🧑‍🌾 Tests failing due to model download errors from server

[Crola1702]

Environment

• OS Version: All (Ubuntu, Windows, MacOS)
• Source build, all versions

Description

• Expected behavior: Tests should pass
• Actual behavior: Some tests are failing due to fuel server error

Steps to reproduce

1. Run a build in any of fuel_tools jobs
2. See tests failing and the log output showing 500 response codes when downloading some models

Output

Reference builds:

• https://build.osrfoundation.org/job/ign_fuel-tools-gz-8-win/41/
• https://build.osrfoundation.org/job/ignition_fuel-tools-ci-ign-fuel-tools4-homebrew-amd64/88/

The output before the test fails is normally the following one:

[Err] [FuelClient.cc:630] Failed to download model.
  Server: <server>
  Route: <model>
  REST response code: 504 <503 in some cases>

Models that fail to download:

• https://fuel.gazebosim.org/openroboticstest/models/hatchback_red_1/tip/hatchback_red_1.zip
• https://fuel.gazebosim.org/openroboticstest/models/test box/tip/test box.zip
• https://fuel.gazebosim.org/chapulina/models/test box/tip/test box.zip
• https://fuel.gazebosim.org/openroboticstest/models/rescue randy/tip/rescue randy.zip
• https://fuel.gazebosim.org/openrobotics/models/hatchback red/tip/hatchback red.zip
• https://fuel.gazebosim.org/openroboticstest/models/teambase/tip/teambase.zip
• https://fuel.gazebosim.org/openroboticstest/models/backpack/tip/backpack.zip
• https://fuel.gazebosim.org/openroboticstest/worlds/test world2/tip/test world2.zip
• https://fuel.gazebosim.org/openroboticstest/worlds/test world2/tip/test world2.zip (503)
• https://fuel.gazebosim.org/openroboticstest/worlds/test world/tip/test world.zip (503)
• https://fuel.gazebosim.org/openrobotics/models/bus/1/bus.zip
• https://fuel.ignitionrobotics.org/openroboticstest/models/test box/tip/test box.zip
• https://fuel.ignitionrobotics.org/openroboticstest/models/rescue randy/tip/rescue randy.zip
• https://fuel.ignitionrobotics.org/openroboticstest/models/hatchback_red_1/tip/hatchback_red_1.zip
• https://fuel.ignitionrobotics.org/openrobotics/models/hatchback red/tip/hatchback red.zip

Tests:

• UNIT_FuelClient_TEST.test_ran
• UNIT_gz_src_TEST.test_ran
• UNIT_Interface_TEST
• UNIT_LocalCache_TEST
• Interface.FetchResources
• FuelClientTest.CachedWorld
• FuelClientTest.PatchModelFail
• FuelClientTest/FuelClientDownloadTest.DownloadModel/0, where GetParam() = "fuel.gazebosim.org"
• FuelClientTest/FuelClientDownloadTest.DownloadModel/1, where GetParam() = "fuel.ignitionrobotics.org"
• CmdLine.ModelDownloadUnversioned
• CmdLine.DownloadConfigCache
• CollectionTest/DownloadCollectionTest.AllItems/0, where GetParam() = 1
• CollectionTest/DownloadCollectionTest.AllItems/1, where GetParam() = 2
• CollectionTest/DownloadCollectionTest.AllItems/2, where GetParam() = 16
• CollectionTest/DownloadCollectionTest.Worlds/0, where GetParam() = 1
• CollectionTest/DownloadCollectionTest.Worlds/1, where GetParam() = 2

[Crola1702]

This issue is not happening anymore