fastly resource

fastly.rb

fastly_service 'chef-web-www_prod' do
  
  action :create
  
  domain 'blog.chef.io'
  domain 'www.chef.io'
  domain 'summit.chef.io'
  
  # Request Conditions
  all_www_lb = request_condition 'all_www-lb' do
    statement "req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" ||  req.url ~ \"^/account\"||  req.url ~ \"^/blog\" || req.url ~ \"^/chef/install.msi\""
  end
  
  omnitruck_and_http = request_condition 'omnitruck_and_http' do
    statement "(req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" || req.url ~ \"^/chef/install.msi\") && !req.http.Fastly-SSL"
  end
  
  not_omitruck = request_condition 'not_omnitruck' do
    statement "!(req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" || req.url ~ \"^/chef/install.msi\")"
  end

  not_www_lb = request_condition 'not_www-lb' do
    statement "!(req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" ||  req.url ~ \"^/account\"||  req.url ~ \"^/blog\" || req.url ~ \"^/chef/install.msi\")"
  end
  
  # Backends
  backend 'chef-web-www-master.s3-website-us-east-1.amazonaws.com'
  
  backend 'www-lb.chef.io' do
    port 443
    use_ssl true
    request_condition all_www-lb
  end
  
  backend 'www-lb.chef.io_http' do
    hostname 'www-lb.chef.io'
    request_condition omnitruck_and_http
  end
  
  # Request Settings 
  
  request_setting 'proto_in_hash_key' do
    hash_keys 'req.url, req.http.host, req.http.Fastly-SSL'
  end
  
  request_setting 'force_ssl' do
    force_ssl true
    request_condition not_omnitruck
  end
  
  request_setting 's3_host_header' do
    default_host 'chef-web-www-master.s3-website-us-east-1.amazonaws.com'
    request_condition not_www_lb
  end
  
  # Cache Conditions
  account_mgmt = cache_condition 'account_mgmt' do
    statement 'req.url ~ "^/account"'
  end
  
  # Cache Settings
  cache_setting 'account_mgmt' do
    stale_ttl 0
    ttl 0
    action :pass
    cache_condition account_mgmt
  end
  
  # Response Conditions
  blog_and_301 = response_condition 'blog_and_301' do
    statement "req.http.host ~ \"^summit\" && resp.status == 301"
  end
  
  # Response Headers
  response_header 'blog.domain' do
    action :set
    destination 'http.location'
    source "\"https://www.chef.io/blog\" req.url"
    response_conditon blog_and_301
  end
  
end

fastly_try2.rb

chef_web_www_prod = fastly_service 'chef-web-www_prod' do
  action :create
  domain = [
    'blog.chef.io',
    'www.chef.io',
    'summit.chef.io'
  ]
end
  
# Request Conditions
all_www_lb = request_condition 'all_www-lb' do
  statement "req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" ||  req.url ~ \"^/account\"||  req.url ~ \"^/blog\" || req.url ~ \"^/chef/install.msi\""
  service chef_web_www_prod
end
  
omnitruck_and_http = request_condition 'omnitruck_and_http' do
  statement "(req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" || req.url ~ \"^/chef/install.msi\") && !req.http.Fastly-SSL"
  service chef_web_www_prod
end

not_omitruck = request_condition 'not_omnitruck' do
  statement "!(req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" || req.url ~ \"^/chef/install.msi\")"
  service chef_web_www_prod
end

not_www_lb = request_condition 'not_www-lb' do
  statement "!(req.url ~ \"^/chef/metadata\" || req.url ~ \"^/chef/metadata-server\" || req.url ~ \"^/chef/install.sh\" || req.url ~ \"^/chef/full_list\" || req.url ~ \"^/chef/full_client_list\" || req.url ~ \"^/chef/full_server_list\" || req.url ~ \"^/chef/chef_platform_names\" || req.url ~ \"^/chef/chef_server_platform_names\" || req.url ~ \"^/chef/download\" ||  req.url ~ \"^/account\"||  req.url ~ \"^/blog\" || req.url ~ \"^/chef/install.msi\")"
  service chef_web_www_prod
end

# Backends
backend 'chef-web-www-master.s3-website-us-east-1.amazonaws.com' do
  service chef_web_www_prod
end

backend 'www-lb.chef.io' do
  port 443
  use_ssl true
  request_condition all_www-lb
  service chef_web_www_prod
end

backend 'www-lb.chef.io_http' do
  hostname 'www-lb.chef.io'
  request_condition omnitruck_and_http
  service chef_web_www_prod
end

# Request Settings 

request_setting 'proto_in_hash_key' do
  hash_keys 'req.url, req.http.host, req.http.Fastly-SSL'
  service chef_web_www_prod
end

request_setting 'force_ssl' do
  force_ssl true
  request_condition not_omnitruck
  service chef_web_www_prod
end

request_setting 's3_host_header' do
  default_host 'chef-web-www-master.s3-website-us-east-1.amazonaws.com'
  request_condition not_www_lb
  service chef_web_www_prod
end

# Cache Conditions
account_mgmt = cache_condition 'account_mgmt' do
  statement 'req.url ~ "^/account"'
  service chef_web_www_prod
end

# Cache Settings
cache_setting 'account_mgmt' do
  action :pass
  stale_ttl 0
  ttl 0
  cache_condition account_mgmt
  service chef_web_www_prod
end

# Response Conditions
blog_and_301 = response_condition 'blog_and_301' do
  statement "req.http.host ~ \"^summit\" && resp.status == 301"
  service chef_web_www_prod
end

# Response Headers
response_header 'blog.domain' do
  action :set
  destination 'http.location'
  source "\"https://www.chef.io/blog\" req.url"
  response_conditon blog_and_301
  service chef_web_www_prod
end

I'm not familiar with how fastly works/is structured, so take this with a grain of salt.

This resource looks really overloaded from my pov. I'm not conceptually sure what a fastly_service is so maybe it all belongs in single resource but something along the lines of:

fastly_service 'my_service' do
   ...
end

fastly_backend 'backend01' do
  service 'my_service'
  ....
end

fastly_backend 'backend02' do
  service 'my_service'
  conditions [some, array]
  ...
end

fastly_request_setting 'req_set01' do
  conditions [some, array]
  ...
end

Again not knowing fastly that might or might not make sense, but I think the overall idea of smaller chunks leading to more grokable and composable resources stands even if that's a bad example.