Class: Awful::DynamoDB
Constant Summary collapse
- COLORS =
{ CREATING: :yellow, UPDATING: :yellow, DELETING: :red, ACTIVE: :green, }
Instance Method Summary collapse
- #batch_write(name) ⇒ Object
- #copy(src, dst) ⇒ Object
- #create_table(name, file = nil) ⇒ Object
- #delete_table(name) ⇒ Object
- #dump(name) ⇒ Object
- #enable_streams(name) ⇒ Object
- #gsi(name) ⇒ Object
- #keys(name) ⇒ Object
- #ls(name = /./) ⇒ Object
- #lsi(name) ⇒ Object
- #put_items(name, file = nil) ⇒ Object
- #query(name, exclusive_start_key = nil) ⇒ Object
- #scan(name, exclusive_start_key = nil) ⇒ Object
- #status(name) ⇒ Object
- #tag(name, *tags) ⇒ Object
- #tags(name) ⇒ Object
- #throughput(name) ⇒ Object
- #ttl(name, attribute = nil) ⇒ Object
Methods inherited from Cli
Constructor Details
This class inherits a constructor from Awful::Cli
Instance Method Details
#batch_write(name) ⇒ Object
372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 |
# File 'lib/awful/dynamodb.rb', line 372 def batch_write(name) items = (1..25).map do |n| { put_request: { item: { "store_id" => "store#{n}", "object_id" => "object#{n}", "object_value" => "value#{n}" } } } end p items r = dynamodb.batch_write_item(request_items: {name => items}) p r end |
#copy(src, dst) ⇒ Object
232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 |
# File 'lib/awful/dynamodb.rb', line 232 def copy(src, dst) src_table, src_region = src.split('/').reverse # parse region/table into [table, region] dst_table, dst_region = dst.split('/').reverse ## clients are potentially for different regions src_client = Aws::DynamoDB::Client.new({region: src_region}.reject{|_,v| v.nil?}) dst_client = Aws::DynamoDB::Client.new({region: dst_region}.reject{|_,v| v.nil?}) ## params for put_item call params = {table_name: dst_table} ## add condition not to overwrite existing primary keys (hash or composite hash AND range) if [:no_clobber] keys = dst_client.describe_table(table_name: dst_table).table.key_schema.map(&:attribute_name) params.merge!(condition_expression: keys.map{|key| "attribute_not_exists(#{key})"}.join(' AND ')) end ## lame progress indicator, pass true for put, false for skip dots = [:dots] ? ->(x){print x ? '.' : 'x'} : ->(_){} ## loop on each batch of scanned items exclusive_start_key = nil loop do r = src_client.scan(table_name: src_table, exclusive_start_key: exclusive_start_key, return_consumed_capacity: 'INDEXES') puts "[#{Time.now}] [#{src_table}] scanned:#{r.count} key:#{r.last_evaluated_key || 'nil'}" ## loop items and put to destination put = skipped = 0 r.items.each do |item| begin dst_client.put_item(params.merge(item: item)) put += 1 dots.call(true) rescue Aws::DynamoDB::Errors::ConditionalCheckFailedException #item key exists skipped += 1 dots.call(false) end end print "\n" if [:dots] puts "[#{Time.now}] [#{dst_table}] put:#{put} skipped:#{skipped}" ## loop if there are more keys to scan exclusive_start_key = r.last_evaluated_key break unless exclusive_start_key end end |
#create_table(name, file = nil) ⇒ Object
87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 |
# File 'lib/awful/dynamodb.rb', line 87 def create_table(name, file = nil) opt = load_cfg(, file) params = only_keys_matching(opt, %i[attribute_definitions key_schema]) params[:table_name] = name params[:provisioned_throughput] = only_keys_matching(opt[:provisioned_throughput], %i[read_capacity_units write_capacity_units]) ## scrub unwanted keys from LSIs if opt.has_key?(:local_secondary_indexes) params[:local_secondary_indexes] = opt[:local_secondary_indexes].map do |lsi| only_keys_matching(lsi, %i[index_name key_schema projection]) end end ## scrub unwanted keys from GSIs if opt.has_key?(:global_secondary_indexes) params[:global_secondary_indexes] = opt[:global_secondary_indexes].map do |gsi| only_keys_matching(gsi, %i[index_name key_schema projection]).output do |g| if gsi[:provisioned_throughput] g[:provisioned_throughput] = only_keys_matching(gsi[:provisioned_throughput], %i[read_capacity_units write_capacity_units]) end end end end dynamodb.create_table(params) end |
#delete_table(name) ⇒ Object
219 220 221 222 223 224 225 226 227 |
# File 'lib/awful/dynamodb.rb', line 219 def delete_table(name) confirmation = ask("to delete #{name} and all its data, type the name of table to delete:", :yellow) if confirmation == name say("deleting table #{name}") dynamodb.delete_table(table_name: name) else say("confirmation failed for #{name}", :red) end end |
#dump(name) ⇒ Object
66 67 68 69 70 71 72 |
# File 'lib/awful/dynamodb.rb', line 66 def dump(name) all_matching_tables(name).map do |table_name| dynamodb.describe_table(table_name: table_name).table.to_hash.output do |table| puts YAML.dump(stringify_keys(table)) end end end |
#enable_streams(name) ⇒ Object
212 213 214 215 216 |
# File 'lib/awful/dynamodb.rb', line 212 def enable_streams(name) stream_specification = {stream_enabled: ![:disable]} stream_specification.merge!(stream_view_type: [:stream_view_type].upcase) unless [:disable] dynamodb.update_table(table_name: name, stream_specification: stream_specification) end |
#gsi(name) ⇒ Object
117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 |
# File 'lib/awful/dynamodb.rb', line 117 def gsi(name) (dynamodb.describe_table(table_name: name).table.global_secondary_indexes || []).output do |list| if [:long] print_table list.map { |i| hash = i.key_schema.find{ |k| k.key_type == 'HASH' }&.attribute_name range = i.key_schema.find{ |k| k.key_type == 'RANGE' }&.attribute_name [i.index_name, color(i.index_status), hash, range, i.projection.projection_type, i.provisioned_throughput.read_capacity_units, i.provisioned_throughput.write_capacity_units, i.index_size_bytes, i.item_count] }.sort elsif [:arn] puts list.map(&:index_arn).sort else puts list.map(&:index_name).sort end end end |
#keys(name) ⇒ Object
80 81 82 83 84 |
# File 'lib/awful/dynamodb.rb', line 80 def keys(name) dynamodb.describe_table(table_name: name).table.key_schema.each_with_object({}) do |schema, h| h[schema.key_type.downcase.to_sym] = schema.attribute_name end.output(&method(:print_table)) end |
#ls(name = /./) ⇒ Object
51 52 53 54 55 56 57 58 59 60 61 62 63 |
# File 'lib/awful/dynamodb.rb', line 51 def ls(name = /./) tables = all_matching_tables(name) if [:long] tables.map do |table| dynamodb.describe_table(table_name: table).table end.output do |list| print_table list.map { |t| [ t.table_name, color(t.table_status), t.item_count, t.table_size_bytes, t.creation_date_time ] } end else tables.output(&method(:puts)) end end |
#lsi(name) ⇒ Object
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 |
# File 'lib/awful/dynamodb.rb', line 138 def lsi(name) (dynamodb.describe_table(table_name: name).table.local_secondary_indexes || []).output do |list| if [:long] print_table list.map { |i| hash = i.key_schema.find{ |k| k.key_type == 'HASH' }&.attribute_name range = i.key_schema.find{ |k| k.key_type == 'RANGE' }&.attribute_name [i.index_name, hash, range, i.projection.projection_type, i.index_size_bytes, i.item_count] }.sort elsif [:arn] puts list.map(&:index_arn).sort else puts list.map(&:index_name).sort end end end |
#put_items(name, file = nil) ⇒ Object
342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 |
# File 'lib/awful/dynamodb.rb', line 342 def put_items(name, file = nil) params = {'TableName' => name} ## set a condition not to overwrite items with existing primary key(s) if [:no_clobber] keys = dynamodb.describe_table(table_name: name).table.key_schema.map(&:attribute_name) params.merge!('ConditionExpression' => keys.map{|key| "attribute_not_exists(#{key})"}.join(' AND ')) end ## input data io = (file and File.open(file)) || ((not $stdin.tty?) and $stdin) put_count = 0 skip_count = 0 io.each_line do |line| begin dynamodb_simple.put_item(params.merge('Item' => JSON.parse(line))) put_count += 1 rescue Aws::DynamoDB::Errors::ConditionalCheckFailedException #item key exists skip_count += 1 end end ## return counts [put_count, skip_count].output do |put, skip| puts "put #{put} items, skipped #{skip} items" end end |
#query(name, exclusive_start_key = nil) ⇒ Object
311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 |
# File 'lib/awful/dynamodb.rb', line 311 def query(name, exclusive_start_key = nil) fd = [:output] ? File.open([:output], 'w') : $stdout.dup # open output file or stdout exclusive_start_key = nil count = 0 condition = "#{[:hash_key]} = :hash_key_value" condition += " and #{[:range_key]} = :range_key_value" if [:range_key] attributes = { ':hash_key_value' => { S: [:hash_key_value] }, ':range_key_value' => { S: [:range_key_value] }, }.reject { |_,v| v[:S].nil? } loop do r = dynamodb_simple.query( 'TableName' => name, 'ExclusiveStartKey' => exclusive_start_key, 'Select' => [:count] ? 'COUNT' : 'ALL_ATTRIBUTES', 'KeyConditionExpression' => condition, 'ExpressionAttributeValues' => attributes, ) count += r.fetch('Count', 0) r.fetch('Items', []).each do |item| fd.puts JSON.generate(item) end exclusive_start_key = r['LastEvaluatedKey'] break unless exclusive_start_key end fd.close puts count if [:count] end |
#scan(name, exclusive_start_key = nil) ⇒ Object
283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 |
# File 'lib/awful/dynamodb.rb', line 283 def scan(name, exclusive_start_key = nil) fd = [:output] ? File.open([:output], 'w') : $stdout.dup # open output file or stdout exclusive_start_key = nil count = 0 loop do r = dynamodb_simple.scan( 'TableName' => name, 'Select' => [:count] ? 'COUNT' : 'ALL_ATTRIBUTES', 'ExclusiveStartKey' => exclusive_start_key ) count += r.fetch('Count', 0) r.fetch('Items', []).each do |item| fd.puts JSON.generate(item) end exclusive_start_key = r['LastEvaluatedKey'] break unless exclusive_start_key end fd.close puts count if [:count] end |
#status(name) ⇒ Object
75 76 77 |
# File 'lib/awful/dynamodb.rb', line 75 def status(name) dynamodb.describe_table(table_name: name).table.table_status.output(&method(:puts)) end |
#tag(name, *tags) ⇒ Object
399 400 401 402 403 404 405 406 407 |
# File 'lib/awful/dynamodb.rb', line 399 def tag(name, *) dynamodb.tag_resource( resource_arn: get_arn(name), tags: .map { |t| k, v = t.split(/[=:]/) {key: k, value: v} } ) end |
#tags(name) ⇒ Object
390 391 392 393 394 395 396 |
# File 'lib/awful/dynamodb.rb', line 390 def (name) paginate(:tags) do |token| dynamodb.(resource_arn: get_arn(name), next_token: token) end.output do || print_table .map { |t| [t.key, t.value] } end end |
#throughput(name) ⇒ Object
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 |
# File 'lib/awful/dynamodb.rb', line 160 def throughput(name) table = dynamodb.describe_table(table_name: name).table ## current is hash of current provisioned throughput current = table.provisioned_throughput.to_h ## loop-safe version of GSIs (in case nil) global_secondary_indexes = table.global_secondary_indexes || [] ## get throughput for each GSI global_secondary_indexes.each do |gsi| current[gsi.index_name] = gsi.provisioned_throughput.to_h end ## if no updates requested, just print throughput and return table details unless [:read_capacity_units] or [:write_capacity_units] puts YAML.dump(stringify_keys(current)) return table end ## parameters for update request params = { table_name: name } ## add table throughput unless told not to params[:provisioned_throughput] = { read_capacity_units: [:read_capacity_units] || current[:read_capacity_units], write_capacity_units: [:write_capacity_units] || current[:write_capacity_units] } if [:table] ## list of requested GSIs, or all for this table gsis = [:gsi] gsis = global_secondary_indexes.map(&:index_name) if [:all] params[:global_secondary_index_updates] = gsis.map do |gsi| { update: { index_name: gsi, provisioned_throughput: { read_capacity_units: [:read_capacity_units] || current[gsi][:read_capacity_units], write_capacity_units: [:write_capacity_units] || current[gsi][:write_capacity_units] } } } end ## make the update request params.reject! { |_,v| v.empty? } # sdk hates empty global_secondary_index_updates dynamodb.update_table(params) end |
#ttl(name, attribute = nil) ⇒ Object
411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 |
# File 'lib/awful/dynamodb.rb', line 411 def ttl(name, attribute = nil) if attribute dynamodb.update_time_to_live( table_name: name, time_to_live_specification: { enabled: ![:disable], attribute_name: attribute, } ) else dynamodb.describe_time_to_live(table_name: name).time_to_live_description.output do |t| puts YAML.dump(stringify_keys(t.to_hash)) end end end |