diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..10537ae
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+/.bundle/
+/.yardoc
+/Gemfile.lock
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/
+*.sw?
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..1380895
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,4 @@
+language: ruby
+rvm:
+  - 2.1.6
+before_install: gem install bundler -v 1.11.2
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..b2674f2
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in syskit-pocolog.gemspec
+gemspec
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..142429e
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Sylvain Joyeux
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..abb7978
--- /dev/null
+++ b/README.md
@@ -0,0 +1,41 @@
+# Syskit::Pocolog
+
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/syskit/pocolog`. To experiment with that code, run `bin/console` for an interactive prompt.
+
+TODO: Delete this and the text above, and describe your gem
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'syskit-pocolog'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install syskit-pocolog
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake test` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/syskit-pocolog.
+
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
+
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..912ee38
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,10 @@
+require "bundler/gem_tasks"
+require "rake/testtask"
+
+Rake::TestTask.new(:test) do |t|
+  t.libs << "test"
+  t.libs << "lib"
+  t.test_files = FileList['test/**/*_test.rb']
+end
+
+task :default => :spec
diff --git a/lib/syskit-pocolog.rb b/lib/syskit-pocolog.rb
new file mode 100644
index 0000000..4d32bb1
--- /dev/null
+++ b/lib/syskit-pocolog.rb
@@ -0,0 +1 @@
+require 'syskit/pocolog'
diff --git a/lib/syskit/pocolog.rb b/lib/syskit/pocolog.rb
new file mode 100644
index 0000000..8e289ee
--- /dev/null
+++ b/lib/syskit/pocolog.rb
@@ -0,0 +1,9 @@
+require 'pocolog'
+require 'syskit'
+
+require 'metaruby/dsls/find_through_method_missing'
+require "syskit/pocolog/version"
+require "syskit/pocolog/streams"
+require "syskit/pocolog/task_streams"
+require "syskit/pocolog/rock_stream_matcher"
+
diff --git a/lib/syskit/pocolog/data_replay_task.rb b/lib/syskit/pocolog/data_replay_task.rb
new file mode 100644
index 0000000..9a21233
--- /dev/null
+++ b/lib/syskit/pocolog/data_replay_task.rb
@@ -0,0 +1,15 @@
+module Syskit
+    module Pocolog
+        # A single task in the replay environment
+        class DataReplayTask < Syskit::RubyTaskContext
+            # Setup a task to replay the given streams
+            #
+            # @overload for(streams)
+            #   Replay all tasks 
+            # @param [
+            def self.for(stream_mappings)
+            end
+        end
+    end
+end
+
diff --git a/lib/syskit/pocolog/rock_stream_matcher.rb b/lib/syskit/pocolog/rock_stream_matcher.rb
new file mode 100644
index 0000000..8c1cf66
--- /dev/null
+++ b/lib/syskit/pocolog/rock_stream_matcher.rb
@@ -0,0 +1,60 @@
+module Syskit
+    module Pocolog
+        # A stream matcher for Rock's standard metadata
+        #
+        # It can be used as parameter to {Streams#query}
+        #
+        # The final query is a logical AND of all the characteristics
+        class RockStreamMatcher
+            attr_reader :query
+
+            def initialize
+                @query = Hash.new
+            end
+
+            def add_regex(key, rx)
+                if existing = query[key]
+                    query[key] = Regexp.union(existing, rx)
+                else
+                    query[key] =  rx
+                end
+                self
+            end
+
+            # Match only ports
+            def ports
+                add_regex('rock_stream_type', /^port$/)
+            end
+
+            # Match only properties
+            def properties
+                add_regex('rock_stream_type', /^property$/)
+            end
+
+            # Match the object (port/property) name
+            def object_name(name)
+                add_regex('rock_task_object_name', name)
+            end
+
+            # Match the task name
+            def task_name(name)
+                add_regex('rock_task_name', name)
+            end
+
+            # Match the task model
+            def task_model(model)
+                add_regex('rock_task_model', model.orogen_model.name)
+            end
+
+            # Tests whether a stream matches this query
+            def ===(stream)
+                query.all? do |key, matcher|
+                    if metadata = stream.metadata[key]
+                        matcher === metadata
+                    end
+                end
+            end
+        end
+    end
+end
+
diff --git a/lib/syskit/pocolog/streams.rb b/lib/syskit/pocolog/streams.rb
new file mode 100644
index 0000000..dac6ed2
--- /dev/null
+++ b/lib/syskit/pocolog/streams.rb
@@ -0,0 +1,78 @@
+module Syskit
+    module Pocolog
+        # A set of log streams
+        class Streams
+            # Load the set of streams available from a directory
+            #
+            # Note that in each directory, a stream's identity (task name,
+            # port/property name and type) must be unique. If you need to mix
+            # log streams, load files in separate {Streams} objects
+            def self.from_dir(path)
+                streams = new
+                streams.add_dir(Pathname(path))
+                streams
+            end
+
+            # Load the set of streams available from a file
+            def self.from_file(file)
+                streams = new
+                streams.add_file(Pathname(file))
+                streams
+            end
+
+            # The list of streams that are available
+            attr_reader :streams
+
+            def initialize(streams = Array.new)
+                @streams = streams
+            end
+
+            def each_stream(&block)
+                streams.each(&block)
+            end
+
+            # Load all log files from a directory
+            def add_dir(path)
+                path.children.each do |file_or_dir|
+                    if file_or_dir.file? && file_or_dir.to_s =~ /\.\d+\.log$/
+                        add_file(file_or_dir)
+                    end
+                end
+            end
+
+            # Load the streams from a log file
+            def add_file(file)
+                ::Pocolog::Logfiles.open(file).streams.each do |s|
+                    add_stream(s)
+                end
+            end
+
+            # Add a new stream
+            #
+            # @param [Pocolog::DataStream] s
+            def add_stream(s)
+                streams << s
+            end
+
+            # Find all streams whose metadata match the given query
+            def find_all_streams(query)
+                streams.find_all { |s| query === s }
+            end
+
+            # Find all streams that belong to a task
+            def find_task_by_name(name)
+                streams = find_all_streams(RockStreamMatcher.new.task_name(name))
+                if !streams.empty?
+                    TaskStreams.new(streams)
+                end
+            end
+
+            # Give access to the streams per-task by calling <task_name>_task
+            def method_missing(m, *args, &block)
+                MetaRuby::DSLs.find_through_method_missing(
+                    self, m, args, 'task' => "find_task_by_name") || super
+            end
+        end
+    end
+end
+
diff --git a/lib/syskit/pocolog/task_streams.rb b/lib/syskit/pocolog/task_streams.rb
new file mode 100644
index 0000000..11f87cd
--- /dev/null
+++ b/lib/syskit/pocolog/task_streams.rb
@@ -0,0 +1,38 @@
+module Syskit
+    module Pocolog
+        # Stream accessor for streams that have already be narrowed down to a
+        # single task
+        #
+        # It is returned from the main stream pool by
+        # {Streams#find_task_by_name)
+        class TaskStreams < Streams
+            # Find a port stream that matches the given name
+            def find_port_by_name(name)
+                objects = find_all_streams(RockStreamMatcher.new.ports.object_name(name))
+                if objects.size > 1
+                    raise Ambiguous, "there are multiple ports with the name #{name}"
+                else objects.first
+                end
+            end
+
+            # Find a property stream that matches the given name
+            def find_property_by_name(name)
+                objects = find_all_streams(RockStreamMatcher.new.properties.object_name(name))
+                if objects.size > 1
+                    raise Ambiguous, "there are multiple properties with the name #{name}"
+                else objects.first
+                end
+            end
+
+            # Syskit-looking accessors for ports (_port) and properties
+            # (_property)
+            def method_missing(m, *args)
+                MetaRuby::DSLs.find_through_method_missing(
+                    self, m, args,
+                    "port" => "find_port_by_name",
+                    "property" => "find_property_by_name") || super
+            end
+        end
+    end
+end
+
diff --git a/lib/syskit/pocolog/version.rb b/lib/syskit/pocolog/version.rb
new file mode 100644
index 0000000..eacb90a
--- /dev/null
+++ b/lib/syskit/pocolog/version.rb
@@ -0,0 +1,5 @@
+module Syskit
+    module Pocolog
+        VERSION = "0.1.0"
+    end
+end
diff --git a/syskit-pocolog.gemspec b/syskit-pocolog.gemspec
new file mode 100644
index 0000000..d0b9ca0
--- /dev/null
+++ b/syskit-pocolog.gemspec
@@ -0,0 +1,27 @@
+# coding: utf-8
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'syskit/pocolog/version'
+
+Gem::Specification.new do |spec|
+  spec.name          = "syskit-pocolog"
+  spec.version       = Syskit::Pocolog::VERSION
+  spec.authors       = ["Sylvain Joyeux"]
+  spec.email         = ["sylvain.joyeux@m4x.org"]
+
+  spec.summary       = "A Syskit plugin that allows to replay log files generated by pocolog"
+  spec.description   = "Adds the APIs necessary to transform component networks to replay log files"
+  spec.homepage      = "https://github.com/rock-core/syskit-pocolog"
+  spec.license       = "MIT"
+
+  spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency 'syskit'
+  spec.add_dependency 'metaruby'
+  spec.add_development_dependency "bundler", "~> 1.11"
+  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency "minitest", "~> 5.0"
+end
diff --git a/test/syskit/pocolog/rock_stream_matcher_test.rb b/test/syskit/pocolog/rock_stream_matcher_test.rb
new file mode 100644
index 0000000..682f433
--- /dev/null
+++ b/test/syskit/pocolog/rock_stream_matcher_test.rb
@@ -0,0 +1,67 @@
+require 'test_helper'
+
+module Syskit
+    module Pocolog
+        describe RockStreamMatcher do
+            attr_reader :streams
+            before do
+                path, _ = create_log_file 'test'
+                create_log_stream 'task.port', '/double', rock_stream_type: 'port', rock_task_object_name: 'port', rock_task_name: 'task'
+                create_log_stream 'task.property', '/int', rock_stream_type: 'property', rock_task_object_name: 'property', rock_task_name: 'task'
+                create_log_stream 'stream_without_properties', '/int'
+                create_log_stream 'other_task.port', '/int', rock_task_name: 'other_task'
+                create_log_stream 'stream_with_task_model', '/int', rock_task_model: 'orogen_model::Test'
+                flush_log_file
+
+                @streams = Streams.new
+                streams.add_file path
+            end
+            subject { RockStreamMatcher.new }
+
+            def assert_finds_streams(query, *stream_names)
+                assert_equal stream_names, streams.find_all_streams(query).map(&:name)
+            end
+
+            describe "matching the stream type" do
+                it "matches against ports" do
+                    assert_finds_streams subject.ports, 'task.port'
+                end
+                it "matches against properties" do
+                    assert_finds_streams subject.properties, 'task.property'
+                end
+                it "never matches streams that do not have the property" do
+                end
+                it "ORs ports and properties if both are specified" do
+                    assert_finds_streams subject.ports.properties, 'task.port', 'task.property'
+                end
+            end
+
+            describe "matching the task name" do
+                it "matches tasks that have the name" do
+                    assert_finds_streams subject.task_name('task'), 'task.port', 'task.property'
+                end
+                it "ORs the different names" do
+                    assert_finds_streams subject.task_name("task").task_name("other_task"), 'task.port', 'task.property', 'other_task.port'
+                end
+            end
+
+            describe "matching the object name" do
+                it "matches objects that have the name" do
+                    assert_finds_streams subject.object_name('port'), 'task.port'
+                end
+                it "ORs the different names" do
+                    assert_finds_streams subject.object_name("port").object_name("property"), 'task.port', 'task.property'
+                end
+            end
+
+            describe "the task model" do
+                it "matches the task model by name" do
+                    task_m = Syskit::TaskContext.new_submodel
+                    flexmock(task_m.orogen_model, :strict, name: 'orogen_model::Test')
+                    assert_finds_streams subject.task_model(task_m), 'stream_with_task_model'
+                end
+            end
+        end
+    end
+end
+
diff --git a/test/syskit/pocolog/streams_test.rb b/test/syskit/pocolog/streams_test.rb
new file mode 100644
index 0000000..042c044
--- /dev/null
+++ b/test/syskit/pocolog/streams_test.rb
@@ -0,0 +1,111 @@
+require 'test_helper'
+
+module Syskit
+    module Pocolog
+        describe Streams do
+            subject { Streams.new }
+
+            describe "#add_file" do
+                it "adds the file's streams to the object" do
+                    logfile_path, logfile = create_log_file 'test'
+                    create_log_stream '/task.file', '/double'
+                    flush_log_file
+                    subject.add_file(logfile_path)
+                    assert_equal ['/task.file'], subject.each_stream.map(&:name)
+                end
+
+                it "raises if the file does not exist" do
+                    assert_raises(ArgumentError) { subject.add_file(Pathname('does_not_exist')) }
+                end
+            end
+
+            describe ".from_dir" do
+                it "creates a new streams object and adds the dir converted to pathname" do
+                    flexmock(Streams).new_instances.should_receive(:add_dir).once.with(Pathname.new('test'))
+                    assert_kind_of Streams, Streams.from_dir('test')
+                end
+            end
+
+            describe ".from_file" do
+                it "creates a new streams object and adds the file converted to pathname" do
+                    flexmock(Streams).new_instances.should_receive(:add_file).once.with(Pathname.new('test.0.log'))
+                    assert_kind_of Streams, Streams.from_file('test.0.log')
+                end
+            end
+
+            describe "#add_dir" do
+                it "ignores the files that do not match the .NUM.log pattern" do
+                    create_log_dir
+                    FileUtils.touch((created_log_dir + "a.file").to_s)
+                    flexmock(subject).should_receive(:add_file).never
+                    subject.add_dir(created_log_dir)
+                end
+                it "adds files that match the .NUM.log pattern" do
+                    create_log_file 'test0'
+                    create_log_file 'test1'
+                    create_log_file 'test2'
+                    flexmock(subject).should_receive(:add_file).
+                        with(created_log_dir + 'test0.0.log').once
+                    flexmock(subject).should_receive(:add_file).
+                        with(created_log_dir + 'test1.0.log').once
+                    flexmock(subject).should_receive(:add_file).
+                        with(created_log_dir + 'test2.0.log').once
+                    subject.add_dir(created_log_dir)
+                end
+            end
+
+            describe "#find_all_streams" do
+                it "returns the streams that match the object" do
+                    logfile_path, _ = create_log_file 'test'
+                    create_log_stream '/task.file', '/double'
+                    create_log_stream '/other.task.file', '/double'
+                    create_log_stream '/does.not.match', '/double'
+                    flush_log_file
+                    subject.add_dir(created_log_dir)
+
+                    streams = subject.streams
+
+                    query = flexmock
+                    query.should_receive(:===).
+                        with(->(s) { streams.include?(s) }).
+                        and_return { |s| s != streams[2] }
+                    assert_equal streams[0, 2], subject.find_all_streams(query)
+                end
+            end
+
+            describe "#find_task_by_name" do
+                before do
+                    logfile_path, _ = create_log_file 'test'
+                    create_log_stream '/test0', '/double', 'rock_task_name' => "task"
+                    create_log_stream '/test1', '/double', 'rock_task_name' => "task"
+                    create_log_stream '/does.not.match', '/double', 'rock_task_name' => 'another_task'
+                    flush_log_file
+                    subject.add_dir(created_log_dir)
+                end
+
+                it "returns nil if there are no matching tasks" do
+                    assert !subject.find_task_by_name('does_not_exist')
+                end
+
+                it "returns a TaskStreams object with the matching streams" do
+                    streams = subject.find_task_by_name('task')
+                    assert_kind_of TaskStreams, streams
+                    assert_equal Set['/test0', '/test1'], streams.each_stream.map(&:name).to_set
+                end
+
+                describe "method_missing accessor" do
+                    it "returns the streams" do
+                        streams = subject.task_task
+                        assert_kind_of TaskStreams, streams
+                        assert_equal Set['/test0', '/test1'], streams.each_stream.map(&:name).to_set
+                    end
+                    it "raises NoMethodError if no task exists" do
+                        assert_raises(NoMethodError) do
+                            subject.does_not_exist_task
+                        end
+                    end
+                end
+            end
+        end
+    end
+end
diff --git a/test/syskit/pocolog/task_streams_test.rb b/test/syskit/pocolog/task_streams_test.rb
new file mode 100644
index 0000000..868d369
--- /dev/null
+++ b/test/syskit/pocolog/task_streams_test.rb
@@ -0,0 +1,104 @@
+require 'test_helper'
+
+module Syskit
+    module Pocolog
+        describe TaskStreams do
+            attr_reader :subject
+            before do
+                create_log_file 'test'
+                create_log_stream '/port0', '/double',
+                    'rock_task_name' => "task",
+                    'rock_task_object_name' => 'object0',
+                    'rock_stream_type' => 'port'
+                create_log_stream '/port1_1', '/double',
+                    'rock_task_name' => "task",
+                    'rock_task_object_name' => 'object1',
+                    'rock_stream_type' => 'port'
+                create_log_stream '/port1_2', '/double',
+                    'rock_task_name' => "task",
+                    'rock_task_object_name' => 'object1',
+                    'rock_stream_type' => 'port'
+                create_log_stream '/property0', '/double',
+                    'rock_task_name' => "task",
+                    'rock_task_object_name' => 'object0',
+                    'rock_stream_type' => 'property'
+                create_log_stream '/property1_1', '/double',
+                    'rock_task_name' => "task",
+                    'rock_task_object_name' => 'object1',
+                    'rock_stream_type' => 'property'
+                create_log_stream '/property1_2', '/double',
+                    'rock_task_name' => "task",
+                    'rock_task_object_name' => 'object1',
+                    'rock_stream_type' => 'property'
+                flush_log_file
+                streams = Streams.from_dir(created_log_dir)
+                @subject = streams.find_task_by_name('task')
+            end
+
+            describe "#find_port_by_name" do
+                it "returns nil if there are no matches" do
+                    assert !subject.find_port_by_name('does_not_exist')
+                end
+                it "returns the matching port stream" do
+                    object = subject.find_port_by_name('object0')
+                    assert_kind_of ::Pocolog::DataStream, object
+                    assert_equal '/port0', object.name
+                end
+                it "raises Ambiguous if there are more than one port with the given name" do
+                    assert_raises(Ambiguous) do
+                        subject.find_port_by_name('object1')
+                    end
+                end
+
+                describe "access through #method_missing" do
+                    it "returns a single match if there is one" do
+                        assert_equal '/port0', subject.object0_port.name
+                    end
+                    it "raises Ambiguous for multiple matches" do
+                        assert_raises(Ambiguous) do
+                            subject.object1_port
+                        end
+                    end
+                    it "raises NoMethodError if there are no matches" do
+                        assert_raises(NoMethodError) do
+                            subject.does_not_exist_port
+                        end
+                    end
+                end
+            end
+
+            describe "#find_property_by_name" do
+                it "returns nil if there are no matches" do
+                    assert !subject.find_property_by_name('does_not_exist')
+                end
+                it "returns the matching port stream" do
+                    object = subject.find_property_by_name('object0')
+                    assert_kind_of ::Pocolog::DataStream, object
+                    assert_equal '/property0', object.name
+                end
+                it "raises Ambiguous if there are more than one port with the given name" do
+                    assert_raises(Ambiguous) do
+                        subject.find_property_by_name('object1')
+                    end
+                end
+
+                describe "access through #method_missing" do
+                    it "returns a single match if there is one" do
+                        assert_equal '/property0', subject.object0_property.name
+                    end
+                    it "raises Ambiguous for multiple matches" do
+                        assert_raises(Ambiguous) do
+                            subject.object1_property
+                        end
+                    end
+                    it "raises NoMethodError if there are no matches" do
+                        assert_raises(NoMethodError) do
+                            subject.does_not_exist_property
+                        end
+                    end
+                end
+            end
+        end
+    end
+end
+
diff --git a/test/test_helper.rb b/test/test_helper.rb
new file mode 100644
index 0000000..0550cb6
--- /dev/null
+++ b/test/test_helper.rb
@@ -0,0 +1,63 @@
+$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
+require 'syskit/test/self'
+require 'syskit/pocolog'
+require 'minitest/autorun'
+
+module Syskit
+    module Pocolog
+        module Test
+            attr_reader :created_log_dir
+            attr_reader :created_log_file
+
+            def setup
+                @pocolog_log_level = ::Pocolog.logger.level
+                ::Pocolog.logger.level = Logger::WARN
+                super
+            end
+
+            def teardown
+                if @pocolog_log_level
+                    ::Pocolog.logger.level = @pocolog_log_level
+                end
+                if created_log_dir
+                    created_log_dir.rmtree
+                end
+                super
+            end
+
+            # Create a temporary directory to be used by the other log-related
+            # helpers
+            def create_log_dir
+                @created_log_dir ||= Pathname.new(Dir.mktmpdir('syskit-pocolog-test'))
+            end
+
+            # Create a log file in a temporary directory
+            #
+            # @return [Pathname,Pocolog::Logfiles] the path to the file and the
+            #   file object
+            def create_log_file(filename, *typenames)
+                create_log_dir
+                path = created_log_dir + filename
+
+                registry = Typelib::Registry.new
+
+                @created_log_file = ::Pocolog::Logfiles.create(path.to_s, registry)
+                return path.sub_ext(".0.log"), created_log_file
+            end
+
+            # Write all pending changes done to {#created_log_file} on disk
+            def flush_log_file
+                created_log_file.io.each(&:flush)
+            end
+
+            # Create a log stream on the last file created with
+            # {#create_log_file}
+            def create_log_stream(name, typename, metadata = Hash.new)
+                registry = Typelib::Registry.new
+                type = registry.create_null typename
+                created_log_file.create_stream name, type, metadata
+            end
+        end
+    end
+end
+Minitest::Test.include Syskit::Pocolog::Test