Class: Aerospike::Command
- Inherits:
-
Object
- Object
- Aerospike::Command
- Defined in:
- lib/aerospike/command/command.rb
Overview
:nodoc:
Direct Known Subclasses
Instance Method Summary collapse
- #execute ⇒ Object
-
#initialize(node = nil) ⇒ Command
constructor
A new instance of Command.
-
#set_delete(policy, key) ⇒ Object
Writes the command for delete operations.
-
#set_exists(policy, key) ⇒ Object
Writes the command for exist operations.
-
#set_operate(policy, key, operations) ⇒ Object
Implements different command operations.
-
#set_read(policy, key, bin_names) ⇒ Object
Writes the command for get operations (specified bins).
-
#set_read_for_key_only(policy, key) ⇒ Object
Writes the command for get operations (all bins).
-
#set_read_header(policy, key) ⇒ Object
Writes the command for getting metadata operations.
- #set_scan(policy, namespace, set_name, bin_names) ⇒ Object
-
#set_touch(policy, key) ⇒ Object
Writes the command for touch operations.
- #set_udf(policy, key, package_name, function_name, args) ⇒ Object
-
#set_write(policy, operation, key, bins) ⇒ Object
Writes the command for write operations.
-
#write_bins ⇒ Object
List of all bins that this command will write to - sub-classes should override this as appropriate.
Constructor Details
#initialize(node = nil) ⇒ Command
Returns a new instance of Command.
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# File 'lib/aerospike/command/command.rb', line 89 def initialize(node=nil) @data_offset = 0 @data_buffer = nil @node = node @compress = false # will add before use @sequence = Atomic.new(-1) self end |
Instance Method Details
#execute ⇒ Object
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# File 'lib/aerospike/command/command.rb', line 427 def execute iterations = 0 # set timeout outside the loop limit = Time.now + @policy.timeout # Execute command until successful, timed out or maximum iterations have been reached. while true # too many retries iterations += 1 break if (@policy.max_retries > 0) && (iterations > @policy.max_retries+1) # Sleep before trying again, after the first iteration sleep(@policy.sleep_between_retries) if iterations > 1 && @policy.sleep_between_retries > 0 # check for command timeout break if @policy.timeout > 0 && Time.now > limit begin @node = get_node @conn = @node.get_connection(@policy.timeout) rescue => e # Socket connection error has occurred. Decrease health and retry. @node.decrease_health Aerospike.logger.error("Node #{@node.to_s}: #{e}") next end # Draw a buffer from buffer pool, and make sure it will be put back begin @data_buffer = Buffer.get # Set command buffer. begin write_buffer rescue => e Aerospike.logger.error(e) # All runtime exceptions are considered fatal. Do not retry. # Close socket to flush out possible garbage. Do not put back in pool. @conn.close if @conn raise e end # Reset timeout in send buffer (destined for server) and socket. @data_buffer.write_int32((@policy.timeout * 1000).to_i, 22) # Send command. begin @conn.write(@data_buffer, @data_offset) rescue => e # IO errors are considered temporary anomalies. Retry. # Close socket to flush out possible garbage. Do not put back in pool. @conn.close if @conn Aerospike.logger.error("Node #{@node.to_s}: #{e}") # IO error means connection to server @node is unhealthy. # Reflect cmd status. @node.decrease_health next end # Parse results. begin parse_result rescue => e case e # do not log the following exceptions when Aerospike::Exceptions::ScanTerminated when Aerospike::Exceptions::QueryTerminated else Aerospike.logger.error(e) end # close the connection # cancelling/closing the batch/multi commands will return an error, which will # close the connection to throw away its data and signal the server about the # situation. We will not put back the connection in the buffer. @conn.close if @conn raise e end # Reflect healthy status. @node.restore_health # Put connection back in pool. @node.put_connection(@conn) # command has completed successfully. Exit method. return ensure Buffer.put(@data_buffer) end end # while # execution timeout raise Aerospike::Exceptions::Timeout.new(limit, iterations) end |
#set_delete(policy, key) ⇒ Object
Writes the command for delete operations
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# File 'lib/aerospike/command/command.rb', line 136 def set_delete(policy, key) begin_cmd field_count = estimate_key_size(key) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 size_buffer write_header_with_policy(policy, 0, INFO2_WRITE|INFO2_DELETE, field_count, 0) write_key(key) write_predexp(policy.predexp, predexp_size) end_cmd end |
#set_exists(policy, key) ⇒ Object
Writes the command for exist operations
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# File 'lib/aerospike/command/command.rb', line 168 def set_exists(policy, key) begin_cmd field_count = estimate_key_size(key) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 size_buffer write_header(policy, INFO1_READ|INFO1_NOBINDATA, 0, field_count, 0) write_key(key) write_predexp(policy.predexp, predexp_size) end_cmd end |
#set_operate(policy, key, operations) ⇒ Object
Implements different command operations
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# File 'lib/aerospike/command/command.rb', line 250 def set_operate(policy, key, operations) begin_cmd field_count = estimate_key_size(key, policy) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 read_attr = 0 write_attr = 0 read_header = false record_bin_multiplicity = policy.record_bin_multiplicity == RecordBinMultiplicity::ARRAY operations.each do |operation| case operation.op_type when Aerospike::Operation::READ, Aerospike::Operation::CDT_READ, Aerospike::Operation::HLL_READ, Aerospike::Operation::BIT_READ read_attr |= INFO1_READ # Read all bins if no bin is specified. read_attr |= INFO1_GET_ALL unless operation.bin_name when Aerospike::Operation::READ_HEADER # The server does not currently return record header data with _INFO1_NOBINDATA attribute set. # The workaround is to request a non-existent bin. # TODO: Fix this on server. # read_attr |= _INFO1_READ | _INFO1_NOBINDATA read_attr |= INFO1_READ read_header = true else write_attr = INFO2_WRITE end if [Aerospike::Operation::HLL_MODIFY, Aerospike::Operation::HLL_READ, Aerospike::Operation::BIT_MODIFY, Aerospike::Operation::BIT_READ].include?(operation.op_type) record_bin_multiplicity = true end estimate_operation_size_for_operation(operation) end size_buffer write_attr |= INFO2_RESPOND_ALL_OPS if write_attr != 0 && record_bin_multiplicity if write_attr != 0 write_header_with_policy(policy, read_attr, write_attr, field_count, operations.length) else write_header(policy, read_attr, write_attr, field_count, operations.length) end write_key(key, policy) write_predexp(policy.predexp, predexp_size) operations.each do |operation| write_operation_for_operation(operation) end write_operation_for_bin(nil, Aerospike::Operation::READ) if read_header end_cmd mark_compressed(policy) end |
#set_read(policy, key, bin_names) ⇒ Object
Writes the command for get operations (specified bins)
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# File 'lib/aerospike/command/command.rb', line 198 def set_read(policy, key, bin_names) if bin_names && bin_names.length > 0 begin_cmd field_count = estimate_key_size(key) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 bin_names.each do |bin_name| estimate_operation_size_for_bin_name(bin_name) end size_buffer write_header(policy, INFO1_READ, 0, field_count, bin_names.length) write_key(key) write_predexp(policy.predexp, predexp_size) bin_names.each do |bin_name| write_operation_for_bin_name(bin_name, Aerospike::Operation::READ) end end_cmd else set_read_for_key_only(policy, key) end end |
#set_read_for_key_only(policy, key) ⇒ Object
Writes the command for get operations (all bins)
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# File 'lib/aerospike/command/command.rb', line 183 def set_read_for_key_only(policy, key) begin_cmd field_count = estimate_key_size(key) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 size_buffer write_header(policy, INFO1_READ|INFO1_GET_ALL, 0, field_count, 0) write_key(key) write_predexp(policy.predexp, predexp_size) end_cmd end |
#set_read_header(policy, key) ⇒ Object
Writes the command for getting metadata operations
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# File 'lib/aerospike/command/command.rb', line 227 def set_read_header(policy, key) begin_cmd field_count = estimate_key_size(key) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 estimate_operation_size_for_bin_name('') size_buffer # The server does not currently return record header data with _INFO1_NOBINDATA attribute set. # The workaround is to request a non-existent bin. # TODO: Fix this on server. #command.set_read(INFO1_READ | _INFO1_NOBINDATA); write_header(policy, INFO1_READ, 0, field_count, 1) write_key(key) write_predexp(policy.predexp, predexp_size) write_operation_for_bin_name('', Aerospike::Operation::READ) end_cmd end |
#set_scan(policy, namespace, set_name, bin_names) ⇒ Object
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# File 'lib/aerospike/command/command.rb', line 336 def set_scan(policy, namespace, set_name, bin_names) # Estimate buffer size begin_cmd field_count = 0 if namespace @data_offset += namespace.bytesize + FIELD_HEADER_SIZE field_count += 1 end if set_name @data_offset += set_name.bytesize + FIELD_HEADER_SIZE field_count += 1 end if policy.records_per_second > 0 @data_offset += 4 + FIELD_HEADER_SIZE field_count += 1 end predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 # Estimate scan options size. @data_offset += 2 + FIELD_HEADER_SIZE field_count += 1 # Estimate scan timeout size. @data_offset += 4 + FIELD_HEADER_SIZE field_count += 1 if bin_names bin_names.each do |bin_name| estimate_operation_size_for_bin_name(bin_name) end end size_buffer read_attr = INFO1_READ if !policy.include_bin_data read_attr |= INFO1_NOBINDATA end operation_count = 0 if bin_names operation_count = bin_names.length end write_header(policy, read_attr, 0, field_count, operation_count) if namespace write_field_string(namespace, Aerospike::FieldType::NAMESPACE) end if set_name write_field_string(set_name, Aerospike::FieldType::TABLE) end if policy.records_per_second > 0 write_field_int(policy.records_per_second, Aerospike::FieldType::RECORDS_PER_SECOND) end write_predexp(policy.predexp, predexp_size) write_field_header(2, Aerospike::FieldType::SCAN_OPTIONS) priority = policy.priority & 0xFF priority <<= 4 if policy.fail_on_cluster_change priority |= 0x08 end @data_buffer.write_byte(priority, @data_offset) @data_offset += 1 @data_buffer.write_byte(policy.scan_percent.to_i.ord, @data_offset) @data_offset += 1 write_field_header(4, Aerospike::FieldType::SCAN_TIMEOUT) @data_buffer.write_uint32(policy.socket_timeout.to_i, @data_offset) @data_offset += 4 if bin_names bin_names.each do |bin_name| write_operation_for_bin_name(bin_name, Aerospike::Operation::READ) end end end_cmd end |
#set_touch(policy, key) ⇒ Object
Writes the command for touch operations
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# File 'lib/aerospike/command/command.rb', line 151 def set_touch(policy, key) begin_cmd field_count = estimate_key_size(key) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 estimate_operation_size size_buffer write_header_with_policy(policy, 0, INFO2_WRITE, field_count, 1) write_key(key) write_predexp(policy.predexp, predexp_size) write_operation_for_operation_type(Aerospike::Operation::TOUCH) end_cmd end |
#set_udf(policy, key, package_name, function_name, args) ⇒ Object
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# File 'lib/aerospike/command/command.rb', line 313 def set_udf(policy, key, package_name, function_name, args) begin_cmd field_count = estimate_key_size(key, policy) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 arg_bytes = args.to_bytes field_count += estimate_udf_size(package_name, function_name, arg_bytes) size_buffer write_header(policy, 0, INFO2_WRITE, field_count, 0) write_key(key, policy) write_predexp(policy.predexp, predexp_size) write_field_string(package_name, Aerospike::FieldType::UDF_PACKAGE_NAME) write_field_string(function_name, Aerospike::FieldType::UDF_FUNCTION) write_field_bytes(arg_bytes, Aerospike::FieldType::UDF_ARGLIST) end_cmd mark_compressed(policy) end |
#set_write(policy, operation, key, bins) ⇒ Object
Writes the command for write operations
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# File 'lib/aerospike/command/command.rb', line 110 def set_write(policy, operation, key, bins) begin_cmd field_count = estimate_key_size(key, policy) predexp_size = estimate_predexp(policy.predexp) field_count += 1 if predexp_size > 0 bins.each do |bin| estimate_operation_size_for_bin(bin) end size_buffer write_header_with_policy(policy, 0, INFO2_WRITE, field_count, bins.length) write_key(key, policy) write_predexp(policy.predexp, predexp_size) bins.each do |bin| write_operation_for_bin(bin, operation) end end_cmd mark_compressed(policy) end |
#write_bins ⇒ Object
List of all bins that this command will write to - sub-classes should override this as appropriate.
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# File 'lib/aerospike/command/command.rb', line 105 def write_bins [] end |