meta

package
v1.2.1-rc2 Latest Latest
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 Go to latest Published: Feb 6, 2017 License: MIT Imports: 25 Imported by: 176

Documentation

Overview

Package meta provides control over meta data for InfluxDB, such as controlling databases, retention policies, users, etc.

Index

Constants

View Source 
const (
	// SaltBytes is the number of bytes used for salts.
	SaltBytes = 32

	// ShardGroupDeletedExpiration is the amount of time before a shard group info will be removed from cached
	// data after it has been marked deleted (2 weeks).
	ShardGroupDeletedExpiration = -2 * 7 * 24 * time.Hour
)
View Source 
const (
	// DefaultLeaseDuration is the default duration for leases.
	DefaultLeaseDuration = 60 * time.Second

	// DefaultLoggingEnabled determines if log messages are printed for the meta service.
	DefaultLoggingEnabled = true
)
View Source 
const (
	// DefaultRetentionPolicyReplicaN is the default value of RetentionPolicyInfo.ReplicaN.
	DefaultRetentionPolicyReplicaN = 1

	// DefaultRetentionPolicyDuration is the default value of RetentionPolicyInfo.Duration.
	DefaultRetentionPolicyDuration = time.Duration(0)

	// DefaultRetentionPolicyName is the default name for auto generated retention policies.
	DefaultRetentionPolicyName = "autogen"

	// MinRetentionPolicyDuration represents the minimum duration for a policy.
	MinRetentionPolicyDuration = time.Hour
)

Variables

View Source 
var (
	// ErrServiceUnavailable is returned when the meta service is unavailable.
	ErrServiceUnavailable = errors.New("meta service unavailable")

	// ErrService is returned when the meta service returns an error.
	ErrService = errors.New("meta service error")
)
View Source 
var (
	// ErrStoreOpen is returned when opening an already open store.
	ErrStoreOpen = errors.New("store already open")

	// ErrStoreClosed is returned when closing an already closed store.
	ErrStoreClosed = errors.New("raft store already closed")
)
View Source 
var (
	// ErrDatabaseExists is returned when creating an already existing database.
	ErrDatabaseExists = errors.New("database already exists")

	// ErrDatabaseNotExists is returned when operating on a not existing database.
	ErrDatabaseNotExists = errors.New("database does not exist")

	// ErrDatabaseNameRequired is returned when creating a database without a name.
	ErrDatabaseNameRequired = errors.New("database name required")

	// ErrInvalidName is returned when attempting to create a database or retention policy with an invalid name
	ErrInvalidName = errors.New("invalid name")
)
View Source 
var (
	// ErrRetentionPolicyExists is returned when creating an already existing policy.
	ErrRetentionPolicyExists = errors.New("retention policy already exists")

	// ErrRetentionPolicyNotFound is returned when an expected policy wasn't found.
	ErrRetentionPolicyNotFound = errors.New("retention policy not found")

	// ErrRetentionPolicyDefault is returned when attempting a prohibited operation
	// on a default retention policy.
	ErrRetentionPolicyDefault = errors.New("retention policy is default")

	// ErrRetentionPolicyRequired is returned when a retention policy is required
	// by an operation, but a nil policy was passed.
	ErrRetentionPolicyRequired = errors.New("retention policy required")

	// ErrRetentionPolicyNameRequired is returned when creating a policy without a name.
	ErrRetentionPolicyNameRequired = errors.New("retention policy name required")

	// ErrRetentionPolicyNameExists is returned when renaming a policy to
	// the same name as another existing policy.
	ErrRetentionPolicyNameExists = errors.New("retention policy name already exists")

	// ErrRetentionPolicyDurationTooLow is returned when updating a retention
	// policy that has a duration lower than the allowed minimum.
	ErrRetentionPolicyDurationTooLow = fmt.Errorf("retention policy duration must be at least %s", MinRetentionPolicyDuration)

	// ErrRetentionPolicyConflict is returned when creating a retention policy conflicts
	// with an existing policy.
	ErrRetentionPolicyConflict = errors.New("retention policy conflicts with an existing policy")

	// ErrIncompatibleDurations is returned when creating or updating a
	// retention policy that has a duration lower than the current shard
	// duration.
	ErrIncompatibleDurations = errors.New("retention policy duration must be greater than the shard duration")

	// ErrReplicationFactorTooLow is returned when the replication factor is not in an
	// acceptable range.
	ErrReplicationFactorTooLow = errors.New("replication factor must be greater than 0")
)
View Source 
var (
	// ErrShardGroupExists is returned when creating an already existing shard group.
	ErrShardGroupExists = errors.New("shard group already exists")

	// ErrShardGroupNotFound is returned when mutating a shard group that doesn't exist.
	ErrShardGroupNotFound = errors.New("shard group not found")

	// ErrShardNotReplicated is returned if the node requested to be dropped has
	// the last copy of a shard present and the force keyword was not used
	ErrShardNotReplicated = errors.New("shard not replicated")
)
View Source 
var (
	// ErrContinuousQueryExists is returned when creating an already existing continuous query.
	ErrContinuousQueryExists = errors.New("continuous query already exists")

	// ErrContinuousQueryNotFound is returned when removing a continuous query that doesn't exist.
	ErrContinuousQueryNotFound = errors.New("continuous query not found")
)
View Source 
var (
	// ErrSubscriptionExists is returned when creating an already existing subscription.
	ErrSubscriptionExists = errors.New("subscription already exists")

	// ErrSubscriptionNotFound is returned when removing a subscription that doesn't exist.
	ErrSubscriptionNotFound = errors.New("subscription not found")
)
View Source 
var (
	// ErrUserExists is returned when creating an already existing user.
	ErrUserExists = errors.New("user already exists")

	// ErrUserNotFound is returned when mutating a user that doesn't exist.
	ErrUserNotFound = errors.New("user not found")

	// ErrUsernameRequired is returned when creating a user without a username.
	ErrUsernameRequired = errors.New("username required")

	// ErrAuthenticate is returned when authentication fails.
	ErrAuthenticate = errors.New("authentication failed")
)

Functions

func ErrInvalidSubscriptionURL added in v1.2.0 

func ErrInvalidSubscriptionURL(url string) error

ErrInvalidSubscriptionURL is returned when the subscription's destination URL is invalid.

func MarshalTime 

func MarshalTime(t time.Time) int64

MarshalTime converts t to nanoseconds since epoch. A zero time returns 0.

func NewShardOwner added in v0.12.0 

func NewShardOwner(s ShardInfo, ownerFreqs map[int]int) (uint64, error)

NewShardOwner sets the owner of the provided shard to the data node that currently owns the fewest number of shards. If multiple nodes own the same (fewest) number of shards, then one of those nodes becomes the new shard owner.

func UnmarshalTime 

func UnmarshalTime(v int64) time.Time

UnmarshalTime converts nanoseconds since epoch to time. A zero value returns a zero time.

func ValidName added in v1.2.0 

func ValidName(name string) bool

ValidName checks to see if the given name can would be valid for DB/RP name

Types

type Client 

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

Client is used to execute commands on and read data from a meta service cluster.

func NewClient 

func NewClient(config *Config) *Client

NewClient returns a new *Client.

func (*Client) AcquireLease 

func (c *Client) AcquireLease(name string) (*Lease, error)

AcquireLease attempts to acquire the specified lease. TODO corylanou remove this for single node

func (*Client) AdminUserExists 

func (c *Client) AdminUserExists() bool

AdminUserExists returns true if any user has admin privilege.

func (*Client) Authenticate 

func (c *Client) Authenticate(username, password string) (*UserInfo, error)

Authenticate returns a UserInfo if the username and password match an existing entry.

func (*Client) Close 

func (c *Client) Close() error

Close the meta service cluster connection.

func (*Client) ClusterID 

func (c *Client) ClusterID() uint64

ClusterID returns the ID of the cluster it's connected to.

func (*Client) CreateContinuousQuery 

func (c *Client) CreateContinuousQuery(database, name, query string) error

CreateContinuousQuery saves a continuous query with the given name for the given database.

func (*Client) CreateDatabase 

func (c *Client) CreateDatabase(name string) (*DatabaseInfo, error)

CreateDatabase creates a database or returns it if it already exists.

func (*Client) CreateDatabaseWithRetentionPolicy 

func (c *Client) CreateDatabaseWithRetentionPolicy(name string, spec *RetentionPolicySpec) (*DatabaseInfo, error)

CreateDatabaseWithRetentionPolicy creates a database with the specified retention policy.

When creating a database with a retention policy, the retention policy will always be set to default. Therefore if the caller provides a retention policy that already exists on the database, but that retention policy is not the default one, an error will be returned.

This call is only idempotent when the caller provides the exact same retention policy, and that retention policy is already the default for the database.

func (*Client) CreateRetentionPolicy 

func (c *Client) CreateRetentionPolicy(database string, spec *RetentionPolicySpec, makeDefault bool) (*RetentionPolicyInfo, error)

CreateRetentionPolicy creates a retention policy on the specified database.

func (*Client) CreateShardGroup 

func (c *Client) CreateShardGroup(database, policy string, timestamp time.Time) (*ShardGroupInfo, error)

CreateShardGroup creates a shard group on a database and policy for a given timestamp.

func (*Client) CreateSubscription 

func (c *Client) CreateSubscription(database, rp, name, mode string, destinations []string) error

CreateSubscription creates a subscription against the given database and retention policy.

func (*Client) CreateUser 

func (c *Client) CreateUser(name, password string, admin bool) (*UserInfo, error)

CreateUser adds a user with the given name and password and admin status.

func (*Client) Data added in v0.12.1 

func (c *Client) Data() Data

Data returns a clone of the underlying data in the meta store.

func (*Client) Database 

func (c *Client) Database(name string) *DatabaseInfo

Database returns info for the requested database.

func (*Client) Databases 

func (c *Client) Databases() []DatabaseInfo

Databases returns a list of all database infos.

func (*Client) DeleteShardGroup 

func (c *Client) DeleteShardGroup(database, policy string, id uint64) error

DeleteShardGroup removes a shard group from a database and retention policy by id.

func (*Client) DropContinuousQuery 

func (c *Client) DropContinuousQuery(database, name string) error

DropContinuousQuery removes the continuous query with the given name on the given database.

func (*Client) DropDatabase 

func (c *Client) DropDatabase(name string) error

DropDatabase deletes a database.

func (*Client) DropRetentionPolicy 

func (c *Client) DropRetentionPolicy(database, name string) error

DropRetentionPolicy drops a retention policy from a database.

func (*Client) DropShard added in v0.12.0 

func (c *Client) DropShard(id uint64) error

DropShard deletes a shard by ID.

func (*Client) DropSubscription 

func (c *Client) DropSubscription(database, rp, name string) error

DropSubscription removes the named subscription from the given database and retention policy.

func (*Client) DropUser 

func (c *Client) DropUser(name string) error

DropUser removes the user with the given name.

func (*Client) Load added in v0.12.0 

func (c *Client) Load() error

Load loads the current meta data from disk.

func (*Client) MarshalBinary 

func (c *Client) MarshalBinary() ([]byte, error)

MarshalBinary returns a binary representation of the underlying data.

func (*Client) Open 

func (c *Client) Open() error

Open a connection to a meta service cluster.

func (*Client) PrecreateShardGroups 

func (c *Client) PrecreateShardGroups(from, to time.Time) error

PrecreateShardGroups creates shard groups whose endtime is before the 'to' time passed in, but is yet to expire before 'from'. This is to avoid the need for these shards to be created when data for the corresponding time range arrives. Shard creation involves Raft consensus, and precreation avoids taking the hit at write-time.

func (*Client) PruneShardGroups added in v1.2.0 

func (c *Client) PruneShardGroups() error

PruneShardGroups remove deleted shard groups from the data store.

func (*Client) RetentionPolicy 

func (c *Client) RetentionPolicy(database, name string) (rpi *RetentionPolicyInfo, err error)

RetentionPolicy returns the requested retention policy info.

func (*Client) SetAdminPrivilege 

func (c *Client) SetAdminPrivilege(username string, admin bool) error

SetAdminPrivilege sets or unsets admin privilege to the given username.

func (*Client) SetData 

func (c *Client) SetData(data *Data) error

SetData overwrites the underlying data in the meta store.

func (*Client) SetPrivilege 

func (c *Client) SetPrivilege(username, database string, p influxql.Privilege) error

SetPrivilege sets a privilege for the given user on the given database.

func (*Client) ShardGroupsByTimeRange 

func (c *Client) ShardGroupsByTimeRange(database, policy string, min, max time.Time) (a []ShardGroupInfo, err error)

ShardGroupsByTimeRange returns a list of all shard groups on a database and policy that may contain data for the specified time range. Shard groups are sorted by start time.

func (*Client) ShardIDs added in v0.11.0 

func (c *Client) ShardIDs() []uint64

ShardIDs returns a list of all shard ids.

func (*Client) ShardOwner 

func (c *Client) ShardOwner(shardID uint64) (database, policy string, sgi *ShardGroupInfo)

ShardOwner returns the owning shard group info for a specific shard.

func (*Client) ShardsByTimeRange added in v0.11.0 

func (c *Client) ShardsByTimeRange(sources influxql.Sources, tmin, tmax time.Time) (a []ShardInfo, err error)

ShardsByTimeRange returns a slice of shards that may contain data in the time range.

func (*Client) UpdateRetentionPolicy 

func (c *Client) UpdateRetentionPolicy(database, name string, rpu *RetentionPolicyUpdate, makeDefault bool) error

UpdateRetentionPolicy updates a retention policy.

func (*Client) UpdateUser 

func (c *Client) UpdateUser(name, password string) error

UpdateUser updates the password of an existing user.

func (*Client) User 

func (c *Client) User(name string) (*UserInfo, error)

User returns the user with the given name, or ErrUserNotFound.

func (*Client) UserCount 

func (c *Client) UserCount() int

UserCount returns the number of users stored.

func (*Client) UserPrivilege 

func (c *Client) UserPrivilege(username, database string) (*influxql.Privilege, error)

UserPrivilege returns the privilege for the given user on the given database.

func (*Client) UserPrivileges 

func (c *Client) UserPrivileges(username string) (map[string]influxql.Privilege, error)

UserPrivileges returns the privileges for a user mapped by database name.

func (*Client) Users 

func (c *Client) Users() []UserInfo

Users returns a slice of UserInfo representing the currently known users.

func (*Client) WaitForDataChanged 

func (c *Client) WaitForDataChanged() chan struct{}

WaitForDataChanged returns a channel that will get closed when the metastore data has changed.

func (*Client) WithLogger added in v1.2.0 

func (c *Client) WithLogger(log zap.Logger)

WithLogger sets the logger for the client.

type Config 

type Config struct {
	Dir string `toml:"dir"`

	RetentionAutoCreate bool `toml:"retention-autocreate"`
	LoggingEnabled      bool `toml:"logging-enabled"`
}

Config represents the meta configuration.

func NewConfig 

func NewConfig() *Config

NewConfig builds a new configuration with default values.

func (*Config) Validate 

func (c *Config) Validate() error

Validate returns an error if the config is invalid.

type ContinuousQueryInfo 

type ContinuousQueryInfo struct {
	Name  string
	Query string
}

ContinuousQueryInfo represents metadata about a continuous query.

type Data 

type Data struct {
	Term      uint64 // associated raft term
	Index     uint64 // associated raft index
	ClusterID uint64
	Databases []DatabaseInfo
	Users     []UserInfo

	MaxShardGroupID uint64
	MaxShardID      uint64
}

Data represents the top level collection of all metadata.

func (*Data) Clone 

func (data *Data) Clone() *Data

Clone returns a copy of data with a new version.

func (*Data) CloneDatabases 

func (data *Data) CloneDatabases() []DatabaseInfo

CloneDatabases returns a copy of the DatabaseInfo.

func (*Data) CloneUsers added in v0.12.0 

func (data *Data) CloneUsers() []UserInfo

CloneUsers returns a copy of the user infos.

func (*Data) CreateContinuousQuery 

func (data *Data) CreateContinuousQuery(database, name, query string) error

CreateContinuousQuery adds a named continuous query to a database.

func (*Data) CreateDatabase 

func (data *Data) CreateDatabase(name string) error

CreateDatabase creates a new database. It returns an error if name is blank or if a database with the same name already exists.

func (*Data) CreateRetentionPolicy 

func (data *Data) CreateRetentionPolicy(database string, rpi *RetentionPolicyInfo, makeDefault bool) error

CreateRetentionPolicy creates a new retention policy on a database. It returns an error if name is blank or if the database does not exist.

func (*Data) CreateShardGroup 

func (data *Data) CreateShardGroup(database, policy string, timestamp time.Time) error

CreateShardGroup creates a shard group on a database and policy for a given timestamp.

func (*Data) CreateSubscription 

func (data *Data) CreateSubscription(database, rp, name, mode string, destinations []string) error

CreateSubscription adds a named subscription to a database and retention policy.

func (*Data) CreateUser 

func (data *Data) CreateUser(name, hash string, admin bool) error

CreateUser creates a new user.

func (*Data) Database 

func (data *Data) Database(name string) *DatabaseInfo

Database returns a DatabaseInfo by the database name.

func (*Data) DeleteShardGroup 

func (data *Data) DeleteShardGroup(database, policy string, id uint64) error

DeleteShardGroup removes a shard group from a database and retention policy by id.

func (*Data) DropContinuousQuery 

func (data *Data) DropContinuousQuery(database, name string) error

DropContinuousQuery removes a continuous query.

func (*Data) DropDatabase 

func (data *Data) DropDatabase(name string) error

DropDatabase removes a database by name. It does not return an error if the database cannot be found.

func (*Data) DropRetentionPolicy 

func (data *Data) DropRetentionPolicy(database, name string) error

DropRetentionPolicy removes a retention policy from a database by name.

func (*Data) DropShard added in v0.12.0 

func (data *Data) DropShard(id uint64)

DropShard removes a shard by ID.

DropShard won't return an error if the shard can't be found, which allows the command to be re-run in the case that the meta store succeeds but a data node fails.

func (*Data) DropSubscription 

func (data *Data) DropSubscription(database, rp, name string) error

DropSubscription removes a subscription.

func (*Data) DropUser 

func (data *Data) DropUser(name string) error

DropUser removes an existing user by name.

func (*Data) MarshalBinary 

func (data *Data) MarshalBinary() ([]byte, error)

MarshalBinary encodes the metadata to a binary format.

func (*Data) RetentionPolicy 

func (data *Data) RetentionPolicy(database, name string) (*RetentionPolicyInfo, error)

RetentionPolicy returns a retention policy for a database by name.

func (*Data) SetAdminPrivilege 

func (data *Data) SetAdminPrivilege(name string, admin bool) error

SetAdminPrivilege sets the admin privilege for a user.

func (*Data) SetPrivilege 

func (data *Data) SetPrivilege(name, database string, p influxql.Privilege) error

SetPrivilege sets a privilege for a user on a database.

func (*Data) ShardGroupByTimestamp 

func (data *Data) ShardGroupByTimestamp(database, policy string, timestamp time.Time) (*ShardGroupInfo, error)

ShardGroupByTimestamp returns the shard group on a database and policy for a given timestamp.

func (*Data) ShardGroups 

func (data *Data) ShardGroups(database, policy string) ([]ShardGroupInfo, error)

ShardGroups returns a list of all shard groups on a database and retention policy.

func (*Data) ShardGroupsByTimeRange 

func (data *Data) ShardGroupsByTimeRange(database, policy string, tmin, tmax time.Time) ([]ShardGroupInfo, error)

ShardGroupsByTimeRange returns a list of all shard groups on a database and policy that may contain data for the specified time range. Shard groups are sorted by start time.

func (*Data) UnmarshalBinary 

func (data *Data) UnmarshalBinary(buf []byte) error

UnmarshalBinary decodes the object from a binary format.

func (*Data) UpdateRetentionPolicy 

func (data *Data) UpdateRetentionPolicy(database, name string, rpu *RetentionPolicyUpdate, makeDefault bool) error

UpdateRetentionPolicy updates an existing retention policy.

func (*Data) UpdateUser 

func (data *Data) UpdateUser(name, hash string) error

UpdateUser updates the password hash of an existing user.

func (*Data) User 

func (data *Data) User(username string) *UserInfo

User returns a user by username.

func (*Data) UserPrivilege 

func (data *Data) UserPrivilege(name, database string) (*influxql.Privilege, error)

UserPrivilege gets the privilege for a user on a database.

func (*Data) UserPrivileges 

func (data *Data) UserPrivileges(name string) (map[string]influxql.Privilege, error)

UserPrivileges gets the privileges for a user.

type DatabaseInfo 

type DatabaseInfo struct {
	Name                   string
	DefaultRetentionPolicy string
	RetentionPolicies      []RetentionPolicyInfo
	ContinuousQueries      []ContinuousQueryInfo
}

DatabaseInfo represents information about a database in the system.

func (DatabaseInfo) RetentionPolicy 

func (di DatabaseInfo) RetentionPolicy(name string) *RetentionPolicyInfo

RetentionPolicy returns a retention policy by name.

func (DatabaseInfo) ShardInfos 

func (di DatabaseInfo) ShardInfos() []ShardInfo

ShardInfos returns a list of all shards' info for the database.

type ErrAuthorize added in v0.11.0 

type ErrAuthorize struct {
	Query    *influxql.Query
	User     string
	Database string
	Message  string
}

ErrAuthorize represents an authorization error.

func (ErrAuthorize) Error added in v0.11.0 

func (e ErrAuthorize) Error() string

Error returns the text of the error.

type Lease 

type Lease struct {
	Name       string    `json:"name"`
	Expiration time.Time `json:"expiration"`
	Owner      uint64    `json:"owner"`
}

Lease represents a lease held on a resource.

type Leases 

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

Leases is a concurrency-safe collection of leases keyed by name.

func NewLeases 

func NewLeases(d time.Duration) *Leases

NewLeases returns a new instance of Leases.

func (*Leases) Acquire 

func (leases *Leases) Acquire(name string, nodeID uint64) (*Lease, error)

Acquire acquires a lease with the given name for the given nodeID. If the lease doesn't exist or exists but is expired, a valid lease is returned. If nodeID already owns the named and unexpired lease, the lease expiration is extended. If a different node owns the lease, an error is returned.

type NodeInfo 

type NodeInfo struct {
	ID      uint64
	Host    string
	TCPHost string
}

NodeInfo represents information about a single node in the cluster.

type NodeInfos 

type NodeInfos []NodeInfo

NodeInfos is a slice of NodeInfo used for sorting

func (NodeInfos) Len 

func (n NodeInfos) Len() int

Len implements sort.Interface.

func (NodeInfos) Less 

func (n NodeInfos) Less(i, j int) bool

Less implements sort.Interface.

func (NodeInfos) Swap 

func (n NodeInfos) Swap(i, j int)

Swap implements sort.Interface.

type QueryAuthorizer added in v0.11.0 

type QueryAuthorizer struct {
	Client *Client
}

QueryAuthorizer determines whether a user is authorized to execute a given query.

func NewQueryAuthorizer added in v0.11.0 

func NewQueryAuthorizer(c *Client) *QueryAuthorizer

NewQueryAuthorizer returns a new instance of QueryAuthorizer.

func (*QueryAuthorizer) AuthorizeQuery added in v0.11.0 

func (a *QueryAuthorizer) AuthorizeQuery(u *UserInfo, query *influxql.Query, database string) error

AuthorizeQuery authorizes u to execute q on database. Database can be "" for queries that do not require a database. If no user is provided it will return an error unless the query's first statement is to create a root user.

type RetentionPolicyInfo 

type RetentionPolicyInfo struct {
	Name               string
	ReplicaN           int
	Duration           time.Duration
	ShardGroupDuration time.Duration
	ShardGroups        []ShardGroupInfo
	Subscriptions      []SubscriptionInfo
}

RetentionPolicyInfo represents metadata about a retention policy.

func DefaultRetentionPolicyInfo added in v1.0.0 

func DefaultRetentionPolicyInfo() *RetentionPolicyInfo

DefaultRetentionPolicyInfo returns a new instance of RetentionPolicyInfo with default name, replication, and duration.

func NewRetentionPolicyInfo 

func NewRetentionPolicyInfo(name string) *RetentionPolicyInfo

NewRetentionPolicyInfo returns a new instance of RetentionPolicyInfo with default replication and duration.

func (*RetentionPolicyInfo) Apply added in v1.0.0 

func (rpi *RetentionPolicyInfo) Apply(spec *RetentionPolicySpec) *RetentionPolicyInfo

Apply applies a specification to the retention policy info.

func (*RetentionPolicyInfo) DeletedShardGroups 

func (rpi *RetentionPolicyInfo) DeletedShardGroups() []*ShardGroupInfo

DeletedShardGroups returns the Shard Groups which are marked as deleted.

func (*RetentionPolicyInfo) ExpiredShardGroups 

func (rpi *RetentionPolicyInfo) ExpiredShardGroups(t time.Time) []*ShardGroupInfo

ExpiredShardGroups returns the Shard Groups which are considered expired, for the given time.

func (*RetentionPolicyInfo) MarshalBinary added in v0.12.0 

func (rpi *RetentionPolicyInfo) MarshalBinary() ([]byte, error)

MarshalBinary encodes rpi to a binary format.

func (*RetentionPolicyInfo) ShardGroupByTimestamp 

func (rpi *RetentionPolicyInfo) ShardGroupByTimestamp(timestamp time.Time) *ShardGroupInfo

ShardGroupByTimestamp returns the shard group in the policy that contains the timestamp, or nil if no shard group matches.

func (*RetentionPolicyInfo) UnmarshalBinary added in v0.12.0 

func (rpi *RetentionPolicyInfo) UnmarshalBinary(data []byte) error

UnmarshalBinary decodes rpi from a binary format.

type RetentionPolicySpec added in v1.0.0 

type RetentionPolicySpec struct {
	Name               string
	ReplicaN           *int
	Duration           *time.Duration
	ShardGroupDuration time.Duration
}

RetentionPolicySpec represents the specification for a new retention policy.

func (*RetentionPolicySpec) MarshalBinary added in v1.0.0 

func (s *RetentionPolicySpec) MarshalBinary() ([]byte, error)

MarshalBinary encodes RetentionPolicySpec to a binary format.

func (*RetentionPolicySpec) Matches added in v1.0.0 

func (s *RetentionPolicySpec) Matches(rpi *RetentionPolicyInfo) bool

Matches checks if this retention policy specification matches an existing retention policy.

func (*RetentionPolicySpec) NewRetentionPolicyInfo added in v1.0.0 

func (s *RetentionPolicySpec) NewRetentionPolicyInfo() *RetentionPolicyInfo

NewRetentionPolicyInfo creates a new retention policy info from the specification.

func (*RetentionPolicySpec) UnmarshalBinary added in v1.0.0 

func (s *RetentionPolicySpec) UnmarshalBinary(data []byte) error

UnmarshalBinary decodes RetentionPolicySpec from a binary format.

type RetentionPolicyUpdate 

type RetentionPolicyUpdate struct {
	Name               *string
	Duration           *time.Duration
	ReplicaN           *int
	ShardGroupDuration *time.Duration
}

RetentionPolicyUpdate represents retention policy fields to be updated.

func (*RetentionPolicyUpdate) SetDuration 

func (rpu *RetentionPolicyUpdate) SetDuration(v time.Duration)

SetDuration sets the RetentionPolicyUpdate.Duration.

func (*RetentionPolicyUpdate) SetName 

func (rpu *RetentionPolicyUpdate) SetName(v string)

SetName sets the RetentionPolicyUpdate.Name.

func (*RetentionPolicyUpdate) SetReplicaN 

func (rpu *RetentionPolicyUpdate) SetReplicaN(v int)

SetReplicaN sets the RetentionPolicyUpdate.ReplicaN.

func (*RetentionPolicyUpdate) SetShardGroupDuration added in v0.12.0 

func (rpu *RetentionPolicyUpdate) SetShardGroupDuration(v time.Duration)

SetShardGroupDuration sets the RetentionPolicyUpdate.ShardGroupDuration.

type ShardGroupInfo 

type ShardGroupInfo struct {
	ID          uint64
	StartTime   time.Time
	EndTime     time.Time
	DeletedAt   time.Time
	Shards      []ShardInfo
	TruncatedAt time.Time
}

ShardGroupInfo represents metadata about a shard group. The DeletedAt field is important because it makes it clear that a ShardGroup has been marked as deleted, and allow the system to be sure that a ShardGroup is not simply missing. If the DeletedAt is set, the system can safely delete any associated shards.

func (*ShardGroupInfo) Contains 

func (sgi *ShardGroupInfo) Contains(timestamp time.Time) bool

Contains returns true if the shard group contains data for the timestamp.

func (*ShardGroupInfo) Deleted 

func (sgi *ShardGroupInfo) Deleted() bool

Deleted returns whether this ShardGroup has been deleted.

func (*ShardGroupInfo) Overlaps 

func (sgi *ShardGroupInfo) Overlaps(min, max time.Time) bool

Overlaps returns whether the shard group contains data for the time range between min and max

func (*ShardGroupInfo) ShardFor 

func (sgi *ShardGroupInfo) ShardFor(hash uint64) ShardInfo

ShardFor returns the ShardInfo for a Point hash.

func (*ShardGroupInfo) Truncated added in v1.0.0 

func (sgi *ShardGroupInfo) Truncated() bool

Truncated returns true if this ShardGroup has been truncated (no new writes).

type ShardGroupInfos 

type ShardGroupInfos []ShardGroupInfo

ShardGroupInfos implements sort.Interface on []ShardGroupInfo, based on the StartTime field.

func (ShardGroupInfos) Len 

func (a ShardGroupInfos) Len() int

Len implements sort.Interface.

func (ShardGroupInfos) Less 

func (a ShardGroupInfos) Less(i, j int) bool

Less implements sort.Interface.

func (ShardGroupInfos) Swap 

func (a ShardGroupInfos) Swap(i, j int)

Swap implements sort.Interface.

type ShardInfo 

type ShardInfo struct {
	ID     uint64
	Owners []ShardOwner
}

ShardInfo represents metadata about a shard.

func (ShardInfo) OwnedBy 

func (si ShardInfo) OwnedBy(nodeID uint64) bool

OwnedBy determines whether the shard's owner IDs includes nodeID.

func (*ShardInfo) UnmarshalBinary 

func (si *ShardInfo) UnmarshalBinary(buf []byte) error

UnmarshalBinary decodes the object from a binary format.

type ShardOwner 

type ShardOwner struct {
	NodeID uint64
}

ShardOwner represents a node that owns a shard.

type SubscriptionInfo 

type SubscriptionInfo struct {
	Name         string
	Mode         string
	Destinations []string
}

SubscriptionInfo holds the subscription information.

type UserInfo 

type UserInfo struct {
	Name       string
	Hash       string
	Admin      bool
	Privileges map[string]influxql.Privilege
}

UserInfo represents metadata about a user in the system.

func (*UserInfo) Authorize 

func (ui *UserInfo) Authorize(privilege influxql.Privilege, database string) bool

Authorize returns true if the user is authorized and false if not.

type WriteAuthorizer added in v0.13.0 

type WriteAuthorizer struct {
	Client *Client
}

WriteAuthorizer determines whether a user is authorized to write to a given database.

func NewWriteAuthorizer added in v0.13.0 

func NewWriteAuthorizer(c *Client) *WriteAuthorizer

NewWriteAuthorizer returns a new instance of WriteAuthorizer.

func (WriteAuthorizer) AuthorizeWrite added in v0.13.0 

func (a WriteAuthorizer) AuthorizeWrite(username, database string) error

AuthorizeWrite returns nil if the user has permission to write to the database.

Source Files

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Directories

Path Synopsis
Package meta is a generated protocol buffer package.
 Package meta is a generated protocol buffer package.

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