Merge topic 'ExternalProject-retry-only-recoverable'

116b06870d ExternalProject: add INACTIVITY_TIMEOUT argument
f24e34975a ExternalProject: retry download on recoverable errors

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5034

Tests/RunCMake/ExternalProject/DownloadInactivityResume.cmake

@@ -0,0 +1,5 @@
+include(ExternalProject)
+ExternalProject_Add(MyProj URL ${SERVER_URL} INACTIVITY_TIMEOUT 2 DOWNLOAD_NO_EXTRACT TRUE
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND ""
+  INSTALL_COMMAND "")

Tests/RunCMake/ExternalProject/DownloadInactivityTimeout-build-result.txt

@@ -0,0 +1 @@
+[^0]

Tests/RunCMake/ExternalProject/DownloadInactivityTimeout-build-stdout.txt

@@ -0,0 +1 @@
+(Timeout was reached)?

Tests/RunCMake/ExternalProject/DownloadInactivityTimeout.cmake

@@ -0,0 +1,5 @@
+include(ExternalProject)
+ExternalProject_Add(MyProj URL ${SERVER_URL} INACTIVITY_TIMEOUT 2 DOWNLOAD_NO_EXTRACT TRUE
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND ""
+  INSTALL_COMMAND "")

Tests/RunCMake/ExternalProject/DownloadServer.py

@@ -0,0 +1,42 @@
+from http.server import HTTPServer, BaseHTTPRequestHandler
+import argparse
+import time
+import subprocess
+import sys
+import os
+args = None
+outerthread = None
+
+class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        self.send_response(200)
+        self.end_headers()
+        data = b'D'
+
+        if args.speed_limit:
+            slow_deadline = time.time()+args.limit_duration
+
+            while time.time() < slow_deadline:
+                self.wfile.write(data)
+                if args.speed_limit:
+                    time.sleep(1.1)
+
+        data = data * 100
+        self.wfile.write(data)
+        self.close_connection = True
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--speed_limit', help='transfer rate limitation', action='store_true',default=False)
+    parser.add_argument('--limit_duration', help='duration of the transfer rate limitation',default=1, type=float)
+    parser.add_argument('--file', help='file to write the url to connect to')
+    parser.add_argument('--subprocess', action='store_true')
+    args = parser.parse_args()
+    if not args.subprocess:
+        subprocess.Popen([sys.executable]+sys.argv+['--subprocess'],stdin=subprocess.DEVNULL, stderr=subprocess.DEVNULL,stdout=subprocess.DEVNULL)
+    else:
+        httpd = HTTPServer(('localhost', 0), SimpleHTTPRequestHandler)
+        with open(args.file,"w") as f:
+            f.write('http://localhost:{}/test'.format(httpd.socket.getsockname()[1]))
+        httpd.handle_request()
+        os.remove(args.file)

Tests/RunCMake/ExternalProject/DownloadTimeout-build-result.txt

@@ -0,0 +1 @@
+^[^0]

Tests/RunCMake/ExternalProject/DownloadTimeout-build-stderr.txt

@@ -0,0 +1 @@
+.*

Tests/RunCMake/ExternalProject/DownloadTimeout.cmake

@@ -0,0 +1,5 @@
+include(ExternalProject)
+set(source_dir "${CMAKE_CURRENT_BINARY_DIR}/DownloadTimeout")
+file(REMOVE_RECURSE "${source_dir}")
+file(MAKE_DIRECTORY "${source_dir}")
+ExternalProject_Add(MyProj URL "http://cmake.org/invalid_file.tar.gz")

Tests/RunCMake/ExternalProject/RunCMakeTest.cmake

@@ -1,5 +1,11 @@
+cmake_minimum_required(VERSION 3.12)
 include(RunCMake)
 
+# We do not contact any remote URLs, but may use a local one.
+# Remove any proxy configuration that may change behavior.
+unset(ENV{http_proxy})
+unset(ENV{https_proxy})
+
 run_cmake(IncludeScope-Add)
 run_cmake(IncludeScope-Add_Step)
 run_cmake(NoOptions)
@@ -27,6 +33,50 @@ function(__ep_test_with_build testName)
   run_cmake_command(${testName}-build ${CMAKE_COMMAND} --build .)
 endfunction()
 
+find_package(Python3)
+function(__ep_test_with_build_with_server testName)
+  if(NOT Python3_EXECUTABLE)
+    return()
+  endif()
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${testName}-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  set(RunCMake_TEST_TIMEOUT 20)
+  set(RunCMake_TEST_OUTPUT_MERGE TRUE)
+  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+  set(URL_FILE ${RunCMake_BINARY_DIR}/${testName}.url)
+  if(EXISTS "${URL_FILE}")
+    file(REMOVE "${URL_FILE}")
+  endif()
+  execute_process(
+    COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/DownloadServer.py --file "${URL_FILE}" ${ARGN}
+    OUTPUT_FILE ${RunCMake_BINARY_DIR}/${testName}-python.txt
+    ERROR_FILE ${RunCMake_BINARY_DIR}/${testName}-python.txt
+    RESULT_VARIABLE result
+    TIMEOUT 30
+    )
+  if(NOT result EQUAL 0)
+    message(FATAL_ERROR "Failed to start download server:\n  ${result}")
+  endif()
+
+  foreach(i RANGE 1 8)
+    if(EXISTS ${URL_FILE})
+      break()
+    endif()
+    execute_process(COMMAND ${CMAKE_COMMAND} -E sleep ${i})
+  endforeach()
+
+  if(NOT EXISTS ${URL_FILE})
+    message(FATAL_ERROR "Failed to load download server URL from:\n  ${URL_FILE}")
+  endif()
+
+  file(READ ${URL_FILE} SERVER_URL)
+  message(STATUS "URL : ${URL_FILE} - ${SERVER_URL}")
+  run_cmake_with_options(${testName} ${CMAKE_COMMAND} -DSERVER_URL=${SERVER_URL} )
+  run_cmake_command(${testName}-clean ${CMAKE_COMMAND} --build . --target clean)
+  run_cmake_command(${testName}-build ${CMAKE_COMMAND} --build .)
+endfunction()
+
 __ep_test_with_build(MultiCommand)
 
 set(RunCMake_TEST_OUTPUT_MERGE 1)
@@ -38,6 +88,9 @@ set(RunCMake_TEST_OUTPUT_MERGE 0)
 if(NOT RunCMake_GENERATOR MATCHES "Visual Studio")
   __ep_test_with_build(LogOutputOnFailure)
   __ep_test_with_build(LogOutputOnFailureMerged)
+  __ep_test_with_build(DownloadTimeout)
+  __ep_test_with_build_with_server(DownloadInactivityTimeout --speed_limit --limit_duration 40)
+  __ep_test_with_build_with_server(DownloadInactivityResume --speed_limit --limit_duration 1)
 endif()
 
 # We can't test the substitution when using the old MSYS due to