Initial snapshot - OpenTelemetry demo 2.1.3 -f

8 files changed, 511 insertions, 0 deletions

diff --git a/src/email/.dockerignore b/src/email/.dockerignore
new file mode 100644
index 0000000..b43bf86
--- /dev/null
+++ b/src/email/.dockerignore
@@ -0,0 +1 @@
+README.md
diff --git a/src/email/.ruby-version b/src/email/.ruby-version
new file mode 100644
index 0000000..f989260
--- /dev/null
+++ b/src/email/.ruby-version
@@ -0,0 +1 @@
+3.4.4
diff --git a/src/email/Dockerfile b/src/email/Dockerfile
new file mode 100644
index 0000000..c2aa6d3
--- /dev/null
+++ b/src/email/Dockerfile
@@ -0,0 +1,28 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+
+FROM docker.io/library/ruby:3.4.4-alpine3.22 AS builder
+
+COPY ./src/email/Gemfile Gemfile
+COPY ./src/email/Gemfile.lock Gemfile.lock
+
+RUN apk update && \
+    apk add make gcc musl-dev gcompat && \
+    bundle install
+
+FROM docker.io/library/ruby:3.4.4-alpine3.22
+
+COPY --from=builder /usr/local/bundle/ /usr/local/bundle/
+
+WORKDIR /email_server
+
+COPY ./src/email/views/ views/
+
+COPY ./src/email/.ruby-version .ruby-version
+COPY ./src/email/Gemfile Gemfile
+COPY ./src/email/Gemfile.lock Gemfile.lock
+COPY ./src/email/email_server.rb email_server.rb
+
+EXPOSE ${EMAIL_PORT}
+ENTRYPOINT ["bundle", "exec", "ruby", "email_server.rb"]
diff --git a/src/email/Gemfile b/src/email/Gemfile
new file mode 100644
index 0000000..7d2890a
--- /dev/null
+++ b/src/email/Gemfile
@@ -0,0 +1,18 @@
+
+
+source "https://rubygems.org"
+
+gem "net-smtp", "~> 0.5.1"
+gem "pony",     "~> 1.13"
+gem "puma",     "~> 7.0"
+gem "sinatra",  "~> 4.1"
+gem "rackup",   "~> 2.2"
+
+gem "google-protobuf", "~> 4.32.0"
+
+gem "opentelemetry-sdk",                 "~> 1.8"
+gem "opentelemetry-exporter-otlp",       "~> 0.30.0"
+gem "opentelemetry-instrumentation-all", "~> 0.80.0"
+
+gem "openfeature-sdk", "~> 0.4"
+gem "openfeature-flagd-provider", "~> 0.1"
diff --git a/src/email/Gemfile.lock b/src/email/Gemfile.lock
new file mode 100644
index 0000000..53e6da2
--- /dev/null
+++ b/src/email/Gemfile.lock
@@ -0,0 +1,304 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    base64 (0.2.0)
+    bigdecimal (3.2.2)
+    date (3.4.1)
+    google-protobuf (4.32.0-aarch64-linux-musl)
+      bigdecimal
+      rake (>= 13)
+    google-protobuf (4.32.0-arm64-darwin)
+      bigdecimal
+      rake (>= 13)
+    google-protobuf (4.32.0-x86_64-darwin)
+      bigdecimal
+      rake (>= 13)
+    google-protobuf (4.32.0-x86_64-linux-musl)
+      bigdecimal
+      rake (>= 13)
+    googleapis-common-protos-types (1.20.0)
+      google-protobuf (>= 3.18, < 5.a)
+    logger (1.7.0)
+    mail (2.8.1)
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    mini_mime (1.1.5)
+    mustermann (3.0.3)
+      ruby2_keywords (~> 0.0.1)
+    net-imap (0.5.8)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.2)
+      timeout
+    net-smtp (0.5.1)
+      net-protocol
+    nio4r (2.7.4)
+    opentelemetry-api (1.6.0)
+    opentelemetry-common (0.22.0)
+      opentelemetry-api (~> 1.0)
+    opentelemetry-exporter-otlp (0.30.0)
+      google-protobuf (>= 3.18)
+      googleapis-common-protos-types (~> 1.3)
+      opentelemetry-api (~> 1.1)
+      opentelemetry-common (~> 0.20)
+      opentelemetry-sdk (~> 1.2)
+      opentelemetry-semantic_conventions
+    opentelemetry-helpers-mysql (0.2.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.21)
+    opentelemetry-helpers-sql (0.1.1)
+      opentelemetry-api (~> 1.0)
+    opentelemetry-helpers-sql-obfuscation (0.3.0)
+      opentelemetry-common (~> 0.21)
+    opentelemetry-instrumentation-action_mailer (0.4.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-active_support (~> 0.7)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-action_pack (0.13.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+      opentelemetry-instrumentation-rack (~> 0.21)
+    opentelemetry-instrumentation-action_view (0.9.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-active_support (~> 0.7)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-active_job (0.8.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-active_model_serializers (0.22.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-active_support (>= 0.7.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-active_record (0.9.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-active_storage (0.1.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-active_support (~> 0.7)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-active_support (0.8.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-all (0.80.0)
+      opentelemetry-instrumentation-active_model_serializers (~> 0.22.0)
+      opentelemetry-instrumentation-aws_lambda (~> 0.3.0)
+      opentelemetry-instrumentation-aws_sdk (~> 0.8.0)
+      opentelemetry-instrumentation-bunny (~> 0.22.0)
+      opentelemetry-instrumentation-concurrent_ruby (~> 0.22.0)
+      opentelemetry-instrumentation-dalli (~> 0.27.0)
+      opentelemetry-instrumentation-delayed_job (~> 0.23.0)
+      opentelemetry-instrumentation-ethon (~> 0.23.0)
+      opentelemetry-instrumentation-excon (~> 0.24.0)
+      opentelemetry-instrumentation-faraday (~> 0.28.0)
+      opentelemetry-instrumentation-grape (~> 0.3.0)
+      opentelemetry-instrumentation-graphql (~> 0.29.0)
+      opentelemetry-instrumentation-grpc (~> 0.2.0)
+      opentelemetry-instrumentation-gruf (~> 0.3.0)
+      opentelemetry-instrumentation-http (~> 0.25.0)
+      opentelemetry-instrumentation-http_client (~> 0.24.0)
+      opentelemetry-instrumentation-httpx (~> 0.3.0)
+      opentelemetry-instrumentation-koala (~> 0.21.0)
+      opentelemetry-instrumentation-lmdb (~> 0.23.0)
+      opentelemetry-instrumentation-mongo (~> 0.23.0)
+      opentelemetry-instrumentation-mysql2 (~> 0.29.0)
+      opentelemetry-instrumentation-net_http (~> 0.23.0)
+      opentelemetry-instrumentation-pg (~> 0.30.0)
+      opentelemetry-instrumentation-que (~> 0.9.0)
+      opentelemetry-instrumentation-racecar (~> 0.4.0)
+      opentelemetry-instrumentation-rack (~> 0.27.0)
+      opentelemetry-instrumentation-rails (~> 0.37.0)
+      opentelemetry-instrumentation-rake (~> 0.3.1)
+      opentelemetry-instrumentation-rdkafka (~> 0.7.0)
+      opentelemetry-instrumentation-redis (~> 0.26.1)
+      opentelemetry-instrumentation-resque (~> 0.6.0)
+      opentelemetry-instrumentation-restclient (~> 0.24.0)
+      opentelemetry-instrumentation-ruby_kafka (~> 0.22.0)
+      opentelemetry-instrumentation-sidekiq (~> 0.26.0)
+      opentelemetry-instrumentation-sinatra (~> 0.26.0)
+      opentelemetry-instrumentation-trilogy (~> 0.61.0)
+    opentelemetry-instrumentation-aws_lambda (0.3.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-aws_sdk (0.8.2)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-base (0.23.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.21)
+      opentelemetry-registry (~> 0.1)
+    opentelemetry-instrumentation-bunny (0.22.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-concurrent_ruby (0.22.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-dalli (0.27.3)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-delayed_job (0.23.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-ethon (0.23.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-excon (0.24.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-faraday (0.28.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-grape (0.3.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+      opentelemetry-instrumentation-rack (~> 0.21)
+    opentelemetry-instrumentation-graphql (0.29.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-grpc (0.2.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-gruf (0.3.0)
+      opentelemetry-api (>= 1.0.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-http (0.25.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-http_client (0.24.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-httpx (0.3.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-koala (0.21.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-lmdb (0.23.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-mongo (0.23.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-mysql2 (0.29.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-helpers-mysql
+      opentelemetry-helpers-sql
+      opentelemetry-helpers-sql-obfuscation
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-net_http (0.23.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-pg (0.30.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-helpers-sql
+      opentelemetry-helpers-sql-obfuscation
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-que (0.9.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-racecar (0.4.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-rack (0.27.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-rails (0.37.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-action_mailer (~> 0.4.0)
+      opentelemetry-instrumentation-action_pack (~> 0.13.0)
+      opentelemetry-instrumentation-action_view (~> 0.9.0)
+      opentelemetry-instrumentation-active_job (~> 0.8.0)
+      opentelemetry-instrumentation-active_record (~> 0.9.0)
+      opentelemetry-instrumentation-active_storage (~> 0.1.0)
+      opentelemetry-instrumentation-active_support (~> 0.8.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+      opentelemetry-instrumentation-concurrent_ruby (~> 0.22.0)
+    opentelemetry-instrumentation-rake (0.3.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-rdkafka (0.7.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-redis (0.26.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-resque (0.6.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-restclient (0.24.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-ruby_kafka (0.22.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-sidekiq (0.26.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+    opentelemetry-instrumentation-sinatra (0.26.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.23.0)
+      opentelemetry-instrumentation-rack (~> 0.21)
+    opentelemetry-instrumentation-trilogy (0.61.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-helpers-mysql
+      opentelemetry-helpers-sql
+      opentelemetry-helpers-sql-obfuscation
+      opentelemetry-instrumentation-base (~> 0.23.0)
+      opentelemetry-semantic_conventions (>= 1.8.0)
+    opentelemetry-registry (0.4.0)
+      opentelemetry-api (~> 1.1)
+    opentelemetry-sdk (1.8.1)
+      opentelemetry-api (~> 1.1)
+      opentelemetry-common (~> 0.20)
+      opentelemetry-registry (~> 0.2)
+      opentelemetry-semantic_conventions
+    opentelemetry-semantic_conventions (1.11.0)
+      opentelemetry-api (~> 1.0)
+    pony (1.13.1)
+      mail (>= 2.0)
+    puma (7.0.0)
+      nio4r (~> 2.0)
+    rack (3.1.15)
+    rack-protection (4.1.1)
+      base64 (>= 0.1.0)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.1.1)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
+    rackup (2.2.1)
+      rack (>= 3)
+    rake (13.3.0)
+    ruby2_keywords (0.0.5)
+    sinatra (4.1.1)
+      logger (>= 1.6.0)
+      mustermann (~> 3.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.1.1)
+      rack-session (>= 2.0.0, < 3)
+      tilt (~> 2.0)
+    tilt (2.6.0)
+    timeout (0.4.3)
+
+PLATFORMS
+  aarch64-linux-musl
+  arm64-darwin
+  x86_64-darwin
+  x86_64-linux-musl
+
+DEPENDENCIES
+  google-protobuf (~> 4.32.0)
+  net-smtp (~> 0.5.1)
+  opentelemetry-exporter-otlp (~> 0.30.0)
+  opentelemetry-instrumentation-all (~> 0.80.0)
+  opentelemetry-sdk (~> 1.8)
+  pony (~> 1.13)
+  puma (~> 7.0)
+  rackup (~> 2.2)
+  sinatra (~> 4.1)
+
+BUNDLED WITH
+   2.6.7
diff --git a/src/email/README.md b/src/email/README.md
new file mode 100644
index 0000000..13533d8
--- /dev/null
+++ b/src/email/README.md
@@ -0,0 +1,23 @@
+# Email Service
+
+The Email service "sends" an email to the customer with their order details by
+rendering it as a log message. It expects a JSON payload like:
+
+```json
+{
+  "email": "some.address@website.com",
+  "order": "<serialized order protobuf>"
+}
+```
+
+## Local Build
+
+We use `bundler` to manage dependencies. To get started, simply `bundle install`.
+
+## Running locally
+
+You may run this service locally with `bundle exec ruby email_server.rb`.
+
+## Docker Build
+
+From `src/email`, run `docker build .`
diff --git a/src/email/email_server.rb b/src/email/email_server.rb
new file mode 100644
index 0000000..98a5259
--- /dev/null
+++ b/src/email/email_server.rb
@@ -0,0 +1,83 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+require "ostruct"
+require "pony"
+require "sinatra"
+require "open_feature/sdk"
+require "openfeature/flagd/provider"
+# require "open_feature/flagd_provider"
+
+require "opentelemetry/sdk"
+require "opentelemetry/exporter/otlp"
+require "opentelemetry/instrumentation/sinatra"
+
+set :port, ENV["EMAIL_PORT"]
+
+# Initialize OpenFeature SDK with flagd provider
+flagd_client = OpenFeature::Flagd::Provider.build_client
+flagd_client.configure do |config|
+  config.host = ENV.fetch("FLAGD_HOST", "localhost")
+  config.port = ENV.fetch("FLAGD_PORT", 8013).to_i
+  config.tls = ENV.fetch("FLAGD_TLS", "false") == "true"
+end
+
+OpenFeature::SDK.configure do |config|
+  config.set_provider(flagd_client)
+end
+
+OpenTelemetry::SDK.configure do |c|
+  c.use "OpenTelemetry::Instrumentation::Sinatra"
+end
+
+post "/send_order_confirmation" do
+  data = JSON.parse(request.body.read, object_class: OpenStruct)
+
+  # get the current auto-instrumented span
+  current_span = OpenTelemetry::Trace.current_span
+  current_span.add_attributes({
+    "app.order.id" => data.order.order_id,
+  })
+
+  send_email(data)
+
+end
+
+error do
+  OpenTelemetry::Trace.current_span.record_exception(env['sinatra.error'])
+end
+
+def send_email(data)
+  # create and start a manual span
+  tracer = OpenTelemetry.tracer_provider.tracer('email')
+  tracer.in_span("send_email") do |span|
+    # Check if memory leak flag is enabled
+    client = OpenFeature::SDK.build_client
+    memory_leak_multiplier = client.fetch_number_value(flag_key: "emailMemoryLeak", default_value: 0)
+
+    # To speed up the memory leak we create a long email body
+    confirmation_content = erb(:confirmation, locals: { order: data.order })
+    whitespace_length = [0, confirmation_content.length * (memory_leak_multiplier-1)].max
+
+    Pony.mail(
+      to:       data.email,
+      from:     "noreply@example.com",
+      subject:  "Your confirmation email",
+      body:     confirmation_content + " " * whitespace_length,
+      via:      :test
+    )
+
+    # If not clearing the deliveries, the emails will accumulate in the test mailer
+    # We use this to create a memory leak.
+    if memory_leak_multiplier < 1
+      Mail::TestMailer.deliveries.clear
+    end
+
+    span.set_attribute("app.email.recipient", data.email)
+    puts "Order confirmation email sent to: #{data.email}"
+  end
+  # manually created spans need to be ended
+  # in Ruby, the method `in_span` ends it automatically
+  # check out the OpenTelemetry Ruby docs at: 
+  # https://opentelemetry.io/docs/instrumentation/ruby/manual/#creating-new-spans 
+end
diff --git a/src/email/views/confirmation.erb b/src/email/views/confirmation.erb
new file mode 100644
index 0000000..aba297d
--- /dev/null
+++ b/src/email/views/confirmation.erb
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!--
+ Copyright 2020 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<html>
+  <head>
+    <title>Your Order Confirmation</title>
+    <link href="https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
+  </head>
+  <style>
+    body{
+      font-family: 'DM Sans', sans-serif;
+    }
+  </style>
+  <body>
+    <h2>Your Order Confirmation</h2>
+    <p>Thanks for shopping with us!<p>
+    <h3>Order ID</h3>
+    <p><%= order.order_id %></p>
+    <h3>Shipping</h3>
+    <p><%= order.shipping_tracking_id %></p>
+    <p><%= order.shipping_cost.units %>.<%= order.shipping_cost.nanos %> <%= order.shipping_cost.currency_code %></p>
+    <p><%= order.shipping_address.street_address_1 %>, <%= order.shipping_address.street_address_2 %>, <%= order.shipping_address.city %>, <%= order.shipping_address.country %> <%= order.shipping_address.zip_code %></p>
+    <h3>Items</h3>
+    <table style="width:100%">
+        <tr>
+          <th>Item No.</th>
+          <th>Quantity</th>
+          <th>Price</th>
+        </tr>
+        <% order.items.each do |item| %>
+          <tr>
+            <td><%= item.item.product_id %></td>
+            <td><%= item.item.quantity %></td>
+            <td><%= item.cost.units %>.<%= item.cost.nanos %> <%= item.cost.currency_code %></td>
+          </tr>
+        <% end %>
+    </table>
+  </body>
+</html>