+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+
require "arvados/keep"
module Arv
end
def cp_r(source, target, source_collection=nil)
- opts = {descend_target: !source.end_with?("/")}
+ opts = {:descend_target => !source.end_with?("/")}
copy(:merge, source.chomp("/"), target, source_collection, opts)
end
end
def rm_r(source)
- remove(source, recursive: true)
+ remove(source, :recursive => true)
end
protected
modified
end
- LocatorSegment = Struct.new(:locators, :start_pos, :length)
+ Struct.new("LocatorSegment", :locators, :start_pos, :length)
class LocatorRange < Range
attr_reader :locator
end_index = search_for_byte(start_pos + length - 1, start_index)
end
seg_ranges = @ranges[start_index..end_index]
- LocatorSegment.new(seg_ranges.map(&:locator),
- start_pos - seg_ranges.first.begin,
- length)
+ Struct::LocatorSegment.new(seg_ranges.map(&:locator),
+ start_pos - seg_ranges.first.begin,
+ length)
end
private
loop do
ii = (lo + hi) / 2
range = @ranges[ii]
- if range.include?(target)
+ if range.include?(target) && (target < range.end || ii == hi-1)
return ii
elsif ii == lo
raise RangeError.new("%i not in segment" % target)
end
def add_copy(src_item, key)
- self[key] = src_item.copy_named("#{path}/#{key}")
+ if key == "."
+ self[key] = src_item.copy_named("#{path}")
+ else
+ self[key] = src_item.copy_named("#{path}/#{key}")
+ end
end
def merge(src_item, key)
items["."] = CollectionStream.new(".")
end
+ def add_copy(src_item, key)
+ items["."].add_copy(src_item, key)
+ end
+
def raise_root_write_error(key)
raise ArgumentError.new("can't write to %p at collection root" % key)
end
def initialize(name)
@name = name
- @loc_ranges = {}
+ @loc_ranges = []
@loc_range_start = 0
@file_specs = []
end
def add_file(coll_file)
coll_file.each_segment do |segment|
- extend_locator_ranges(segment.locators)
extend_file_specs(coll_file.name, segment)
end
end
""
else
"%s %s %s\n" % [escape_name(@name),
- @loc_ranges.keys.join(" "),
+ @loc_ranges.collect(&:locator).join(" "),
@file_specs.join(" ")]
end
end
private
- def extend_locator_ranges(locators)
- locators.
- select { |loc_s| not @loc_ranges.include?(loc_s) }.
- each do |loc_s|
- @loc_ranges[loc_s] = LocatorRange.new(loc_s, @loc_range_start)
- @loc_range_start = @loc_ranges[loc_s].end
+ def extend_file_specs(filename, segment)
+ found_overlap = false
+ # Find the longest prefix of segment.locators that's a suffix
+ # of the existing @loc_ranges. If we find one, drop those
+ # locators (they'll be added back below, when we're handling
+ # the normal/no-overlap case).
+ (1..segment.locators.length).each do |overlap|
+ if @loc_ranges.length >= overlap && @loc_ranges[-overlap..-1].collect(&:locator) == segment.locators[0..overlap-1]
+ (1..overlap).each do
+ discarded = @loc_ranges.pop
+ @loc_range_start -= (discarded.end - discarded.begin)
+ end
+ found_overlap = true
+ break
+ end
end
- end
- def extend_file_specs(filename, segment)
- # Given a filename and a LocatorSegment, add the smallest
- # possible array of file spec strings to @file_specs that
- # builds the file from available locators.
- filename = escape_name(filename)
- start_pos = segment.start_pos
- length = segment.length
- start_loc = segment.locators.first
- prev_loc = start_loc
- # Build a list of file specs by iterating through the segment's
- # locators and preparing a file spec for each contiguous range.
- segment.locators[1..-1].each do |loc_s|
- range = @loc_ranges[loc_s]
- if range.begin != @loc_ranges[prev_loc].end
- range_start, range_length =
- start_and_length_at(start_loc, prev_loc, start_pos, length)
- @file_specs << "#{range_start}:#{range_length}:#{filename}"
- start_pos = 0
- length -= range_length
- start_loc = loc_s
+ # If there was no overlap at the end of our existing
+ # @loc_ranges, check whether the full set of segment.locators
+ # appears earlier in @loc_ranges. If so, use those instead of
+ # appending the same locators again.
+ if !found_overlap && segment.locators.length < @loc_ranges.length
+ segment_start = 0
+ (0..@loc_ranges.length-1).each do |ri|
+ if @loc_ranges[ri..ri+segment.locators.length-1].collect(&:locator) == segment.locators
+ @file_specs << "#{segment.start_pos + @loc_ranges[ri].begin}:#{segment.length}:#{escape_name(filename)}"
+ return
+ end
end
- prev_loc = loc_s
end
- range_start, range_length =
- start_and_length_at(start_loc, prev_loc, start_pos, length)
- @file_specs << "#{range_start}:#{range_length}:#{filename}"
+
+ segment_start = @loc_range_start
+ segment.locators.each do |loc_s|
+ r = LocatorRange.new(loc_s, @loc_range_start)
+ @loc_ranges << r
+ @loc_range_start = r.end
+ end
+ @file_specs << "#{segment.start_pos + segment_start}:#{segment.length}:#{escape_name(filename)}"
end
def escape_name(name)
s.each_byte.map { |c| "\\%03o" % c }.join("")
end
end
-
- def start_and_length_at(start_key, end_key, start_pos, length)
- range_begin = @loc_ranges[start_key].begin + start_pos
- range_length = [@loc_ranges[end_key].end - range_begin, length].min
- [range_begin, range_length]
- end
end
end
end
projects / arvados.git / blobdiff