Add start_time to resource timing.

This commit is contained in:
Tommy Lincoln 2019-10-15 03:06:43 -07:00
parent 1f64024655
commit fcad88cddd
8 changed files with 280 additions and 15 deletions

View file

@ -474,6 +474,7 @@ pub struct ResourceFetchTiming {
pub redirect_end: u64,
pub connect_start: u64,
pub connect_end: u64,
pub start_time: u64,
}
pub enum RedirectStartValue {
@ -487,6 +488,15 @@ pub enum RedirectEndValue {
ResponseEnd,
}
// TODO: refactor existing code to use this enum for setting time attributes
// suggest using this with all time attributes in the future
pub enum ResourceTimeValue {
Zero,
Now,
FetchStart,
RedirectStart,
}
pub enum ResourceAttribute {
RedirectCount(u16),
DomainLookupStart,
@ -499,6 +509,7 @@ pub enum ResourceAttribute {
ConnectEnd(u64),
SecureConnectionStart,
ResponseEnd,
StartTime(ResourceTimeValue),
}
#[derive(Clone, Copy, Debug, Deserialize, MallocSizeOf, PartialEq, Serialize)]
@ -525,6 +536,7 @@ impl ResourceFetchTiming {
connect_start: 0,
connect_end: 0,
response_end: 0,
start_time: 0,
}
}
@ -532,7 +544,9 @@ impl ResourceFetchTiming {
// time origin (as described in Performance::now)
pub fn set_attribute(&mut self, attribute: ResourceAttribute) {
let should_attribute_always_be_updated = match attribute {
ResourceAttribute::FetchStart | ResourceAttribute::ResponseEnd => true,
ResourceAttribute::FetchStart |
ResourceAttribute::ResponseEnd |
ResourceAttribute::StartTime(_) => true,
_ => false,
};
if !self.timing_check_passed && !should_attribute_always_be_updated {
@ -562,6 +576,20 @@ impl ResourceFetchTiming {
self.secure_connection_start = precise_time_ns()
},
ResourceAttribute::ResponseEnd => self.response_end = precise_time_ns(),
ResourceAttribute::StartTime(val) => match val {
ResourceTimeValue::RedirectStart
if self.redirect_start == 0 || !self.timing_check_passed => {},
_ => self.start_time = self.get_time_value(val),
},
}
}
fn get_time_value(&self, time: ResourceTimeValue) -> u64 {
match time {
ResourceTimeValue::Zero => 0,
ResourceTimeValue::Now => precise_time_ns(),
ResourceTimeValue::FetchStart => self.fetch_start,
ResourceTimeValue::RedirectStart => self.redirect_start,
}
}

View file

@ -0,0 +1,215 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use net_traits::{ResourceAttribute, ResourceFetchTiming, ResourceTimeValue, ResourceTimingType};
#[test]
fn test_set_start_time_to_fetch_start_if_nonzero_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.fetch_start = 1;
assert_eq!(resource_timing.start_time, 0, "`start_time` should be zero");
assert!(
resource_timing.fetch_start > 0,
"`fetch_start` should have a positive value"
);
// verify that setting `start_time` to `fetch_start` succeeds
resource_timing.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::FetchStart));
assert_eq!(
resource_timing.start_time, resource_timing.fetch_start,
"`start_time` should equal `fetch_start`"
);
}
#[test]
fn test_set_start_time_to_fetch_start_if_zero_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.start_time = 1;
assert!(
resource_timing.start_time > 0,
"`start_time` should have a positive value"
);
assert_eq!(
resource_timing.fetch_start, 0,
"`fetch_start` should be zero"
);
// verify that setting `start_time` to `fetch_start` succeeds even when `fetch_start` == zero
resource_timing.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::FetchStart));
assert_eq!(
resource_timing.start_time, resource_timing.fetch_start,
"`start_time` should equal `fetch_start`"
);
}
#[test]
fn test_set_start_time_to_fetch_start_if_nonzero_no_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.mark_timing_check_failed();
resource_timing.fetch_start = 1;
assert_eq!(resource_timing.start_time, 0, "`start_time` should be zero");
assert!(
resource_timing.fetch_start > 0,
"`fetch_start` should have a positive value"
);
// verify that setting `start_time` to `fetch_start` succeeds even when TAO check failed
resource_timing.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::FetchStart));
assert_eq!(
resource_timing.start_time, resource_timing.fetch_start,
"`start_time` should equal `fetch_start`"
);
}
#[test]
fn test_set_start_time_to_fetch_start_if_zero_no_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.mark_timing_check_failed();
resource_timing.start_time = 1;
assert!(
resource_timing.start_time > 0,
"`start_time` should have a positive value"
);
assert_eq!(
resource_timing.fetch_start, 0,
"`fetch_start` should be zero"
);
// verify that setting `start_time` to `fetch_start` succeeds even when `fetch_start`==0 and no TAO
resource_timing.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::FetchStart));
assert_eq!(
resource_timing.start_time, resource_timing.fetch_start,
"`start_time` should equal `fetch_start`"
);
}
#[test]
fn test_set_start_time_to_redirect_start_if_nonzero_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.redirect_start = 1;
assert_eq!(resource_timing.start_time, 0, "`start_time` should be zero");
assert!(
resource_timing.redirect_start > 0,
"`redirect_start` should have a positive value"
);
// verify that setting `start_time` to `redirect_start` succeeds for nonzero `redirect_start`, TAO pass
resource_timing.set_attribute(ResourceAttribute::StartTime(
ResourceTimeValue::RedirectStart,
));
assert_eq!(
resource_timing.start_time, resource_timing.redirect_start,
"`start_time` should equal `redirect_start`"
);
}
#[test]
fn test_not_set_start_time_to_redirect_start_if_zero_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.start_time = 1;
assert!(
resource_timing.start_time > 0,
"`start_time` should have a positive value"
);
assert_eq!(
resource_timing.redirect_start, 0,
"`redirect_start` should be zero"
);
// verify that setting `start_time` to `redirect_start` fails if `redirect_start` == 0
resource_timing.set_attribute(ResourceAttribute::StartTime(
ResourceTimeValue::RedirectStart,
));
assert_ne!(
resource_timing.start_time, resource_timing.redirect_start,
"`start_time` should *not* equal `redirect_start`"
);
}
#[test]
fn test_not_set_start_time_to_redirect_start_if_nonzero_no_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.mark_timing_check_failed();
// Note: properly-behaved redirect_start should never be nonzero once TAO check has failed
resource_timing.redirect_start = 1;
assert_eq!(resource_timing.start_time, 0, "`start_time` should be zero");
assert!(
resource_timing.redirect_start > 0,
"`redirect_start` should have a positive value"
);
// verify that setting `start_time` to `redirect_start` fails if TAO check fails
resource_timing.set_attribute(ResourceAttribute::StartTime(
ResourceTimeValue::RedirectStart,
));
assert_ne!(
resource_timing.start_time, resource_timing.redirect_start,
"`start_time` should *not* equal `redirect_start`"
);
}
#[test]
fn test_not_set_start_time_to_redirect_start_if_zero_no_tao() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
resource_timing.mark_timing_check_failed();
resource_timing.start_time = 1;
assert!(
resource_timing.start_time > 0,
"`start_time` should have a positive value"
);
assert_eq!(
resource_timing.redirect_start, 0,
"`redirect_start` should be zero"
);
// verify that setting `start_time` to `redirect_start` fails if `redirect_start`==0 and no TAO
resource_timing.set_attribute(ResourceAttribute::StartTime(
ResourceTimeValue::RedirectStart,
));
assert_ne!(
resource_timing.start_time, resource_timing.redirect_start,
"`start_time` should *not* equal `redirect_start`"
);
}
#[test]
fn test_set_start_time() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
assert_eq!(
resource_timing.start_time, 0,
"initial `start_time` should be zero"
);
// verify setting `start_time` to current time succeeds
resource_timing.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::Now));
assert!(resource_timing.start_time > 0, "failed to set `start_time`");
}
#[test]
fn test_reset_start_time() {
let mut resource_timing: ResourceFetchTiming =
ResourceFetchTiming::new(ResourceTimingType::Resource);
assert_eq!(resource_timing.start_time, 0, "initial `start_time` = 0");
resource_timing.start_time = 1;
assert!(
resource_timing.start_time > 0,
"`start_time` should have a positive value"
);
// verify resetting `start_time` (to zero) succeeds
resource_timing.set_attribute(ResourceAttribute::StartTime(ResourceTimeValue::Zero));
assert_eq!(
resource_timing.start_time, 0,
"failed to reset `start_time`"
);
}