Class: Google::Cloud::Bigtable::Instance

Inherits:
Object
  • Object
show all
Defined in:
lib/google/cloud/bigtable/instance.rb,
lib/google/cloud/bigtable/instance/job.rb,
lib/google/cloud/bigtable/instance/list.rb,
lib/google/cloud/bigtable/instance/cluster_map.rb

Overview

Instance

Represents a Bigtable instance. Instances are dedicated Bigtable storage resources that contain Bigtable tables.

See Project#instances, Project#instance, and Project#create_instance.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

job = bigtable.create_instance(
  "my-instance",
  display_name: "Instance for user data",
  type: :DEVELOPMENT,
  labels: { "env" => "dev" }
) do |clusters|
  clusters.add "test-cluster", "us-east1-b" # nodes not allowed
end

job.done? #=> false

# To block until the operation completes.
job.wait_until_done!
job.done? #=> true

if job.error?
  status = job.error
else
  instance = job.instance
end

Defined Under Namespace

Classes: ClusterMap, Job, List

Instance Method Summary collapse

Instance Method Details

#app_profile(app_profile_id) ⇒ Google::Cloud::Bigtable::AppProfile?

Gets an app profile in the instance.

See AppProfile#delete and AppProfile#save.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

app_profile = instance.app_profile "my-app-profile"

if app_profile
  puts app_profile.name
end

Parameters:

  • app_profile_id (String)

    The unique name of the requested app profile.

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 757

def app_profile app_profile_id
  ensure_service!
  grpc = service.get_app_profile instance_id, app_profile_id
  AppProfile.from_grpc grpc, service
rescue Google::Cloud::NotFoundError
  nil
end

#app_profilesArray<Google::Cloud::Bigtable::AppProfile>

Lists all app profiles in the instance.

See AppProfile#delete and AppProfile#save.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

instance.app_profiles.all do |app_profile|
  puts app_profile.name
end

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 785

def app_profiles
  ensure_service!
  grpc = service.list_app_profiles instance_id
  AppProfile::List.from_grpc grpc, service
end

#cluster(cluster_id) ⇒ Google::Cloud::Bigtable::Cluster?

Gets a cluster in the instance.

See Cluster#delete and Cluster#save.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

cluster = instance.cluster "my-cluster"
puts cluster.cluster_id

Parameters:

  • cluster_id (String)

    The unique ID of the requested cluster.

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 374

def cluster cluster_id
  ensure_service!
  grpc = service.get_cluster instance_id, cluster_id
  Cluster.from_grpc grpc, service
rescue Google::Cloud::NotFoundError
  nil
end

#clusters(token: nil) ⇒ Array<Google::Cloud::Bigtable::Cluster>

Lists the clusters in the instance.

See Cluster#delete and Cluster#save.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

instance.clusters.all do |cluster|
  puts cluster.cluster_id
end

Parameters:

  • token (String) (defaults to: nil)

    The token value returned by the last call to clusters; indicates that this is a continuation of a call and that the system should return the next page of data.

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 349

def clusters token: nil
  ensure_service!
  grpc = service.list_clusters instance_id, token: token
  Cluster::List.from_grpc grpc, service, instance_id: instance_id
end

#create_app_profile(name, routing_policy, description: nil, etag: nil, ignore_warnings: false) ⇒ Google::Cloud::Bigtable::AppProfile

Creates an app profile for the instance with a routing policy. Only one routing policy can applied to the app profile. The policy can be multi-cluster routing or single cluster routing.

Examples:

Create an app profile with a single cluster routing policy.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

routing_policy = Google::Cloud::Bigtable::AppProfile.single_cluster_routing(
  "my-cluster",
  allow_transactional_writes: true
)

app_profile = instance.create_app_profile(
  "my-app-profile",
  routing_policy,
  description: "App profile for user data instance"
)
puts app_profile.name

Create an app profile with multi-cluster routing policy.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

routing_policy = Google::Cloud::Bigtable::AppProfile.multi_cluster_routing

app_profile = instance.create_app_profile(
  "my-app-profile",
  routing_policy,
  description: "App profile for user data instance"
)
puts app_profile.name

Create app profile and ignore warnings.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

routing_policy = Google::Cloud::Bigtable::AppProfile.multi_cluster_routing

app_profile = instance.create_app_profile(
  "my-app-profile",
  routing_policy,
  description: "App profile for user data instance",
  ignore_warnings: true
)
puts app_profile.name

Parameters:

  • name (String)

    Unique ID of the app profile.

  • routing_policy (Google::Cloud::Bigtable::RoutingPolicy)

    The routing policy for all read/write requests that use this app profile. A value must be explicitly set.

    Routing Policies:

    • MultiClusterRoutingUseAny - Read/write requests may be routed to any cluster in the instance and 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.
    • SingleClusterRouting - Unconditionally routes all read/write requests to a specific cluster. This option preserves read-your-writes consistency but does not improve availability. Value contains cluster_id and optional field allow_transactional_writes.
  • description (String) (defaults to: nil)

    Description of the use case for this app profile.

  • etag (String) (defaults to: nil)

    Strongly validated etag for optimistic concurrency control. Preserve the value returned from GetAppProfile when calling UpdateAppProfile to fail the request if there has been a modification in the meantime. The update_mask of the request need not include etag for this protection to apply. See Wikipedia and RFC 7232 for more details.

  • ignore_warnings (Boolean) (defaults to: false)

    If true, ignore safety checks when creating the app profile. Default value is false.

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 710

def create_app_profile name, routing_policy, description: nil, etag: nil, ignore_warnings: false
  ensure_service!
  routing_policy_grpc = routing_policy.to_grpc
  if routing_policy_grpc.is_a? Google::Cloud::Bigtable::Admin::V2::AppProfile::MultiClusterRoutingUseAny
    multi_cluster_routing = routing_policy_grpc
  else
    single_cluster_routing = routing_policy_grpc
  end

  app_profile_attrs = {
    multi_cluster_routing_use_any: multi_cluster_routing,
    single_cluster_routing:        single_cluster_routing,
    description:                   description,
    etag:                          etag
  }.delete_if { |_, v| v.nil? }

  grpc = service.create_app_profile(
    instance_id,
    name,
    Google::Cloud::Bigtable::Admin::V2::AppProfile.new(app_profile_attrs),
    ignore_warnings: ignore_warnings
  )
  AppProfile.from_grpc grpc, service
end

#create_cluster(cluster_id, location, nodes: nil, storage_type: nil) ⇒ Google::Cloud::Bigtable::Cluster::Job

Creates a cluster in the instance.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"
job = instance.create_cluster(
  "my-new-cluster",
  "us-east-1b",
  nodes: 3,
  storage_type: :SSD
)

job.done? #=> false

# To block until the operation completes.
job.wait_until_done!
job.done? #=> true

if job.error?
  status = job.error
else
  cluster = job.cluster
end

Parameters:

  • cluster_id (String)

    The ID to be used when referring to the new cluster within its instance.

  • location (String)

    The location where this cluster's nodes and storage reside. For best performance, clients should be located as close as possible to this cluster. Example: "us-east-1b"

  • nodes (Integer) (defaults to: nil)

    The number of nodes allocated to this cluster. More nodes enable higher throughput and more consistent performance.

  • storage_type (Symbol) (defaults to: nil)

    Storage type. The type of storage used by this cluster to serve its parent instance's tables. Valid types are:

    • :SSD - Flash (SSD) storage.
    • :HDD - Magnetic drive (HDD).

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 426

def create_cluster cluster_id, location, nodes: nil, storage_type: nil
  ensure_service!
  attrs = {
    serve_nodes:          nodes,
    default_storage_type: storage_type,
    location:             location
  }.delete_if { |_, v| v.nil? }

  cluster = Google::Cloud::Bigtable::Admin::V2::Cluster.new attrs
  grpc = service.create_cluster instance_id, cluster_id, cluster
  Cluster::Job.from_grpc grpc, service
end

#create_table(name, column_families: nil, granularity: nil, initial_splits: nil) {|column_families| ... } ⇒ Google::Cloud::Bigtable::Table

Creates a new table in the instance.

The table can be created with a full set of initial column families, specified in the request.

Examples:

Create a table without column families.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

table = instance.create_table "my-table"
puts table.name

Create a table with initial splits and column families.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

initial_splits = ["user-00001", "user-100000", "others"]
table = instance.create_table "my-table", initial_splits: initial_splits do |cfm|
  cfm.add "cf1", gc_rule: Google::Cloud::Bigtable::GcRule.max_versions(5)
  cfm.add "cf2", gc_rule: Google::Cloud::Bigtable::GcRule.max_age(600)

  gc_rule = Google::Cloud::Bigtable::GcRule.union(
    Google::Cloud::Bigtable::GcRule.max_age(1800),
    Google::Cloud::Bigtable::GcRule.max_versions(3)
  )
  cfm.add "cf3", gc_rule: gc_rule
end

puts table

Parameters:

  • name (String)

    The name by which the new table should be referred to within the parent instance.

  • column_families (Google::Cloud::Bigtable::ColumnFamilyMap) (defaults to: nil)

    An object containing the column families for the table, mapped by column family name.

  • granularity (Symbol) (defaults to: nil)

    The granularity at which timestamps are stored in this table. Timestamps not matching the granularity will be rejected. Valid value is :MILLIS. If unspecified, the value will be set to :MILLIS.

  • initial_splits (Array<String>) (defaults to: nil)

    The optional list of row keys that will be used to initially split the table into several tablets (tablets are similar to HBase regions). Given two split keys, s1 and s2, three tablets will be created, spanning the key ranges: [, s1), [s1, s2), [s2, ).

    Example:

    • Row keys := ["a", "apple", "custom", "customer_1", "customer_2", "other", "zz"]
    • initial_split_keys := ["apple", "customer_1", "customer_2", "other"]
    • Key assignment:
      • Tablet 1 : [, apple) => {"a"}
      • Tablet 2 : [apple, customer_1) => {"apple", "custom"}
      • Tablet 3 : [customer_1, customer_2) => {"customer_1"}
      • Tablet 4 : [customer_2, other) => {"customer_2"}
      • Tablet 5 : [other, ) => {"other", "zz"} A hash in the form of Google::Cloud::Bigtable::Admin::V2::CreateTableRequest::Split can also be provided.

Yields:

  • (column_families)

    A block for adding column families.

Yield Parameters:

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 610

def create_table name, column_families: nil, granularity: nil, initial_splits: nil, &block
  ensure_service!
  Table.create(
    service,
    instance_id,
    name,
    column_families: column_families,
    granularity:     granularity,
    initial_splits:  initial_splits,
    &block
  )
end

#creating?Boolean

The instance is currently being created and may be destroyed if the creation process encounters an error.

Returns:

  • (Boolean)


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# File 'lib/google/cloud/bigtable/instance.rb', line 152

def creating?
  state == :CREATING
end

#deleteBoolean

Permanently deletes the instance from the project.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"
instance.delete

Returns:

  • (Boolean)

    Returns true if the instance was deleted.



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# File 'lib/google/cloud/bigtable/instance.rb', line 320

def delete
  ensure_service!
  service.delete_instance instance_id
  true
end

#development?Boolean

The instance is meant for development and testing purposes only; it has no performance or uptime guarantees and is not covered by SLA. After a development instance is created, it can be upgraded by updating the instance to type :PRODUCTION. An instance created as a production instance cannot be changed to a development instance. When creating a development instance, nodes on the cluster must not be set. (See #create_cluster.)

Returns:

  • (Boolean)


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# File 'lib/google/cloud/bigtable/instance.rb', line 176

def development?
  type == :DEVELOPMENT
end

#display_nameString

The descriptive name for the instance as it appears in UIs. Must be unique per project and between 4 and 30 characters long.

Returns:

  • (String)


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# File 'lib/google/cloud/bigtable/instance.rb', line 101

def display_name
  @grpc.display_name
end

#display_name=(value) ⇒ Object

Updates the descriptive name for the instance as it appears in UIs. Can be changed at any time, but should be kept globally unique to avoid confusion.

Parameters:

  • value (String)

    The descriptive name for the instance.



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# File 'lib/google/cloud/bigtable/instance.rb', line 112

def display_name= value
  @grpc.display_name = value
end

#instance_idString

The unique identifier for the instance.

Returns:

  • (String)


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# File 'lib/google/cloud/bigtable/instance.rb', line 91

def instance_id
  @grpc.name.split("/")[3]
end

#labelsHash{String=>String}

Gets the Cloud Labels for the instance.

Cloud Labels are a flexible and lightweight mechanism for organizing cloud resources into groups that reflect a customer's organizational needs and deployment strategies. Cloud Labels can be used to filter collections of resources, to control how resource metrics are aggregated, and as arguments to policy management rules (e.g., route, firewall, load balancing, etc.).

  • Label keys must be between 1 and 63 characters long and must conform to the following regular expression: [a-z]([-a-z0-9]*[a-z0-9])?.
  • Label values must be between 0 and 63 characters long and must conform to the regular expression ([a-z]([-a-z0-9]*[a-z0-9])?)?.
  • No more than 64 labels can be associated with a given resource.

Returns:

  • (Hash{String=>String})

    The label keys and values in a hash.



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# File 'lib/google/cloud/bigtable/instance.rb', line 235

def labels
  @grpc.labels
end

#labels=(labels) ⇒ Object

Sets the Cloud Labels for the instance.

Parameters:

  • labels (Hash{String=>String})

    The Cloud Labels.



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# File 'lib/google/cloud/bigtable/instance.rb', line 244

def labels= labels
  labels ||= {}
  @grpc.labels = Google::Protobuf::Map.new(
    :string, :string,
    Hash[labels.map { |k, v| [String(k), String(v)] }]
  )
end

#pathString

The full path for the instance resource. Values are of the form projects/<project_id>/instances/<instance_id>.

Returns:

  • (String)


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# File 'lib/google/cloud/bigtable/instance.rb', line 122

def path
  @grpc.name
end

#policy {|policy| ... } ⇒ Policy

Gets the Cloud IAM access control policy for the instance.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"
policy = instance.policy

Update the policy by passing a block.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
instance = bigtable.instance "my-instance"

instance.policy do |p|
  p.add "roles/owner", "user:owner@example.com"
end # 2 API calls

Yields:

  • (policy)

    A block for updating the policy. The latest policy will be read from the Bigtable service and passed to the block. After the block completes, the modified policy will be written to the service.

Yield Parameters:

  • policy (Policy)

    the current Cloud IAM Policy for this instance.

Returns:

  • (Policy)

    The current Cloud IAM Policy for the instance.

See Also:



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# File 'lib/google/cloud/bigtable/instance.rb', line 824

def policy
  ensure_service!
  grpc = service.get_instance_policy instance_id
  policy = Policy.from_grpc grpc
  return policy unless block_given?
  yield policy
  update_policy policy
end

#production?Boolean

An instance meant for production use. Requires that nodes must be set on the cluster. (See #create_cluster.)

Returns:

  • (Boolean)


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# File 'lib/google/cloud/bigtable/instance.rb', line 186

def production?
  type == :PRODUCTION
end

#project_idString

The unique identifier for the project to which the instance belongs.

Returns:

  • (String)


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# File 'lib/google/cloud/bigtable/instance.rb', line 82

def project_id
  @grpc.name.split("/")[1]
end

#ready?Boolean

The instance has been successfully created and can serve requests to its tables.

Returns:

  • (Boolean)


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# File 'lib/google/cloud/bigtable/instance.rb', line 142

def ready?
  state == :READY
end

#reload!Google::Cloud::Bigtable::Instance

Reloads instance data.



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# File 'lib/google/cloud/bigtable/instance.rb', line 302

def reload!
  @grpc = service.get_instance instance_id
  self
end

#saveGoogle::Cloud::Bigtable::Instance::Job Also known as: update

Updates the instance.

Updatable attributes are:

  • display_name - The descriptive name for the instance.
  • type - :DEVELOPMENT type instance can be upgraded to :PRODUCTION instance. An instance created as a production instance cannot be changed to a development instance.
  • labels - Cloud Labels are a flexible and lightweight mechanism for organizing cloud resources.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"
instance.display_name = "My app dev instance"  # Set display name
instance.labels = { env: "dev", data: "users" }
job = instance.save

job.done? #=> false

# Reload job until completion.
job.wait_until_done!
job.done? #=> true

if job.error?
  puts job.error
else
  instance = job.instance
  puts instance.name
  puts instance.labels
end

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 289

def save
  ensure_service!
  update_mask = Google::Protobuf::FieldMask.new paths: ["labels", "display_name", "type"]
  grpc = service.partial_update_instance @grpc, update_mask
  Instance::Job.from_grpc grpc, service
end

#stateSymbol

The current instance state. Possible values are :CREATING, :READY, :STATE_NOT_KNOWN.

Returns:

  • (Symbol)


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# File 'lib/google/cloud/bigtable/instance.rb', line 132

def state
  @grpc.state
end

#table(table_id, view: nil, perform_lookup: nil, app_profile_id: nil) ⇒ Google::Cloud::Bigtable::Table

Gets metadata information of a table in the instance.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

table = instance.table "my-table", perform_lookup: true
puts table.name
puts table.column_families

# Name-only view
table = instance.table "my-table", view: :NAME_ONLY, perform_lookup: true
puts table.name

Mutate rows.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

table = bigtable.table "my-instance", "my-table"

entry = table.new_mutation_entry "user-1"
entry.set_cell(
  "cf1",
  "field1",
  "XYZ",
  timestamp: (Time.now.to_f * 1_000_000).round(-3) # microseconds
).delete_cells "cf2", "field02"

table.mutate_row entry

Parameters:

  • view (Symbol) (defaults to: nil)

    The view to be applied to the returned tables' fields. Defaults to SCHEMA_VIEW if unspecified. Valid view types are.

    • :NAME_ONLY - Only populates name
    • :SCHEMA_VIEW - Only populates name and fields related to the table's schema
    • :REPLICATION_VIEW - Only populates name and fields related to the table's replication state.
    • :FULL - Populates all fields
  • perform_lookup (Boolean) (defaults to: nil)

    Creates table object without verifying that the table resource exists. Calls made on this object will raise errors if the table does not exist. Default value is false. Optional. Helps to reduce admin API calls.

  • app_profile_id (String) (defaults to: nil)

    The unique identifier for the app profile. Optional. Used only in data operations. This value specifies routing for replication. If not specified, the "default" application profile will be used.

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 520

def table table_id, view: nil, perform_lookup: nil, app_profile_id: nil
  ensure_service!

  view ||= :SCHEMA_VIEW
  table = if perform_lookup
            grpc = service.get_table instance_id, table_id, view: view
            Table.from_grpc grpc, service, view: view
          else
            Table.from_path service.table_path(instance_id, table_id), service
          end

  table.app_profile_id = app_profile_id
  table
rescue Google::Cloud::NotFoundError
  nil
end

#tablesArray<Google::Cloud::Bigtable::Table>

Lists all tables in the instance.

See Table#delete and Table#save.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

# Default name-only view
instance.tables.all do |table|
  puts table.name
end

Returns:



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# File 'lib/google/cloud/bigtable/instance.rb', line 460

def tables
  ensure_service!
  grpc = service.list_tables instance_id
  Table::List.from_grpc grpc, service
end

#test_iam_permissions(*permissions) ⇒ Array<String>

Tests the specified permissions against the Cloud IAM access control policy.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

permissions = instance.test_iam_permissions(
  "bigtable.instances.get",
  "bigtable.instances.update"
)
permissions.include? "bigtable.instances.get" #=> true
permissions.include? "bigtable.instances.update" #=> false

Parameters:

  • permissions (String, Array<String>)

    permissions The set of permissions to check access for. Permissions with wildcards (such as * or bigtable.*) are not allowed. See Access Control.

    Some of the permissions that can be checked on a instance are:

    • bigtable.instances.create
    • bigtable.instances.list
    • bigtable.instances.get
    • bigtable.tables.create
    • bigtable.tables.delete
    • bigtable.tables.get
    • bigtable.tables.list

Returns:

  • (Array<String>)

    The permissions that are configured for the policy.

See Also:



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# File 'lib/google/cloud/bigtable/instance.rb', line 904

def test_iam_permissions *permissions
  ensure_service!
  grpc = service.test_instance_permissions instance_id, permissions.flatten
  grpc.permissions.to_a
end

#typeSymbol

Instance type. Possible values include :DEVELOPMENT and :PRODUCTION.

Returns:

  • (Symbol)


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# File 'lib/google/cloud/bigtable/instance.rb', line 161

def type
  @grpc.type
end

#type=(instance_type) ⇒ Object

Sets the instance type.

Valid values are :DEVELOPMENT and :PRODUCTION. After a development instance is created, it can be upgraded by updating the instance to type :PRODUCTION. An instance created as a production instance cannot be changed to a development instance.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

instance.development? # true
instance.type = :PRODUCTION
instance.development? # false
instance.production? # true

Parameters:

  • instance_type (Symbol)


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# File 'lib/google/cloud/bigtable/instance.rb', line 213

def type= instance_type
  @grpc.type = instance_type
end

#update_policy(new_policy) ⇒ Policy Also known as: policy=

Updates the Cloud IAM access control policy for the instance. The policy should be read from #policy. See Policy for an explanation of the policy etag property and how to modify policies.

You can also update the policy by passing a block to #policy, which will call this method internally after the block completes.

Examples:

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

instance = bigtable.instance "my-instance"

policy = instance.policy
policy.add "roles/owner", "user:owner@example.com"
updated_policy = instance.update_policy policy

puts updated_policy.roles

Parameters:

  • new_policy (Policy)

    a new or modified Cloud IAM Policy for this instance

Returns:

  • (Policy)

    The policy returned by the API update operation.



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# File 'lib/google/cloud/bigtable/instance.rb', line 860

def update_policy new_policy
  ensure_service!
  grpc = service.set_instance_policy instance_id, new_policy.to_grpc
  Policy.from_grpc grpc
end