def _test_render(
self,
render_fn,
arrow_table_dict={},
arrow_table=None,
params={},
tab=Tab("tab-1", "Tab 1"),
fetch_result=None,
output_filename=None,
):
with ExitStack() as ctx:
if arrow_table is None:
arrow_table = ctx.enter_context(
arrow_table_context(arrow_table_dict, dir=self.basedir))
ctx.enter_context(patch.object(module, "render", render_fn))
out_filename = ctx.enter_context(
tempfile_context(dir=self.basedir)).name
thrift_result = module.render_thrift(
ttypes.RenderRequest(
str(self.basedir),
arrow_arrow_table_to_thrift(arrow_table),
arrow_params_to_thrift(Params(params)),
arrow_tab_to_thrift(tab),
arrow_fetch_result_to_thrift(fetch_result)
if fetch_result is not None else None,
out_filename,
))
return thrift_render_result_to_arrow(thrift_result, self.basedir)
def render(
self,
compiled_module: CompiledModule,
chroot_context: ChrootContext,
basedir: Path,
input_table: ArrowTable,
params: Params,
tab: Tab,
fetch_result: Optional[FetchResult],
output_filename: str,
) -> RenderResult:
"""Run the module's `render_thrift()` function and return its result.
Raise ModuleError if the module has a bug.
"""
chroot_dir = chroot_context.chroot.root
basedir_seen_by_module = Path("/") / basedir.relative_to(chroot_dir)
request = ttypes.RenderRequest(
str(basedir_seen_by_module),
arrow_arrow_table_to_thrift(input_table),
arrow_params_to_thrift(params),
arrow_tab_to_thrift(tab),
(None if fetch_result is None else
arrow_fetch_result_to_thrift(fetch_result)),
output_filename,
)
try:
with chroot_context.writable_file(basedir / output_filename):
result = self._run_in_child(
chroot_dir=chroot_dir,
network_config=pyspawner.NetworkConfig(
), # TODO disallow networking
compiled_module=compiled_module,
timeout=self.render_timeout,
result=ttypes.RenderResult(),
function="render_thrift",
args=[request],
)
finally:
chroot_context.clear_unowned_edits()
if result.table.filename and result.table.filename != output_filename:
raise ModuleExitedError(compiled_module.module_slug, 0,
"Module wrote to wrong output file")
try:
# thrift_render_result_to_arrow() verifies all filenames passed by
# the module are in the directory the module has access to. It
# assumes the Arrow file (if there is one) is untrusted, so it can
# raise ValidateError
render_result = thrift_render_result_to_arrow(result, basedir)
except ValidateError as err:
raise ModuleExitedError(
compiled_module.module_slug,
0,
"Module produced invalid data: %s" % str(err),
)
return render_result
def test_tab_to_thrift(self):
self.assertEqual(
types.arrow_tab_to_thrift(types.Tab("tab-123", "Tab 1")),
ttypes.Tab("tab-123", "Tab 1"),
)
