Class: DynamoDbFramework::TableManager
- Inherits:
-
Object
- Object
- DynamoDbFramework::TableManager
- Defined in:
- lib/dynamodb_framework/dynamodb_table_manager.rb
Instance Attribute Summary collapse
-
#dynamodb ⇒ Object
readonly
Returns the value of attribute dynamodb.
Instance Method Summary collapse
- #add_index(table_name, attributes, global_index) ⇒ Object
- #create(table_name, attributes, partition_key, range_key = nil, read_capacity = 20, write_capacity = 10, global_indexes = nil) ⇒ Object
- #create_global_index(name, partition_key, range_key = nil, read_capacity = 20, write_capacity = 10) ⇒ Object
- #create_table(options = {}) ⇒ Object
- #drop(table_name) ⇒ Object
- #drop_index(table_name, index_name) ⇒ Object
- #drop_table(table_name) ⇒ Object
- #exists?(table_name) ⇒ Boolean
- #get_index_status(table_name, index_name) ⇒ Object
- #get_status(table_name) ⇒ Object
- #has_index?(table_name, index_name) ⇒ Boolean
-
#initialize(store) ⇒ TableManager
constructor
A new instance of TableManager.
- #update_index_throughput(table_name, index_name, read_capacity, write_capacity) ⇒ Object
- #update_throughput(table_name, read_capacity, write_capacity) ⇒ Object
- #wait_until_active(table_name) ⇒ Object
- #wait_until_index_active(table_name, index_name) ⇒ Object
- #wait_until_index_dropped(table_name, index_name) ⇒ Object
Constructor Details
#initialize(store) ⇒ TableManager
Returns a new instance of TableManager.
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 6 def initialize(store) @dynamodb = store end |
Instance Attribute Details
#dynamodb ⇒ Object (readonly)
Returns the value of attribute dynamodb.
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 4 def dynamodb @dynamodb end |
Instance Method Details
#add_index(table_name, attributes, global_index) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 69 def add_index(table_name, attributes, global_index) attribute_definitions = [] attributes.each do |a| attribute_definitions.push({ :attribute_name => a[:name], :attribute_type => a[:type] }) end table = { :table_name => table_name, :attribute_definitions => attribute_definitions, :global_secondary_index_updates => [ :create => global_index ] } dynamodb.client.update_table(table) # wait for table to be updated DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Adding global index: #{global_index[:index_name]}." wait_until_index_active(table_name, global_index[:index_name]) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Index added." end |
#create(table_name, attributes, partition_key, range_key = nil, read_capacity = 20, write_capacity = 10, global_indexes = nil) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 211 def create(table_name, attributes, partition_key, range_key = nil, read_capacity = 20, write_capacity = 10, global_indexes = nil) if exists?(table_name) return end attribute_definitions = [] attributes.each do |a| attribute_definitions.push({ :attribute_name => a[:name], :attribute_type => a[:type] }) end key_schema = [] key_schema.push({ :attribute_name => partition_key, :key_type => :HASH }) if range_key != nil key_schema.push({ :attribute_name => range_key, :key_type => :RANGE }) end table = { :table_name => table_name, :attribute_definitions => attribute_definitions, :key_schema => key_schema, :provisioned_throughput => { :read_capacity_units => read_capacity, :write_capacity_units => write_capacity } } if global_indexes != nil table[:global_secondary_indexes] = global_indexes end dynamodb.client.create_table(table) # wait for table to be created DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Waiting for table: [#{table_name}] to be created." dynamodb.client.wait_until(:table_exists, table_name: table_name) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Table: [#{table_name}] created." end |
#create_global_index(name, partition_key, range_key = nil, read_capacity = 20, write_capacity = 10) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 305 def create_global_index(name, partition_key, range_key = nil, read_capacity = 20, write_capacity = 10) key_schema = [] key_schema.push({ :attribute_name => partition_key, :key_type => :HASH }) if range_key != nil key_schema.push({ :attribute_name => range_key, :key_type => :RANGE }) end index = { :index_name => name, :key_schema => key_schema, :projection => { :projection_type => :ALL }, :provisioned_throughput => { :read_capacity_units => read_capacity, :write_capacity_units => write_capacity, } } return index end |
#create_table(options = {}) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 251 def create_table( = {}) if [:name] == nil raise 'A valid table name must be specified.' end if exists?([:name]) return end [:read_capacity] ||= 20 [:write_capacity] ||= 20 if ![:attributes].is_a?(Array) raise 'A valid :attributes array must be specified.' end attribute_definitions = [:attributes].map { |a| { :attribute_name => a[:name], :attribute_type => a[:type] } } hash_key = [:attributes].detect { |a| a[:key] == :hash } if hash_key == nil raise 'No Hash Key attribute has been specified.' end range_key = [:attributes].detect { |a| a[:key] == :range } key_schema = [] key_schema.push({ :attribute_name => hash_key[:name], :key_type => :HASH }) if range_key != nil key_schema.push({ :attribute_name => range_key[:name], :key_type => :RANGE }) end table = { :table_name => [:name], :attribute_definitions => attribute_definitions, :key_schema => key_schema, :provisioned_throughput => { :read_capacity_units => [:read_capacity], :write_capacity_units => [:write_capacity] } } if [:global_indexes] != nil table[:global_secondary_indexes] = [:global_indexes] end dynamodb.client.create_table(table) # wait for table to be created DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Waiting for table: [#{[:name]}] to be created." dynamodb.client.wait_until(:table_exists, table_name: [:name]) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Table: [#{[:name]}] created." end |
#drop(table_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 329 def drop(table_name) if !exists?(table_name) return end DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Dropping table: [#{table_name}]." dynamodb.client.delete_table({ table_name: table_name }) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Table: [#{table_name}] dropped." end |
#drop_index(table_name, index_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 118 def drop_index(table_name, index_name) table = { :table_name => table_name, :global_secondary_index_updates => [ :delete => { :index_name => index_name } ] } dynamodb.client.update_table(table) # wait for table to be updated DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Deleting global index: #{index_name}." wait_until_index_dropped(table_name, index_name) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Index: [#{index_name}] dropped." end |
#drop_table(table_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 340 def drop_table(table_name) if !exists?(table_name) return end DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Dropping table: [#{table_name}]." dynamodb.client.delete_table({ table_name: table_name }) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Table: [#{table_name}] dropped." end |
#exists?(table_name) ⇒ Boolean
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 10 def exists?(table_name) exists = true begin dynamodb.client.describe_table(:table_name => table_name) rescue Aws::DynamoDB::Errors::ResourceNotFoundException exists = false end return exists end |
#get_index_status(table_name, index_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 141 def get_index_status(table_name, index_name) result = dynamodb.client.describe_table(:table_name => table_name) if result.table[:global_secondary_indexes] == nil return nil end index = result.table[:global_secondary_indexes].select { |i| i[:index_name] == index_name } if index.length > 0 return index[0][:index_status] end return nil end |
#get_status(table_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 136 def get_status(table_name) result = dynamodb.client.describe_table(:table_name => table_name) return result.table[:table_status] end |
#has_index?(table_name, index_name) ⇒ Boolean
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 24 def has_index?(table_name, index_name) exists = true begin result = dynamodb.client.describe_table(:table_name => table_name) if result.table[:global_secondary_indexes] == nil return false end if result.table[:global_secondary_indexes].select { |i| i[:index_name] == index_name }.length > 0 exists = true else exists = false end rescue Aws::DynamoDB::Errors::ResourceNotFoundException exists = false end return exists end |
#update_index_throughput(table_name, index_name, read_capacity, write_capacity) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 93 def update_index_throughput(table_name, index_name, read_capacity, write_capacity) table = { :table_name => table_name, :global_secondary_index_updates => [ :update => { :index_name => index_name, :provisioned_throughput => { :read_capacity_units => read_capacity, :write_capacity_units => write_capacity } } ] } DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Updating throughput for global index: #{index_name}." dynamodb.client.update_table(table) # wait for table to be updated DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Waiting for table: [#{table_name}] to be updated." wait_until_active(table_name) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Table: [#{table_name}] updated." end |
#update_throughput(table_name, read_capacity, write_capacity) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 46 def update_throughput(table_name, read_capacity, write_capacity) if !exists?(table_name) raise "table: #{table_name}, does not exist." end table = { :table_name => table_name, :provisioned_throughput => { :read_capacity_units => read_capacity, :write_capacity_units => write_capacity } } dynamodb.client.update_table(table) # wait for table to be updated DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Waiting for table: [#{table_name}] to be updated." wait_until_active(table_name) DynamoDbFramework::LOGGER.info "[DynamoDbFramework] - Table: [#{table_name}] updated." end |
#wait_until_active(table_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 157 def wait_until_active(table_name) end_time = Time.now + 300 while Time.now < end_time do status = get_status(table_name) if status == 'ACTIVE' return end sleep(5) end raise "Timeout occured while waiting for table: #{table_name}, to become active." end |
#wait_until_index_active(table_name, index_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 175 def wait_until_index_active(table_name, index_name) end_time = Time.now + 300 while Time.now < end_time do status = get_index_status(table_name, index_name) if status == 'ACTIVE' return end sleep(5) end raise "Timeout occured while waiting for table: #{table_name}, index: #{index_name}, to become active." end |
#wait_until_index_dropped(table_name, index_name) ⇒ Object
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# File 'lib/dynamodb_framework/dynamodb_table_manager.rb', line 193 def wait_until_index_dropped(table_name, index_name) end_time = Time.now + 300 while Time.now < end_time do status = get_index_status(table_name, index_name) if status == nil return end sleep(5) end raise "Timeout occured while waiting for table: #{table_name}, index: #{index_name}, to be dropped." end |