Support NPM installation switch

Author: Mike Zhu

attributes/default.rb

@@ -367,6 +367,13 @@
 default['datadog']['system_probe']['debug_port'] = 0
 default['datadog']['system_probe']['bpf_debug'] = false
 default['datadog']['system_probe']['enable_conntrack'] = false
+# Enable this switch will install NPM driver and sysprobe, as well as generate the config file.
+# Turning on this setting will effectively turn on the settings automatically:
+# ['datadog']['extra_config']['system_probe']['network_enabled']
+# ['datadog']['system_probe']['enabled']
+default['datadog']['system_probe']['network_enabled'] = false
+# enable this switch will turn on network monitoring in system_probe.yaml file.
+default['datadog']['extra_config']['system_probe']['network_enabled'] = nil
 
 # Logs functionality settings (Agent 6/7 only)
 # Set `enable_logs_agent` to:

libraries/recipe_helpers.rb

@@ -95,7 +95,7 @@ def ddagentuser_password(node)
       end
 
       def npm_install(node)
-        run_state_or_attribute(node, 'windows_npm_install')
+        run_state_or_attribute(node, 'windows_npm_install') || run_state_or_attribute_system_probe(node, 'network_enabled')
       end
 
       def cookbook_version(run_context)
@@ -130,6 +130,14 @@ def run_state_or_attribute(node, attribute)
           node['datadog'][attribute]
         end
       end
+
+      def run_state_or_attribute_system_probe(node, attribute)
+        if node.run_state.key?('datadog') && node.run_state['datadog'].key?('system_probe') && node.run_state['datadog']['system_probe'].key?(attribute)
+          node.run_state['datadog']['system_probe'][attribute]
+        else
+          node['datadog']['system_probe'][attribute]
+        end
+      end
     end
 
     module WindowsInstallHelpers

recipes/_install-windows.rb

@@ -105,7 +105,7 @@ def unmute_host(context)
   install_options.concat(' DDAGENTUSER_NAME=%DDAGENTUSER_NAME%') if ddagentuser_name
   install_options.concat(' DDAGENTUSER_PASSWORD=%DDAGENTUSER_PASSWORD%') if ddagentuser_password
 
-  install_options.concat(" NPM=#{dd_agent_install_npm}") if dd_agent_install_npm
+  install_options.concat(" ADDLOCAL=MainApplication,NPM") if dd_agent_install_npm
 end
 
 package 'Datadog Agent removal' do

recipes/dd-agent.rb

@@ -158,11 +158,12 @@ def template_vars
 
 system_probe_managed = node['datadog']['system_probe']['manage_config']
 agent_version_greater_than_6_11 = agent_major_version > 5 && (agent_minor_version.nil? || agent_minor_version > 11) || agent_major_version > 6
+agent_version_greater_than_7_26 = agent_major_version > 6 && (agent_minor_version.nil? || agent_minor_version > 26) || agent_major_version > 7
 
-# System probe requires at least agent 6.12, before that it was called the network-tracer
-system_probe_supported = agent_version_greater_than_6_11 && !is_windows
+# System probe requires at least agent 6.12 on Linux or 7.27 on Windows, before that it was called the network-tracer or unsupported.
+system_probe_supported = (agent_version_greater_than_6_11 && !is_windows) || (agent_version_greater_than_7_26 && is_windows)
 
-# system-probe is a dependency of the agent on Linux
+# system-probe is a dependency of the agent on Linux or Windows
 include_recipe 'datadog::system-probe' if system_probe_managed && system_probe_supported
 
 # Installation metadata to let know the agent about installation method and its version

recipes/system-probe.rb

@@ -17,13 +17,21 @@
 # limitations under the License.
 #
 
+is_windows = platform_family?('windows')
+
 # Set the correct agent startup action
-sysprobe_enabled = node['datadog']['system_probe']['enabled']
+sysprobe_enabled = node['datadog']['system_probe']['enabled'] || node['datadog']['system_probe']['network_enabled']
 sysprobe_agent_start = sysprobe_enabled ? :start : :stop
 
 #
 # Configures system-probe agent
-system_probe_config_file = '/etc/datadog-agent/system-probe.yaml'
+system_probe_config_file =
+  if is_windows
+    'C:/ProgramData/Datadog/system-probe.yaml'
+  else
+    '/etc/datadog-agent/system-probe.yaml'
+  end
+
 system_probe_config_file_exists = ::File.exist?(system_probe_config_file)
 
 template system_probe_config_file do
@@ -35,21 +43,34 @@
     end
   end
 
+  if node['datadog']['system_probe']['network_enabled']
+    # if network monitoring need to be enabled, enable it in the config yaml file.
+    extra_config['network_enabled'] = true
+  end
+
   source 'system_probe.yaml.erb'
   variables(
-    enabled: node['datadog']['system_probe']['enabled'],
+    enabled: sysprobe_enabled,
     sysprobe_socket: node['datadog']['system_probe']['sysprobe_socket'],
     debug_port: node['datadog']['system_probe']['debug_port'],
     bpf_debug: node['datadog']['system_probe']['bpf_debug'],
     enable_conntrack: node['datadog']['system_probe']['enable_conntrack'],
     extra_config: extra_config
   )
-  owner 'root'
-  group 'dd-agent'
-  mode '640'
-  notifies :restart, 'service[datadog-agent-sysprobe]', :delayed if node['datadog']['system_probe']['enabled']
+
+  if is_windows
+    owner 'Administrators'
+    rights :full_control, 'Administrators'
+    inherits false
+  else
+    owner 'root'
+    group 'dd-agent'
+    mode '640'
+  end
+
+  notifies :restart, 'service[datadog-agent-sysprobe]', :delayed if sysprobe_enabled
   # since process-agent collects network info through system-probe, enabling system-probe should also restart process-agent
-  notifies :restart, 'service[datadog-agent]', :delayed if node['datadog']['system_probe']['enabled']
+  notifies :restart, 'service[datadog-agent]', :delayed if sysprobe_enabled
 
   # System probe is not enabled and the file doesn't exists, don't create it
   not_if { !sysprobe_enabled && !system_probe_config_file_exists }
@@ -58,9 +79,19 @@
 # Common configuration
 service_provider = Chef::Datadog.service_provider(node)
 
+service_name = is_windows ? 'datadog-system-probe' : 'datadog-agent-sysprobe'
+
 service 'datadog-agent-sysprobe' do
+  service_name service_name
   action [sysprobe_agent_start]
   provider service_provider unless service_provider.nil?
+  if is_windows
+    supports :restart => true, :start => true, :stop => true
+    restart_command "powershell restart-service #{service_name} -Force"
+    stop_command "powershell stop-service #{service_name} -Force"
+  else
+    supports :restart => true, :status => true, :start => true, :stop => true
+  end
   supports :restart => true, :status => true, :start => true, :stop => true
-  subscribes :restart, "template[#{system_probe_config_file}]", :delayed if node['datadog']['system_probe']['enabled']
+  subscribes :restart, "template[#{system_probe_config_file}]", :delayed if sysprobe_enabled
 end

templates/default/system_probe.yaml.erb

@@ -1,13 +1,13 @@
 <%
 ## Populate system_probe_config ##
 system_probe_config = {
-  system_probe_config: @extra_config.merge({
-    enabled: node['datadog']['system_probe']["enabled"],
-    sysprobe_socket: node['datadog']['system_probe']['sysprobe_socket'],
-    debug_port: node['datadog']['system_probe']['debug_port'],
-    bpf_debug: node['datadog']['system_probe']['bpf_debug'],
-    enable_conntrack: node['datadog']['system_probe']['enable_conntrack'],
-  })
+  system_probe_config: {
+    enabled: @enabled,
+    sysprobe_socket: @sysprobe_socket,
+    debug_port: @debug_port,
+    bpf_debug: @bpf_debug,
+    enable_conntrack: @enable_conntrack,
+  }.merge(@extra_config)
 }
 -%>
 # Generated by Chef, local modifications will be overwritten