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Response total size #136

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merged 2 commits into from
Feb 3, 2020
Merged

Response total size #136

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ec91355
context: add response.total_size (#9839)
kyessenov Jan 28, 2020
25456c3
context: harden empty header cases (#9862)
kyessenov Jan 29, 2020
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1 change: 1 addition & 0 deletions docs/root/intro/arch_overview/security/rbac_filter.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,7 @@ The following attributes are exposed to the language runtime:
response.headers, string map, All response headers
response.trailers, string map, All response trailers
response.size, int, Size of the response body
response.total_size, int, Total size of the response including the approximate uncompressed size of the headers and the trailers
response.flags, int, Additional details about the response beyond the standard response code
source.address, string, Downstream connection remote address
source.port, int, Downstream connection remote port
Expand Down
1 change: 1 addition & 0 deletions source/extensions/filters/common/expr/BUILD
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Expand Up @@ -29,6 +29,7 @@ envoy_cc_library(
hdrs = ["context.h"],
deps = [
"//source/common/grpc:common_lib",
"//source/common/http:header_map_lib",
"//source/common/http:utility_lib",
"//source/common/stream_info:utility_lib",
"@com_google_cel_cpp//eval/public:cel_value",
Expand Down
15 changes: 11 additions & 4 deletions source/extensions/filters/common/expr/context.cc
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@@ -1,6 +1,7 @@
#include "extensions/filters/common/expr/context.h"

#include "common/grpc/common.h"
#include "common/http/header_map_impl.h"
#include "common/http/utility.h"

#include "absl/strings/numbers.h"
Expand Down Expand Up @@ -80,6 +81,9 @@ absl::optional<CelValue> RequestWrapper::operator[](CelValue key) const {
} else {
return CelValue::CreateInt64(info_.bytesReceived());
}
} else if (value == TotalSize) {
return CelValue::CreateInt64(info_.bytesReceived() +
(headers_.value_ ? headers_.value_->byteSize() : 0));
} else if (value == Duration) {
auto duration = info_.requestComplete();
if (duration.has_value()) {
Expand Down Expand Up @@ -115,8 +119,6 @@ absl::optional<CelValue> RequestWrapper::operator[](CelValue key) const {
return convertHeaderEntry(headers_.value_->RequestId());
} else if (value == UserAgent) {
return convertHeaderEntry(headers_.value_->UserAgent());
} else if (value == TotalSize) {
return CelValue::CreateInt64(info_.bytesReceived() + headers_.value_->byteSize());
}
}
return {};
Expand All @@ -141,12 +143,17 @@ absl::optional<CelValue> ResponseWrapper::operator[](CelValue key) const {
} else if (value == Flags) {
return CelValue::CreateInt64(info_.responseFlags());
} else if (value == GrpcStatus) {
auto const& optional_status =
Grpc::Common::getGrpcStatus(*(trailers_.value_), *(headers_.value_), info_);
auto const& optional_status = Grpc::Common::getGrpcStatus(
trailers_.value_ ? *trailers_.value_ : ConstSingleton<Http::HeaderMapImpl>::get(),
headers_.value_ ? *headers_.value_ : ConstSingleton<Http::HeaderMapImpl>::get(), info_);
if (optional_status.has_value()) {
return CelValue::CreateInt64(optional_status.value());
}
return {};
} else if (value == TotalSize) {
return CelValue::CreateInt64(info_.bytesSent() +
(headers_.value_ ? headers_.value_->byteSize() : 0) +
(trailers_.value_ ? trailers_.value_->byteSize() : 0));
}
return {};
}
Expand Down
50 changes: 50 additions & 0 deletions test/extensions/filters/common/expr/context_test.cc
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Expand Up @@ -32,12 +32,14 @@ TEST(Context, EmptyHeadersAttributes) {

TEST(Context, RequestAttributes) {
NiceMock<StreamInfo::MockStreamInfo> info;
NiceMock<StreamInfo::MockStreamInfo> empty_info;
Http::TestHeaderMapImpl header_map{
{":method", "POST"}, {":scheme", "http"}, {":path", "/meow?yes=1"},
{":authority", "kittens.com"}, {"referer", "dogs.com"}, {"user-agent", "envoy-mobile"},
{"content-length", "10"}, {"x-request-id", "blah"},
};
RequestWrapper request(&header_map, info);
RequestWrapper empty_request(nullptr, empty_info);

EXPECT_CALL(info, bytesReceived()).WillRepeatedly(Return(10));
// "2018-04-03T23:06:09.123Z".
Expand Down Expand Up @@ -67,6 +69,12 @@ TEST(Context, RequestAttributes) {
ASSERT_TRUE(value.value().IsString());
EXPECT_EQ("http", value.value().StringOrDie().value());
}

{
auto value = empty_request[CelValue::CreateStringView(Scheme)];
EXPECT_FALSE(value.has_value());
}

{
auto value = request[CelValue::CreateStringView(Host)];
EXPECT_TRUE(value.has_value());
Expand Down Expand Up @@ -131,6 +139,14 @@ TEST(Context, RequestAttributes) {
EXPECT_EQ(138, value.value().Int64OrDie());
}

{
auto value = empty_request[CelValue::CreateStringView(TotalSize)];
EXPECT_TRUE(value.has_value());
ASSERT_TRUE(value.value().IsInt64());
// this includes the headers size
EXPECT_EQ(0, value.value().Int64OrDie());
}

{
auto value = request[CelValue::CreateStringView(Time)];
EXPECT_TRUE(value.has_value());
Expand Down Expand Up @@ -159,12 +175,22 @@ TEST(Context, RequestAttributes) {
EXPECT_EQ("15ms", absl::FormatDuration(value.value().DurationOrDie()));
}

{
auto value = empty_request[CelValue::CreateStringView(Duration)];
EXPECT_FALSE(value.has_value());
}

{
auto value = request[CelValue::CreateStringView(Protocol)];
EXPECT_TRUE(value.has_value());
ASSERT_TRUE(value.value().IsString());
EXPECT_EQ("HTTP/2", value.value().StringOrDie().value());
}

{
auto value = empty_request[CelValue::CreateStringView(Protocol)];
EXPECT_FALSE(value.has_value());
}
}

TEST(Context, RequestFallbackAttributes) {
Expand Down Expand Up @@ -195,12 +221,14 @@ TEST(Context, RequestFallbackAttributes) {

TEST(Context, ResponseAttributes) {
NiceMock<StreamInfo::MockStreamInfo> info;
NiceMock<StreamInfo::MockStreamInfo> empty_info;
const std::string header_name = "test-header";
const std::string trailer_name = "test-trailer";
const std::string grpc_status = "grpc-status";
Http::TestHeaderMapImpl header_map{{header_name, "a"}};
Http::TestHeaderMapImpl trailer_map{{trailer_name, "b"}, {grpc_status, "8"}};
ResponseWrapper response(&header_map, &trailer_map, info);
ResponseWrapper empty_response(nullptr, nullptr, empty_info);

EXPECT_CALL(info, responseCode()).WillRepeatedly(Return(404));
EXPECT_CALL(info, bytesSent()).WillRepeatedly(Return(123));
Expand All @@ -223,6 +251,20 @@ TEST(Context, ResponseAttributes) {
EXPECT_EQ(123, value.value().Int64OrDie());
}

{
auto value = response[CelValue::CreateStringView(TotalSize)];
EXPECT_TRUE(value.has_value());
ASSERT_TRUE(value.value().IsInt64());
EXPECT_EQ(160, value.value().Int64OrDie());
}

{
auto value = empty_response[CelValue::CreateStringView(TotalSize)];
EXPECT_TRUE(value.has_value());
ASSERT_TRUE(value.value().IsInt64());
EXPECT_EQ(0, value.value().Int64OrDie());
}

{
auto value = response[CelValue::CreateStringView(Code)];
EXPECT_TRUE(value.has_value());
Expand Down Expand Up @@ -260,18 +302,26 @@ TEST(Context, ResponseAttributes) {
ASSERT_TRUE(header.value().IsString());
EXPECT_EQ("b", header.value().StringOrDie().value());
}

{
auto value = response[CelValue::CreateStringView(Flags)];
EXPECT_TRUE(value.has_value());
ASSERT_TRUE(value.value().IsInt64());
EXPECT_EQ(0x1, value.value().Int64OrDie());
}

{
auto value = response[CelValue::CreateStringView(GrpcStatus)];
EXPECT_TRUE(value.has_value());
ASSERT_TRUE(value.value().IsInt64());
EXPECT_EQ(0x8, value.value().Int64OrDie());
}

{
auto value = empty_response[CelValue::CreateStringView(GrpcStatus)];
EXPECT_FALSE(value.has_value());
}

{
Http::TestHeaderMapImpl header_map{{header_name, "a"}, {grpc_status, "7"}};
Http::TestHeaderMapImpl trailer_map{{trailer_name, "b"}};
Expand Down