Merge branch 'google3'

this is a merge commit based on a work done here:

https://team-review.git.corp.google.com/c/nearby-eng/nearby/+/761959

the difference with the former is: this one is tracking both heads of a merge

Change-Id: I8b28b1d3a5280581f20e4edf9144641a12df8879

cpp/platform/impl/g3/BUILD

@@ -15,6 +15,7 @@ cc_library(
         "//platform:types",
         "//platform/api",
         "//platform/impl/shared:atomic_boolean",
+        "//platform/impl/shared:file",
         "//platform/impl/shared:posix_condition_variable",
         "//platform/impl/shared:posix_lock",
         "//platform/port:string",

cpp/platform/impl/g3/CMakeLists.txt

@@ -18,6 +18,7 @@ target_link_libraries(platform_impl_g3
     "platform_types"
     "platform_api"
     "platform_impl_shared_atomic_boolean"
+    "platform_impl_shared_file"
     "platform_impl_shared_posix_condition_variable"
     "platform_impl_shared_posix_lock"
     "platform_port_string"

cpp/platform/impl/g3/platform.cc

@@ -25,6 +25,7 @@
 #include "platform/impl/g3/settable_future_impl.h"
 #include "platform/impl/g3/system_clock_impl.h"
 #include "platform/impl/shared/atomic_boolean_impl.h"
+#include "platform/impl/shared/file_impl.h"
 #include "platform/impl/shared/posix_condition_variable.h"
 #include "platform/impl/shared/posix_lock.h"
 #include "platform/port/string.h"
@@ -36,6 +37,12 @@ namespace location {
 namespace nearby {
 namespace platform {
 
+namespace {
+std::string getPayloadPath(std::int64_t payload_id) {
+  return "/tmp/" + std::to_string(payload_id);
+}
+}  // namespace
+
 Ptr<SubmittableExecutor> ImplementationPlatform::createSingleThreadExecutor() {
   return Ptr<SubmittableExecutor>(/*new SingleThreadExecutorImpl()*/);
 }
@@ -86,6 +93,16 @@ Ptr<AtomicBoolean> ImplementationPlatform::createAtomicBoolean(
   return Ptr<AtomicBoolean>(new AtomicBooleanImpl(initial_value));
 }
 
+Ptr<InputFile> ImplementationPlatform::createInputFile(
+    std::int64_t payload_id, std::int64_t total_size) {
+  return MakePtr(new InputFileImpl(getPayloadPath(payload_id), total_size));
+}
+
+Ptr<OutputFile> ImplementationPlatform::createOutputFile(
+    std::int64_t payload_id) {
+  return MakePtr(new OutputFileImpl(getPayloadPath(payload_id)));
+}
+
 Ptr<BluetoothClassicMedium>
 ImplementationPlatform::createBluetoothClassicMedium() {
   return Ptr<BluetoothClassicMedium>();
@@ -131,10 +148,6 @@ std::string ImplementationPlatform::getDeviceId() {
   return "google3";
 }
 
-std::string ImplementationPlatform::getPayloadPath(int64_t payload_id) {
-  return "/tmp/" + std::to_string(payload_id);
-}
-
 }  // namespace platform
 }  // namespace nearby
 }  // namespace location