Add parameters support

providers/default.rb

@@ -21,6 +21,14 @@ def service_installed?(servicename)
     not_if { service_installed }
   end
 
+  new_resource.params.map do |k, v|
+    batch "Set parameter #{k} #{v}"  do
+      code <<-EOH
+        nssm set "#{new_resource.servicename}" #{k} #{v}
+      EOH
+    end
+  end unless service_installed
+
   if new_resource.start
     service new_resource.servicename do
       action [:start]

resources/default.rb

@@ -4,4 +4,5 @@
 attribute :servicename, name_attribute: true
 attribute :program, kind_of: String, required: true
 attribute :args, kind_of: String
-attribute :start,  kind_of: [TrueClass, FalseClass], default: true
+attribute :params, kind_of: Hash, default: {}
+attribute :start, kind_of: [TrueClass, FalseClass], default: true

spec/unit/install_service_spec.rb

@@ -25,6 +25,30 @@
     )
   end
 
+  it 'sets start directory parameters' do
+    expect(chef_run).to run_batch('Set parameter AppDirectory C:/path/to').with(
+      code: %r{nssm set "service name" AppDirectory C:/path/to}
+    )
+  end
+
+  it 'sets service parameters' do
+    expect(chef_run).to run_batch('Set parameter AppStdout C:/path/to/log/service.log').with(
+      code: %r{nssm set "service name" AppStdout C:/path/to/log/service.log}
+    )
+  end
+
+  it 'sets service parameters' do
+    expect(chef_run).to run_batch('Set parameter AppStderr C:/path/to/log/error.log').with(
+      code: %r{nssm set "service name" AppStderr C:/path/to/log/error.log}
+    )
+  end
+
+  it 'sets service parameters' do
+    expect(chef_run).to run_batch('Set parameter AppRotateFiles 1').with(
+      code: /nssm set "service name" AppRotateFiles 1/
+    )
+  end
+
   it 'starts service' do
     expect(chef_run).to start_service('service name')
   end

test/fixtures/cookbooks/nssm_test/recipes/install_service.rb

@@ -1,5 +1,11 @@
 nssm 'service name' do
   program 'C:\\Windows\\System32\\java.exe'
   args '-jar C:/path/to/my-executable.jar'
+  params(
+    AppDirectory: 'C:/path/to',
+    AppStdout: 'C:/path/to/log/service.log',
+    AppStderr: 'C:/path/to/log/error.log',
+    AppRotateFiles: 1
+  )
   action :install
 end