin, end string) RowRange

NewRange returns the new RowRange [begin, end).

func PrefixRange

func PrefixRange(prefix string) RowRange

PrefixRange returns a RowRange consisting of all keys starting with the prefix.

func (RowRange) Contains

func (r RowRange) Contains(row string) bool

Contains says whether the RowRange contains the key.

func (RowRange) String

func (r RowRange) String() string

String provides a printable description of a RowRange.

func (RowRange) Unbounded

func (r RowRange) Unbounded() bool

Unbounded tests whether a RowRange is unbounded.

RowRangeList

type RowRangeList []RowRange

RowRangeList is a sequence of RowRanges representing the union of the ranges.

RowSet

type RowSet interface {
	// contains filtered or unexported methods
}

RowSet is a set of rows to be read. It is satisfied by RowList, RowRange and RowRangeList. The serialized size of the RowSet must be no larger than 1MiB.

func SingleRow

func SingleRow(row string) RowSet

SingleRow returns a RowSet for reading a single row.

SnapshotInfo

type SnapshotInfo struct {
	Name        string
	SourceTable string
	DataSize    int64
	CreateTime  time.Time
	DeleteTime  time.Time
}

SnapshotInfo contains snapshot metadata.

SnapshotIterator

type SnapshotIterator struct {
	// contains filtered or unexported fields
}

SnapshotIterator is an EntryIterator that iterates over log entries.

func (*SnapshotIterator) Next

func (it *SnapshotIterator) Next() (*SnapshotInfo, error)

func (*SnapshotIterator) PageInfo

func (it *SnapshotIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See https://godoc.org/google.golang.org/api/iterator package for details.

Status

type Status = status.Status

Status references google.golang.org/grpc/status. It represents an RPC status code, message, and details of EncryptionInfo. https://pkg.go.dev/google.golang.org/grpc/internal/status

StorageType

type StorageType int

StorageType is the type of storage used for all tables in an instance

SSD, HDD

const (
	SSD StorageType = iota
	HDD
)

Table

type Table struct {
	// contains filtered or unexported fields
}

A Table refers to a table.

A Table is safe to use concurrently.

func (*Table) Apply

func (t *Table) Apply(ctx context.Context, row string, m *Mutation, opts ...ApplyOption) (err error)

Apply mutates a row atomically. A mutation must contain at least one operation and at most 100000 operations.

func (*Table) ApplyBulk

func (t *Table) ApplyBulk(ctx context.Context, rowKeys []string, muts []*Mutation, opts ...ApplyOption) (errs []error, err error)

ApplyBulk applies multiple Mutations, up to a maximum of 100,000. Each mutation is individually applied atomically, but the set of mutations may be applied in any order.

Two types of failures may occur. If the entire process fails, (nil, err) will be returned. If specific mutations fail to apply, ([]err, nil) will be returned, and the errors will correspond to the relevant rowKeys/muts arguments.

Conditional mutations cannot be applied in bulk and providing one will result in an error.

func (*Table) ApplyReadModifyWrite

func (t *Table) ApplyReadModifyWrite(ctx context.Context, row string, m *ReadModifyWrite) (Row, error)

ApplyReadModifyWrite applies a ReadModifyWrite to a specific row. It returns the newly written cells.

func (*Table) ReadRow

func (t *Table) ReadRow(ctx context.Context, row string, opts ...ReadOption) (Row, error)

ReadRow is a convenience implementation of a single-row reader. A missing row will return nil for both Row and error.

func (*Table) ReadRows

func (t *Table) ReadRows(ctx context.Context, arg RowSet, f func(Row) bool, opts ...ReadOption) (err error)

ReadRows reads rows from a table. f is called for each row. If f returns false, the stream is shut down and ReadRows returns. f owns its argument, and f is called serially in order by row key.

By default, the yielded rows will contain all values in all cells. Use RowFilter to limit the cells returned.

func (*Table) SampleRowKeys

func (t *Table) SampleRowKeys(ctx context.Context) ([]string, error)

SampleRowKeys returns a sample of row keys in the table. The returned row keys will delimit contiguous sections of the table of approximately equal size, which can be used to break up the data for distributed tasks like mapreduces.

TableConf

type TableConf struct {
	TableID   string
	SplitKeys []string
	// Families is a map from family name to GCPolicy
	Families map[string]GCPolicy
	// DeletionProtection can be none, protected or unprotected
	// set to protected to make the table protected against data loss
	DeletionProtection DeletionProtection
}

TableConf contains all of the information necessary to create a table with column families.

TableInfo

type TableInfo struct {
	// DEPRECATED - This field is deprecated. Please use FamilyInfos instead.
	Families    []string
	FamilyInfos []FamilyInfo
	// DeletionProtection indicates whether the table is protected against data loss
	// DeletionProtection could be None depending on the table view
	// for example when using NAME_ONLY, the response does not contain DeletionProtection and the value should be None
	DeletionProtection DeletionProtection
}

TableInfo represents information about a table.

Timestamp

type Timestamp int64

Timestamp is in units of microseconds since 1 January 1970.

ServerTime

const ServerTime Timestamp = -1

ServerTime is a specific Timestamp that may be passed to (*Mutation).Set. It indicates that the server's timestamp should be used.

func Now

func Now() Timestamp

Now returns the Timestamp representation of the current time on the client.

func (Timestamp) Time

func (ts Timestamp) Time() time.Time

Time converts a Timestamp into a time.Time.

func (Timestamp) Time

func (ts Timestamp) Time() time.Time

Time converts a Timestamp into a time.Time.

func (Timestamp) TruncateToMilliseconds

func (ts Timestamp) TruncateToMilliseconds() Timestamp

TruncateToMilliseconds truncates a Timestamp to millisecond granularity, which is currently the only granularity supported.

UnionGCPolicy

type UnionGCPolicy struct {
	// List of children policy in the union
	Children []GCPolicy
}

UnionGCPolicy with list of children

func (UnionGCPolicy) String

func (up UnionGCPolicy) String() string

UpdateInstanceResults

type UpdateInstanceResults struct {
	InstanceUpdated bool
	CreatedClusters []string
	DeletedClusters []string
	UpdatedClusters []string
}

UpdateInstanceResults contains information about the changes made after invoking UpdateInstanceAndSyncClusters.

func UpdateInstanceAndSyncClusters

func UpdateInstanceAndSyncClusters(ctx context.Context, iac *InstanceAdminClient, conf *InstanceWithClustersConfig) (*UpdateInstanceResults, error)

UpdateInstanceAndSyncClusters updates an instance and its clusters, and will synchronize the clusters in the instance with the provided clusters, creating and deleting them as necessary. The provided InstanceWithClustersConfig is used as follows:

InstanceID is required
DisplayName and InstanceType are updated only if they are not empty
ClusterID is required for any provided cluster
Any cluster present in conf.Clusters but not part of the instance will be created using CreateCluster and the given ClusterConfig.
Any cluster missing from conf.Clusters but present in the instance will be removed from the instance using DeleteCluster.
Any cluster in conf.Clusters that also exists in the instance will be updated either to contain the provided number of nodes or to use the provided autoscaling config. If both the number of nodes and autoscaling are configured, autoscaling takes precedence. If the number of nodes is zero and autoscaling is not provided in InstanceWithClustersConfig, the cluster is not updated.

This method may return an error after partially succeeding, for example if the instance is updated but a cluster update fails. If an error is returned, InstanceInfo and Clusters may be called to determine the current state. The return UpdateInstanceResults will describe the work done by the method, whether partial or complete.

func (*UpdateInstanceResults) String

func (r *UpdateInstanceResults) String() string

UpdateTableConf

type UpdateTableConf struct {
	// contains filtered or unexported fields
}

UpdateTableConf contains all of the information necessary to update a table with column families.