Improves support for long build traces:

8 files changed, 163 insertions, 40 deletions

diff --git a/app/assets/javascripts/build.js b/app/assets/javascripts/build.js
index 0aad95c2fe3..97f279e4be4 100644
--- a/app/assets/javascripts/build.js
+++ b/app/assets/javascripts/build.js
@@ -2,6 +2,8 @@
 consistent-return, prefer-rest-params */
 /* global Breakpoints */
 
+import { bytesToKiB } from './lib/utils/number_utils';
+
 const bind = function (fn, me) { return function () { return fn.apply(me, arguments); }; };
 const AUTO_SCROLL_OFFSET = 75;
 const DOWN_BUILD_TRACE = '#down-build-trace';
@@ -20,6 +22,7 @@ window.Build = (function () {
     this.state = this.options.logState;
     this.buildStage = this.options.buildStage;
     this.$document = $(document);
+    this.logBytes = 0;
 
     this.updateDropdown = bind(this.updateDropdown, this);
 
@@ -98,15 +101,22 @@ window.Build = (function () {
 
         if (log.append) {
           $buildContainer.append(log.html);
+          this.logBytes += log.size;
         } else {
           $buildContainer.html(log.html);
-          if (log.truncated) {
-            $('.js-truncated-info-size').html(` ${log.size} `);
-            this.$truncatedInfo.removeClass('hidden');
-            this.initAffixTruncatedInfo();
-          } else {
-            this.$truncatedInfo.addClass('hidden');
-          }
+          this.logBytes = log.size;
+        }
+
+        // if the incremental sum of logBytes we received is less than the total
+        // we need to show a message warning the user about that.
+        if (this.logBytes < log.total) {
+          // size is in bytes, we need to calculate KiB
+          const size = bytesToKiB(this.logBytes);
+          $('.js-truncated-info-size').html(`${size}`);
+          this.$truncatedInfo.removeClass('hidden');
+          this.initAffixTruncatedInfo();
+        } else {
+          this.$truncatedInfo.addClass('hidden');
         }
 
         this.checkAutoscroll();
diff --git a/app/assets/javascripts/lib/utils/constants.js b/app/assets/javascripts/lib/utils/constants.js
new file mode 100644
index 00000000000..1e96c7ab5cd
--- /dev/null
+++ b/app/assets/javascripts/lib/utils/constants.js
@@ -0,0 +1,2 @@
+/* eslint-disable import/prefer-default-export */
+export const BYTES_IN_KIB = 1024;
diff --git a/app/assets/javascripts/lib/utils/number_utils.js b/app/assets/javascripts/lib/utils/number_utils.js
index e2bf69ee52e..f1b07408671 100644
--- a/app/assets/javascripts/lib/utils/number_utils.js
+++ b/app/assets/javascripts/lib/utils/number_utils.js
@@ -1,4 +1,4 @@
-/* eslint-disable import/prefer-default-export */
+import { BYTES_IN_KIB } from './constants';
 
 /**
  * Function that allows a number with an X amount of decimals
@@ -32,3 +32,13 @@ export function formatRelevantDigits(number) {
   }
   return formattedNumber;
 }
+
+/**
+ * Utility function that calculates KiB of the given bytes.
+ *
+ * @param  {Number} number bytes
+ * @return {Number}        KiB
+ */
+export function bytesToKiB(number) {
+  return number / BYTES_IN_KIB;
+}
diff --git a/app/assets/stylesheets/pages/builds.scss b/app/assets/stylesheets/pages/builds.scss
index 144adbcdaef..411f1c4442b 100644
--- a/app/assets/stylesheets/pages/builds.scss
+++ b/app/assets/stylesheets/pages/builds.scss
@@ -61,8 +61,9 @@
   .truncated-info {
     text-align: center;
     border-bottom: 1px solid;
-    background-color: $black-transparent;
+    background-color: $black;
     height: 45px;
+    padding: 15px;
 
     &.affix {
       top: 0;
@@ -87,6 +88,16 @@
       right: 5px;
       left: 5px;
     }
+
+    .truncated-info-size {
+      margin: 0 5px;
+    }
+
+    .raw-link {
+      color: inherit;
+      margin-left: 5px;
+      text-decoration: underline;
+    }
   }
 }
 
diff --git a/app/views/projects/builds/show.html.haml b/app/views/projects/builds/show.html.haml
index 0faad57a312..7cb2ec83cc7 100644
--- a/app/views/projects/builds/show.html.haml
+++ b/app/views/projects/builds/show.html.haml
@@ -71,11 +71,11 @@
                   = custom_icon('scroll_down_hover_active')
         #up-build-trace
         %pre.build-trace#build-trace
-          .js-truncated-info.truncated-info.hidden
-            %span<
-              Showing last
-              %span.js-truncated-info-size><
-              KiB of log
+          .js-truncated-info.truncated-info.hidden<
+            Showing last
+            %span.js-truncated-info-size.truncated-info-size><
+            KiB of log -
+            %a.js-raw-link.raw-link{ :href => raw_namespace_project_build_path(@project.namespace, @project, @build) }>< Complete Raw
           %code.bash.js-build-output
           .build-loader-animation.js-build-refresh
 
diff --git a/lib/gitlab/ci/trace/stream.rb b/lib/gitlab/ci/trace/stream.rb
index 68b14c7c04c..fa462cbe095 100644
--- a/lib/gitlab/ci/trace/stream.rb
+++ b/lib/gitlab/ci/trace/stream.rb
@@ -4,7 +4,7 @@ module Gitlab
       # This was inspired from: http://stackoverflow.com/a/10219411/1520132
       class Stream
         BUFFER_SIZE = 4096
-        LIMIT_SIZE = 50.kilobytes
+        LIMIT_SIZE = 500.kilobytes
 
         attr_reader :stream
 
diff --git a/spec/javascripts/build_spec.js b/spec/javascripts/build_spec.js
index 7174bf1e041..8ec96bdb583 100644
--- a/spec/javascripts/build_spec.js
+++ b/spec/javascripts/build_spec.js
@@ -1,11 +1,11 @@
 /* eslint-disable no-new */
 /* global Build */
-
-require('~/lib/utils/datetime_utility');
-require('~/lib/utils/url_utility');
-require('~/build');
-require('~/breakpoints');
-require('vendor/jquery.nicescroll');
+import { bytesToKiB } from '~/lib/utils/number_utils';
+import '~/lib/utils/datetime_utility';
+import '~/lib/utils/url_utility';
+import '~/build';
+import '~/breakpoints';
+import 'vendor/jquery.nicescroll';
 
 describe('Build', () => {
   const BUILD_URL = `${gl.TEST_HOST}/frontend-fixtures/builds-project/builds/1`;
@@ -144,24 +144,6 @@ describe('Build', () => {
         expect($('#build-trace .js-build-output').text()).toMatch(/Different/);
       });
 
-      it('shows information about truncated log', () => {
-        jasmine.clock().tick(4001);
-        const [{ success }] = $.ajax.calls.argsFor(0);
-
-        success.call($, {
-          html: '<span>Update</span>',
-          status: 'success',
-          append: false,
-          truncated: true,
-          size: '50',
-        });
-
-        expect(
-          $('#build-trace .js-truncated-info').text().trim(),
-        ).toContain('Showing last 50 KiB of log');
-        expect($('#build-trace .js-truncated-info-size').text()).toMatch('50');
-      });
-
       it('reloads the page when the build is done', () => {
         spyOn(gl.utils, 'visitUrl');
 
@@ -176,6 +158,107 @@ describe('Build', () => {
 
         expect(gl.utils.visitUrl).toHaveBeenCalledWith(BUILD_URL);
       });
+
+      describe('truncated information', () => {
+        describe('when size is less than total', () => {
+          it('shows information about truncated log', () => {
+            jasmine.clock().tick(4001);
+            const [{ success }] = $.ajax.calls.argsFor(0);
+
+            success.call($, {
+              html: '<span>Update</span>',
+              status: 'success',
+              append: false,
+              size: 50,
+              total: 100,
+            });
+
+            expect(document.querySelector('.js-truncated-info').classList).not.toContain('hidden');
+          });
+
+          it('shows the size in KiB', () => {
+            jasmine.clock().tick(4001);
+            const [{ success }] = $.ajax.calls.argsFor(0);
+            const size = 50;
+
+            success.call($, {
+              html: '<span>Update</span>',
+              status: 'success',
+              append: false,
+              size,
+              total: 100,
+            });
+
+            expect(
+              document.querySelector('.js-truncated-info-size').textContent.trim(),
+            ).toEqual(`${bytesToKiB(size)}`);
+          });
+
+          it('shows incremented size', () => {
+            jasmine.clock().tick(4001);
+            let args = $.ajax.calls.argsFor(0)[0];
+            args.success.call($, {
+              html: '<span>Update</span>',
+              status: 'success',
+              append: false,
+              size: 50,
+              total: 100,
+            });
+
+            expect(
+              document.querySelector('.js-truncated-info-size').textContent.trim(),
+            ).toEqual(`${bytesToKiB(50)}`);
+
+            jasmine.clock().tick(4001);
+            args = $.ajax.calls.argsFor(2)[0];
+            args.success.call($, {
+              html: '<span>Update</span>',
+              status: 'success',
+              append: true,
+              size: 10,
+              total: 100,
+            });
+
+            expect(
+              document.querySelector('.js-truncated-info-size').textContent.trim(),
+            ).toEqual(`${bytesToKiB(60)}`);
+          });
+
+          it('renders the raw link', () => {
+            jasmine.clock().tick(4001);
+            const [{ success }] = $.ajax.calls.argsFor(0);
+
+            success.call($, {
+              html: '<span>Update</span>',
+              status: 'success',
+              append: false,
+              size: 50,
+              total: 100,
+            });
+
+            expect(
+              document.querySelector('.js-raw-link').textContent.trim(),
+            ).toContain('Complete Raw');
+          });
+        });
+
+        describe('when size is equal than total', () => {
+          it('does not show the trunctated information', () => {
+            jasmine.clock().tick(4001);
+            const [{ success }] = $.ajax.calls.argsFor(0);
+
+            success.call($, {
+              html: '<span>Update</span>',
+              status: 'success',
+              append: false,
+              size: 100,
+              total: 100,
+            });
+
+            expect(document.querySelector('.js-truncated-info').classList).toContain('hidden');
+          });
+        });
+      });
     });
   });
 });
diff --git a/spec/javascripts/lib/utils/number_utility_spec.js b/spec/javascripts/lib/utils/number_utility_spec.js
index 5fde8be9123..90b12c9f115 100644
--- a/spec/javascripts/lib/utils/number_utility_spec.js
+++ b/spec/javascripts/lib/utils/number_utility_spec.js
@@ -1,4 +1,4 @@
-import { formatRelevantDigits } from '~/lib/utils/number_utils';
+import { formatRelevantDigits, bytesToKiB } from '~/lib/utils/number_utils';
 
 describe('Number Utils', () => {
   describe('formatRelevantDigits', () => {
@@ -38,4 +38,11 @@ describe('Number Utils', () => {
       expect(leftFromDecimal.length).toBe(3);
     });
   });
+
+  describe('bytesToKiB', () => {
+    it('calculates KiB for the given bytes', () => {
+      expect(bytesToKiB(1024)).toEqual(1);
+      expect(bytesToKiB(1000)).toEqual(0.9765625);
+    });
+  });
 });