[21886] Feature: Windows ci example testing

.github/workflows/reusable-windows-ci.yml

@@ -30,7 +30,7 @@ defaults:
 
 jobs:
   reusable-windows-ci:
-    runs-on: windows-2019
+    runs-on: windows-2022
     strategy:
       fail-fast: false
       matrix:
@@ -141,7 +141,7 @@ jobs:
           colcon_build_args: ${{ inputs.colcon-args }}
           # The following Fast DDS CMake options need to be specified here instead of in the meta files
           # because they vary from platform to platform
-          cmake_args_default: ${{ inputs.cmake-args }} -T ${{ matrix.vs-toolset }} -DTHIRDPARTY_Asio=FORCE -DTHIRDPARTY_TinyXML2=FORCE -DTHIRDPARTY_fastcdr=OFF -DTHIRDPARTY_UPDATE=ON -DEPROSIMA_EXTRA_CMAKE_CXX_FLAGS="/MP /WX"
+          cmake_args_default: ${{ inputs.cmake-args }} -T ${{ matrix.vs-toolset }} -DTHIRDPARTY_Asio=FORCE -DTHIRDPARTY_TinyXML2=FORCE -DTHIRDPARTY_fastcdr=OFF -DTHIRDPARTY_UPDATE=ON -DFASTDDS_EXAMPLE_TESTS=ON -DEPROSIMA_EXTRA_CMAKE_CXX_FLAGS="/MP /WX"
           cmake_build_type: ${{ matrix.cmake-config }}
           workspace: ${{ github.workspace }}
 

examples/cpp/hello_world/CLIParser.hpp

@@ -46,6 +46,7 @@ class CLIParser
     struct publisher_config
     {
         uint16_t samples = 0;
+        uint16_t matched = 1;
     };
 
     //! Subscriber application configuration structure
@@ -83,6 +84,9 @@ class CLIParser
         std::cout << "  -s <num>, --samples <num>       Number of samples to send or receive"   << std::endl;
         std::cout << "                                  [0 <= <num> <= 65535]"                  << std::endl;
         std::cout << "                                  (Default: 0 [unlimited])"               << std::endl;
+        std::cout << "Publisher options:"                                                       << std::endl;
+        std::cout << "  -m, --matched                   Number of participants to discover"     << std::endl;
+        std::cout << "                                  before start publishing (Default: 1)"   << std::endl;
         std::cout << "Subscriber options:"                                                      << std::endl;
         std::cout << "  -w, --waitset                   Use waitset & read condition"           << std::endl;
         std::exit(return_code);
@@ -194,6 +198,40 @@ class CLIParser
                     print_help(EXIT_FAILURE);
                 }
             }
+            else if (arg == "-m" || arg == "--matched")
+            {
+                try
+                {
+                    int input = std::stoi(argv[++i]);
+                    if (input < std::numeric_limits<std::uint16_t>::min() ||
+                            input > std::numeric_limits<std::uint16_t>::max())
+                    {
+                        throw std::out_of_range("matched argument out of range");
+                    }
+                    else
+                    {
+                        if (config.entity == CLIParser::EntityKind::PUBLISHER)
+                        {
+                            config.pub_config.matched = static_cast<uint16_t>(input);
+                        }
+                        else
+                        {
+                            EPROSIMA_LOG_ERROR(CLI_PARSER, "matched can only be used with the publisher entity");
+                            print_help(EXIT_FAILURE);
+                        }
+                    }
+                }
+                catch (const std::invalid_argument& e)
+                {
+                    EPROSIMA_LOG_ERROR(CLI_PARSER, "invalid sample argument for " + arg + ": " + e.what());
+                    print_help(EXIT_FAILURE);
+                }
+                catch (const std::out_of_range& e)
+                {
+                    EPROSIMA_LOG_ERROR(CLI_PARSER, "sample argument out of range for " + arg + ": " + e.what());
+                    print_help(EXIT_FAILURE);
+                }
+            }
             else
             {
                 EPROSIMA_LOG_ERROR(CLI_PARSER, "unknown option " + arg);

examples/cpp/hello_world/PublisherApp.cpp

@@ -47,6 +47,7 @@ PublisherApp::PublisherApp(
     , type_(new HelloWorldPubSubType())
     , matched_(0)
     , samples_(config.samples)
+    , expected_matches_(config.matched)
     , stop_(false)
 {
     // Set up the data type with initial values
@@ -152,7 +153,7 @@ bool PublisherApp::publish()
     cv_.wait(matched_lock, [&]()
             {
                 // at least one has been discovered
-                return ((matched_ > 0) || is_stopped());
+                return ((matched_ >= expected_matches_) || is_stopped());
             });
 
     if (!is_stopped())

examples/cpp/hello_world/PublisherApp.hpp

@@ -82,6 +82,8 @@ class PublisherApp : public Application, public DataWriterListener
 
     uint16_t samples_;
 
+    uint16_t expected_matches_;
+
     std::mutex mutex_;
 
     std::condition_variable cv_;

test/examples/CMakeLists.txt

@@ -28,6 +28,13 @@ set(SHELL_EXECUTABLE "")
 set(TINYXML2_LIB_DIR_COMPOSE_VOLUME "")
 set(TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH "")
 
+# Configure TinyXML2 library path if installed in user library path
+if(NOT (TINYXML2_FROM_SOURCE OR TINYXML2_FROM_THIRDPARTY))
+    get_filename_component(TINYXML2_LIB_DIR ${TINYXML2_LIBRARY} DIRECTORY)
+    set(TINYXML2_LIB_DIR_COMPOSE_VOLUME "- ${TINYXML2_LIB_DIR}:${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}/fastdds:ro")
+    set(TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH ":${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}/fastdds")
+endif()
+
 # Linux configurations
 if(UNIX AND NOT(APPLE) AND NOT(QNXNTO) AND NOT(ANDROID))
     # Find bash
@@ -39,6 +46,21 @@ if(UNIX AND NOT(APPLE) AND NOT(QNXNTO) AND NOT(ANDROID))
     set(SHELL_EXECUTABLE ${BASH_EXECUTABLE})
     set(DOCKER_IMAGE_NAME "ubuntu:22.04")
 
+    set(PROJECT_BINARY_DIR_COMPOSE_VOLUME "${PROJECT_BINARY_DIR}:${PROJECT_BINARY_DIR}")
+    set(fastcdr_LIB_DIR_COMPOSE_VOLUME "${fastcdr_LIB_DIR}:${fastcdr_LIB_DIR}")
+    set(CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME "${CMAKE_INSTALL_PREFIX}:${CMAKE_INSTALL_PREFIX}")
+
+    set(PATH_ENVIRONMENT_VARIABLE_COMPOSE "LD_LIBRARY_PATH: ${PROJECT_BINARY_DIR}/src/cpp:${fastcdr_LIB_DIR}")
+    if (TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH)
+        set(PATH_ENVIRONMENT_VARIABLE_COMPOSE "${PATH_ENVIRONMENT_VARIABLE_COMPOSE}${TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH}")
+    endif()
+    set(EXAMPLE_PREFIX_DIR_COMPOSE "${PROJECT_BINARY_DIR}/examples/cpp")
+    set(EXAMPLE_SUFFIX_DIR_COMPOSE "")
+    set(FASTDDS_DEFAULT_PROFILES_FILE_PREFIX_COMPOSE "${PROJECT_BINARY_DIR}/examples/cpp")
+    set(COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE "$\${EXAMPLE_DIR}")
+    set(COMMAND_CONCATENATE_COMPOSE "&")
+    set(COMMAND_BACKGROUND_JOB_COMPOSE "")
+
 # Windows configurations
 elseif(WIN32)
     # Find pwsh
@@ -47,27 +69,60 @@ elseif(WIN32)
         message(FATAL_ERROR "pwsh not found")
     endif()
 
-    set(PWSH_EXECUTABLE ${BASH_EXECUTABLE})
+    set(PWSH_VERSION_DOCKER "latest")
+    set(SHELL_EXECUTABLE "C:/\"Program Files\"/PowerShell/${PWSH_VERSION_DOCKER}/pwsh.exe")
+
     set(FILE_EXTENSION ".exe")
+    set(DOCKER_IMAGE_NAME "windows-testing")
 
-    # We don't know which docker image to use for Windows yet
-    message(FATAL_ERROR "Windows not supported yet")
+    cmake_path(GET fastcdr_LIB_DIR PARENT_PATH fastcdr_INSTALL_DIR)
 
+    # Ensure drives inside docker are mounted in C: drive
+    string(REGEX REPLACE ".:" "C:" CMAKE_INSTALL_PREFIX_C ${CMAKE_INSTALL_PREFIX})
+    string(REGEX REPLACE ".:" "C:" PROJECT_BINARY_DIR_C ${PROJECT_BINARY_DIR})
+    string(REGEX REPLACE ".:" "C:" fastcdr_INSTALL_DIR_C ${fastcdr_INSTALL_DIR})
+
+    set(PROJECT_BINARY_DIR_COMPOSE_VOLUME "${PROJECT_BINARY_DIR}:${PROJECT_BINARY_DIR_C}")
+    set(fastcdr_LIB_DIR_COMPOSE_VOLUME "${fastcdr_INSTALL_DIR}/bin:${fastcdr_INSTALL_DIR_C}/bin")
+    set(CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME "${CMAKE_INSTALL_PREFIX}/bin:${CMAKE_INSTALL_PREFIX_C}/bin")
+
+    set(PATH_ENVIRONMENT_VARIABLE_COMPOSE "PATH: C:/Program Files/OpenSSL-Win64;${CMAKE_INSTALL_PREFIX_C}/bin;${fastcdr_INSTALL_DIR_C}/bin;C:/Windows/System32;C:/Windows/System32/downlevel;")
+    set(EXAMPLE_PREFIX_DIR_COMPOSE "${PROJECT_BINARY_DIR_C}/examples/cpp")
+    if (CMAKE_BUILD_TYPE)
+        set(EXAMPLE_SUFFIX_DIR_COMPOSE "${CMAKE_BUILD_TYPE}")
+    else()
+        set(EXAMPLE_SUFFIX_DIR_COMPOSE "Release")
+    endif()
+    set(FASTDDS_DEFAULT_PROFILES_FILE_PREFIX_COMPOSE "${PROJECT_BINARY_DIR_C}/examples/cpp")
+    set(COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE "& $\$Env:EXAMPLE_DIR")
+    set(COMMAND_CONCATENATE_COMPOSE "&\" \"")
+    set(COMMAND_BACKGROUND_JOB_COMPOSE "; Receive-Job 1 -Wait")
+
+    set(WIN_DOCKERFILE ${CMAKE_CURRENT_LIST_DIR}/windows/Dockerfile)
+    # Generate image for testing
+    add_custom_target(
+        windows_docker_image_testing_generation
+        ALL
+        # Launch the docker build command using the build context.
+        COMMAND ${DOCKER_EXECUTABLE} build
+            --tag ${DOCKER_IMAGE_NAME}
+            --file ${WIN_DOCKERFILE}
+            ${CMAKE_CURRENT_LIST_DIR}
+        COMMENT "Creating windows image for testing..." VERBATIM
+        WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR})
 # Unsupported platform
 else()
     message(FATAL_ERROR "Unsupported platform")
 endif()
 
-# Configure TinyXML2 library path if installed in user library path
-if(NOT (TINYXML2_FROM_SOURCE OR TINYXML2_FROM_THIRDPARTY))
-    get_filename_component(TINYXML2_LIB_DIR ${TINYXML2_LIBRARY} DIRECTORY)
-    set(TINYXML2_LIB_DIR_COMPOSE_VOLUME "- ${TINYXML2_LIB_DIR}:${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}/fastdds:ro")
-    set(TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH ":${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}/fastdds")
+if(WIN32)
+    # Temporarily, test hello world
+    file(GLOB examples_python_tests RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*world.py)
+else()
+    # Find all pytest files for testing
+    file(GLOB examples_python_tests RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*.py)
 endif()
 
-# Find all pytest files for testing
-file(GLOB examples_python_tests RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*.py)
-
 # Add security test only if security is enabled
 if (NOT SECURITY)
     list(FILTER examples_python_tests EXCLUDE REGEX "security")

test/examples/configuration.compose.yml

@@ -11,34 +11,33 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-version: "3"
 
 services:
   subscriber:
     image: @DOCKER_IMAGE_NAME@
     volumes:
-      - @PROJECT_BINARY_DIR@:@PROJECT_BINARY_DIR@
-      - @fastcdr_LIB_DIR@:@fastcdr_LIB_DIR@
+      - @PROJECT_BINARY_DIR_COMPOSE_VOLUME@
+      - @fastcdr_LIB_DIR_COMPOSE_VOLUME@
+      - @CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME@
       @TINYXML2_LIB_DIR_COMPOSE_VOLUME@
     environment:
-      # TODO(eduponz): LD_LIBRARY_PATH is not the correct variable for Windows
-      LD_LIBRARY_PATH: @PROJECT_BINARY_DIR@/src/cpp:@fastcdr_LIB_DIR@@TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH@
-      EXAMPLE_DIR: @PROJECT_BINARY_DIR@/examples/cpp/configuration
-      FASTDDS_DEFAULT_PROFILES_FILE: @PROJECT_BINARY_DIR@/examples/cpp/configuration/configuration_profile.xml
+      @PATH_ENVIRONMENT_VARIABLE_COMPOSE@
+      EXAMPLE_DIR: @EXAMPLE_PREFIX_DIR_COMPOSE@/configuration/@EXAMPLE_SUFFIX_DIR_COMPOSE@
+      FASTDDS_DEFAULT_PROFILES_FILE: @FASTDDS_DEFAULT_PROFILES_FILE_PREFIX_COMPOSE@/configuration/configuration_profile.xml
       SUBSCRIBER_ADDITIONAL_ARGUMENTS: ${SUB_ARGS}
-    command: @SHELL_EXECUTABLE@ -c "$${EXAMPLE_DIR}/configuration@FILE_EXTENSION@ subscriber --samples 10 $${SUBSCRIBER_ADDITIONAL_ARGUMENTS}"
+    command: @SHELL_EXECUTABLE@ -c "@COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE@/configuration@FILE_EXTENSION@ subscriber --samples 10 $${SUBSCRIBER_ADDITIONAL_ARGUMENTS}"
 
   publisher-subscriber:
     image: @DOCKER_IMAGE_NAME@
     volumes:
-      - @PROJECT_BINARY_DIR@:@PROJECT_BINARY_DIR@
-      - @fastcdr_LIB_DIR@:@fastcdr_LIB_DIR@
+      - @PROJECT_BINARY_DIR_COMPOSE_VOLUME@
+      - @fastcdr_LIB_DIR_COMPOSE_VOLUME@
+      - @CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME@
       @TINYXML2_LIB_DIR_COMPOSE_VOLUME@
     environment:
-      # TODO(eduponz): LD_LIBRARY_PATH is not the correct variable for Windows
-      LD_LIBRARY_PATH: @PROJECT_BINARY_DIR@/src/cpp:@fastcdr_LIB_DIR@@TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH@
-      EXAMPLE_DIR: @PROJECT_BINARY_DIR@/examples/cpp/configuration
-      FASTDDS_DEFAULT_PROFILES_FILE: @PROJECT_BINARY_DIR@/examples/cpp/configuration/configuration_profile.xml
+      @PATH_ENVIRONMENT_VARIABLE_COMPOSE@
+      EXAMPLE_DIR: @EXAMPLE_PREFIX_DIR_COMPOSE@/configuration/@EXAMPLE_SUFFIX_DIR_COMPOSE@
+      FASTDDS_DEFAULT_PROFILES_FILE: @FASTDDS_DEFAULT_PROFILES_FILE_PREFIX_COMPOSE@/configuration/configuration_profile.xml
       PUBLISHER_ADDITIONAL_ARGUMENTS: ${PUB_ARGS}
       SUBSCRIBER_ADDITIONAL_ARGUMENTS: ${SUB_ARGS}
-    command: @SHELL_EXECUTABLE@ -c "$${EXAMPLE_DIR}/configuration@FILE_EXTENSION@ subscriber --samples 10 $${SUBSCRIBER_ADDITIONAL_ARGUMENTS} & $${EXAMPLE_DIR}/configuration@FILE_EXTENSION@ publisher --samples 10 --wait 2 $${PUBLISHER_ADDITIONAL_ARGUMENTS}"
+    command: @SHELL_EXECUTABLE@ -c "@COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE@/configuration@FILE_EXTENSION@ subscriber --samples 10 $${SUBSCRIBER_ADDITIONAL_ARGUMENTS} @COMMAND_CONCATENATE_COMPOSE@ @COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE@/configuration@FILE_EXTENSION@ publisher --samples 10 --wait 2 $${PUBLISHER_ADDITIONAL_ARGUMENTS}@COMMAND_BACKGROUND_JOB_COMPOSE@"

test/examples/content_filter.compose.yml

@@ -11,18 +11,17 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-version: "3"
 
 services:
   subscriber:
     image: @DOCKER_IMAGE_NAME@
     volumes:
-      - @PROJECT_BINARY_DIR@:@PROJECT_BINARY_DIR@
-      - @fastcdr_LIB_DIR@:@fastcdr_LIB_DIR@
+      - @PROJECT_BINARY_DIR_COMPOSE_VOLUME@
+      - @fastcdr_LIB_DIR_COMPOSE_VOLUME@
+      - @CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME@
       @TINYXML2_LIB_DIR_COMPOSE_VOLUME@
     environment:
-      # TODO(eduponz): LD_LIBRARY_PATH is not the correct variable for Windows
-      LD_LIBRARY_PATH: @PROJECT_BINARY_DIR@/src/cpp:@fastcdr_LIB_DIR@@TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH@
-      EXAMPLE_DIR: @PROJECT_BINARY_DIR@/examples/cpp/content_filter@FILE_EXTENSION@
+      @PATH_ENVIRONMENT_VARIABLE_COMPOSE@
+      EXAMPLE_DIR: @EXAMPLE_PREFIX_DIR_COMPOSE@/content_filter/@EXAMPLE_SUFFIX_DIR_COMPOSE@
       SUBSCRIBER_ADDITIONAL_ARGUMENTS: ${SUB_ARGS}
-    command: @SHELL_EXECUTABLE@ -c "$${EXAMPLE_DIR}/content_filter@FILE_EXTENSION@ subscriber $${SUBSCRIBER_ADDITIONAL_ARGUMENTS} --lower-bound 4 --upper-bound 8 --reliable --transient-local & $${EXAMPLE_DIR}/content_filter@FILE_EXTENSION@ publisher --samples 15 --interval 100 --reliable --transient-local"
+    command: @SHELL_EXECUTABLE@ -c "@COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE@/content_filter@FILE_EXTENSION@ subscriber $${SUBSCRIBER_ADDITIONAL_ARGUMENTS} --lower-bound 4 --upper-bound 8 --reliable --transient-local @COMMAND_CONCATENATE_COMPOSE@ @COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE@/content_filter@FILE_EXTENSION@ publisher --samples 15 --interval 100 --reliable --transient-local@COMMAND_BACKGROUND_JOB_COMPOSE@"

test/examples/custom_payload_pool.compose.yml

@@ -11,31 +11,30 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-version: "3"
 
 services:
   subscriber:
     image: @DOCKER_IMAGE_NAME@
     volumes:
-      - @PROJECT_BINARY_DIR@:@PROJECT_BINARY_DIR@
-      - @fastcdr_LIB_DIR@:@fastcdr_LIB_DIR@
+      - @PROJECT_BINARY_DIR_COMPOSE_VOLUME@
+      - @fastcdr_LIB_DIR_COMPOSE_VOLUME@
+      - @CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME@
       @TINYXML2_LIB_DIR_COMPOSE_VOLUME@
     environment:
-      # TODO(eduponz): LD_LIBRARY_PATH is not the correct variable for Windows
-      LD_LIBRARY_PATH: @PROJECT_BINARY_DIR@/src/cpp:@fastcdr_LIB_DIR@@TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH@
-      EXAMPLE_DIR: @PROJECT_BINARY_DIR@/examples/cpp/custom_payload_pool
+      @PATH_ENVIRONMENT_VARIABLE_COMPOSE@
+      EXAMPLE_DIR: @EXAMPLE_PREFIX_DIR_COMPOSE@/custom_payload_pool/@EXAMPLE_SUFFIX_DIR_COMPOSE@
     command: @SHELL_EXECUTABLE@ -c "$${EXAMPLE_DIR}/custom_payload_pool@FILE_EXTENSION@ subscriber --samples 10"
 
   publisher:
     image: @DOCKER_IMAGE_NAME@
     volumes:
-      - @PROJECT_BINARY_DIR@:@PROJECT_BINARY_DIR@
-      - @fastcdr_LIB_DIR@:@fastcdr_LIB_DIR@
+      - @PROJECT_BINARY_DIR_COMPOSE_VOLUME@
+      - @fastcdr_LIB_DIR_COMPOSE_VOLUME@
+      - @CMAKE_INSTALL_PREFIX_COMPOSE_VOLUME@
       @TINYXML2_LIB_DIR_COMPOSE_VOLUME@
     environment:
-      # TODO(eduponz): LD_LIBRARY_PATH is not the correct variable for Windows
-      LD_LIBRARY_PATH: @PROJECT_BINARY_DIR@/src/cpp:@fastcdr_LIB_DIR@@TINYXML2_LIB_DIR_COMPOSE_LD_LIBRARY_PATH@
-      EXAMPLE_DIR: @PROJECT_BINARY_DIR@/examples/cpp/custom_payload_pool
-    command: @SHELL_EXECUTABLE@ -c "$${EXAMPLE_DIR}/custom_payload_pool@FILE_EXTENSION@ publisher --samples 10"
+      @PATH_ENVIRONMENT_VARIABLE_COMPOSE@
+      EXAMPLE_DIR: @EXAMPLE_PREFIX_DIR_COMPOSE@/custom_payload_pool/@EXAMPLE_SUFFIX_DIR_COMPOSE@
+    command: @SHELL_EXECUTABLE@ -c "@COMMAND_EXAMPLE_DIR_PREFIX_COMPOSE@/custom_payload_pool@FILE_EXTENSION@ publisher --samples 10"
     depends_on:
       - subscriber