+def init_config
+ # read authentication data from arvados configuration file if present
+ lineno = 0
+ config_file = File.expand_path('~/.config/arvados/settings.conf') rescue nil
+ if not config_file.nil? and File.exist? config_file then
+ File.open(config_file, 'r').each do |line|
+ lineno = lineno + 1
+ # skip comments
+ if line.match('^\s*#') then
+ next
+ end
+ var, val = line.chomp.split('=', 2)
+ # allow environment settings to override config files.
+ if var and val
+ ENV[var] ||= val
+ else
+ warn "#{config_file}: #{lineno}: could not parse `#{line}'"
+ end
+ end
+ end
+end
+
+
+subcommands = %w(copy create edit get keep pipeline run tag ws)
+
+def exec_bin bin, opts
+ bin_path = `which #{bin.shellescape}`.strip
+ if bin_path.empty?
+ raise "#{bin}: command not found"
+ end
+ exec bin_path, *opts
+end
+
+def check_subcommands client, arvados, subcommand, global_opts, remaining_opts
+ case subcommand
+ when 'create'
+ arv_create client, arvados, global_opts, remaining_opts
+ when 'edit'
+ arv_edit client, arvados, global_opts, remaining_opts
+ when 'get'
+ arv_get client, arvados, global_opts, remaining_opts
+ when 'copy', 'tag', 'ws', 'run'
+ exec_bin "arv-#{subcommand}", remaining_opts
+ when 'keep'
+ @sub = remaining_opts.shift
+ if ['get', 'put', 'ls', 'normalize'].index @sub then
+ # Native Arvados
+ exec_bin "arv-#{@sub}", remaining_opts
+ elsif @sub == 'docker'
+ exec_bin "arv-keepdocker", remaining_opts
+ else
+ puts "Usage: arv keep [method] [--parameters]\n"
+ puts "Use 'arv keep [method] --help' to get more information about specific methods.\n\n"
+ puts "Available methods: ls, get, put, docker"
+ end
+ abort
+ end
+end
+
+def command_exists?(command)
+ File.executable?(command) || ENV['PATH'].split(':').any? {|folder| File.executable?(File.join(folder, command))}
+end
+
+def run_editor path
+ pid = Process::fork
+ if pid.nil?
+ editor = nil
+ [ENV["VISUAL"], ENV["EDITOR"], "nano", "vi"].each do |e|
+ editor ||= e if e and command_exists? e
+ end
+ if editor.nil?
+ abort "Could not find any editor to use, please set $VISUAL or $EDITOR to your desired editor."
+ end
+ exec editor, path
+ else
+ Process.wait pid
+ end
+
+ if $?.exitstatus != 0
+ raise "Editor exited with status #{$?.exitstatus}"
+ end
+end
+
+def edit_and_commit_object initial_obj, tmp_stem, global_opts, &block
+
+ content = get_obj_content initial_obj, global_opts
+
+ tmp_file = Tempfile.new([tmp_stem, ".#{global_opts[:format]}"])
+ tmp_file.write(content)
+ tmp_file.close
+
+ begin
+ error_text = ''
+ while true
+ begin
+ run_editor tmp_file.path
+
+ tmp_file.open
+ newcontent = tmp_file.read()
+ tmp_file.close
+
+ # Strip lines starting with '#'
+ newcontent = newcontent.lines.select {|l| !l.start_with? '#'}.join
+
+ # Load the new object
+ newobj = case global_opts[:format]
+ when 'json'
+ Oj.load(newcontent)
+ when 'yaml'
+ YAML.load(newcontent)
+ else
+ abort "Unrecognized format #{global_opts[:format]}"
+ end
+
+ yield newobj
+
+ break
+ rescue => e
+ can_retry = true
+ if e.is_a? Psych::SyntaxError
+ this_error = "YAML error parsing your input: #{e}"
+ elsif e.is_a? JSON::ParserError or e.is_a? Oj::ParseError
+ this_error = "JSON error parsing your input: #{e}"
+ elsif e.is_a? ArvadosAPIError
+ this_error = "API responded with error #{e}"
+ else
+ this_error = "#{e.class}: #{e}"
+ can_retry = false
+ end
+ puts this_error
+
+ tmp_file.open
+ newcontent = tmp_file.read()
+ tmp_file.close
+
+ if newcontent == error_text or not can_retry
+ FileUtils::cp tmp_file.path, tmp_file.path + ".saved"
+ puts "File is unchanged, edit aborted." if can_retry
+ abort "Saved contents to " + tmp_file.path + ".saved"
+ else
+ tmp_file.open
+ tmp_file.truncate 0
+ error_text = this_error.to_s.lines.map {|l| '# ' + l}.join + "\n"
+ error_text += "# Please fix the error and try again.\n"
+ error_text += newcontent.lines.select {|l| !l.start_with? '#'}.join
+ tmp_file.write error_text
+ tmp_file.close
+ end
+ end
+ end
+ ensure
+ tmp_file.close(true)
+ end
+
+ nil
+end
+
+class ArvadosAPIError < RuntimeError
+end
+
+def check_response result
+ begin
+ results = JSON.parse result.body
+ rescue JSON::ParserError, Oj::ParseError => e
+ raise "Failed to parse server response:\n" + e.to_s
+ end
+
+ if result.response.status != 200
+ raise ArvadosAPIError.new("#{result.response.status}: #{
+ ((results['errors'] && results['errors'].join('\n')) ||
+ Net::HTTPResponse::CODE_TO_OBJ[status.to_s].to_s.sub(/^Net::HTTP/, '').titleize)}")
+ end
+
+ results
+end
+
+def lookup_uuid_rsc arvados, uuid
+ m = /([a-z0-9]{5})-([a-z0-9]{5})-([a-z0-9]{15})/.match uuid
+ if !m
+ if /^[a-f0-9]{32}/.match uuid
+ abort "Arvados collections are not editable."
+ else
+ abort "'#{uuid}' does not appear to be an Arvados uuid"
+ end
+ end
+
+ rsc = nil
+ arvados.discovery_document["resources"].each do |k,v|
+ klass = k.singularize.camelize
+ dig = Digest::MD5.hexdigest(klass).to_i(16).to_s(36)[-5..-1]
+ if dig == m[2]
+ rsc = k
+ end
+ end
+
+ if rsc.nil?
+ abort "Could not determine resource type #{m[2]}"
+ end
+
+ return rsc
+end
+
+def fetch_rsc_obj client, arvados, rsc, uuid, remaining_opts
+
+ begin
+ result = client.execute(:api_method => eval('arvados.' + rsc + '.get'),
+ :parameters => {"uuid" => uuid},
+ :authenticated => false,
+ :headers => {
+ authorization: 'OAuth2 '+ENV['ARVADOS_API_TOKEN']
+ })
+ obj = check_response result
+ rescue => e
+ abort "Server error: #{e}"
+ end
+
+ if remaining_opts.length > 0
+ obj.select! { |k, v| remaining_opts.include? k }
+ end
+
+ return obj
+end
+
+def get_obj_content obj, global_opts
+ content = case global_opts[:format]
+ when 'json'
+ Oj.dump(obj, :indent => 1)
+ when 'yaml'
+ obj.to_yaml
+ else
+ abort "Unrecognized format #{global_opts[:format]}"
+ end
+ return content
+end
+
+def arv_edit client, arvados, global_opts, remaining_opts
+ uuid = remaining_opts.shift
+ if uuid.nil? or uuid == "-h" or uuid == "--help"
+ puts head_banner
+ puts "Usage: arv edit [uuid] [fields...]\n\n"
+ puts "Fetch the specified Arvados object, select the specified fields, \n"
+ puts "open an interactive text editor on a text representation (json or\n"
+ puts "yaml, use --format) and then update the object. Will use 'nano'\n"
+ puts "by default, customize with the EDITOR or VISUAL environment variable.\n"
+ exit 255
+ end
+
+ rsc = lookup_uuid_rsc arvados, uuid
+ oldobj = fetch_rsc_obj client, arvados, rsc, uuid, remaining_opts
+
+ edit_and_commit_object oldobj, uuid, global_opts do |newobj|
+ newobj.select! {|k| newobj[k] != oldobj[k]}
+ if !newobj.empty?
+ result = client.execute(:api_method => eval('arvados.' + rsc + '.update'),
+ :parameters => {"uuid" => uuid},
+ :body_object => { rsc.singularize => newobj },
+ :authenticated => false,
+ :headers => {
+ authorization: 'OAuth2 '+ENV['ARVADOS_API_TOKEN']
+ })
+ results = check_response result
+ STDERR.puts "Updated object #{results['uuid']}"
+ else
+ STDERR.puts "Object is unchanged, did not update."
+ end
+ end
+
+ exit 0
+end
+
+def arv_get client, arvados, global_opts, remaining_opts
+ uuid = remaining_opts.shift
+ if uuid.nil? or uuid == "-h" or uuid == "--help"
+ puts head_banner
+ puts "Usage: arv [--format json|yaml] get [uuid] [fields...]\n\n"
+ puts "Fetch the specified Arvados object, select the specified fields,\n"
+ puts "and print a text representation.\n"
+ exit 255
+ end
+
+ rsc = lookup_uuid_rsc arvados, uuid
+ obj = fetch_rsc_obj client, arvados, rsc, uuid, remaining_opts
+ content = get_obj_content obj, global_opts
+
+ puts content
+ exit 0
+end
+
+def arv_create client, arvados, global_opts, remaining_opts
+ types = resource_types(arvados.discovery_document)
+ create_opts = Optimist::options do
+ opt :project_uuid, "Project uuid in which to create the object", :type => :string
+ stop_on resource_types(arvados.discovery_document)
+ end
+
+ object_type = remaining_opts.shift
+ if object_type.nil?
+ abort "Missing resource type, must be one of #{types.join ', '}"
+ end
+
+ rsc = arvados.discovery_document["resources"].keys.select { |k| object_type == k.singularize }
+ if rsc.empty?
+ abort "Could not determine resource type #{object_type}"
+ end
+ rsc = rsc.first
+
+ discovered_params = arvados.discovery_document["resources"][rsc]["methods"]["create"]["parameters"]
+ method_opts = Optimist::options do
+ banner head_banner
+ banner "Usage: arv create [--project-uuid] #{object_type} [create parameters]"
+ banner ""
+ banner "This method supports the following parameters:"
+ banner ""
+ discovered_params.each do |k,v|
+ opts = Hash.new()
+ opts[:type] = v["type"].to_sym if v.include?("type")
+ if [:datetime, :text, :object, :array].index opts[:type]
+ opts[:type] = :string # else optimist bork
+ end
+ opts[:default] = v["default"] if v.include?("default")
+ opts[:default] = v["default"].to_i if opts[:type] == :integer
+ opts[:default] = to_boolean(v["default"]) if opts[:type] == :boolean
+ opts[:required] = true if v.include?("required") and v["required"]
+ description = ''
+ description = ' ' + v["description"] if v.include?("description")
+ opt k.to_sym, description, opts
+ end
+ end
+
+ initial_obj = {}
+ if create_opts[:project_uuid]
+ initial_obj["owner_uuid"] = create_opts[:project_uuid]
+ end
+
+ edit_and_commit_object initial_obj, "", global_opts do |newobj|
+ result = client.execute(:api_method => eval('arvados.' + rsc + '.create'),
+ :parameters => method_opts,
+ :body_object => {object_type => newobj},
+ :authenticated => false,
+ :headers => {
+ authorization: 'OAuth2 '+ENV['ARVADOS_API_TOKEN']
+ })
+ results = check_response result
+ puts "Created object #{results['uuid']}"
+ end
+
+ exit 0