config

type Configuration struct {
	// http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size
	// Sets the maximum allowed size of the client request body
	BodySize string `structs:"body-size,omitempty"`

	// HealthzURL defines the URL should be used in probes
	HealthzURL string

	// EnableDynamicTLSRecords enables dynamic TLS record sizes
	// https://blog.cloudflare.com/optimizing-tls-over-tcp-to-reduce-latency
	// By default this is enabled
	EnableDynamicTLSRecords bool `structs:"enable-dynamic-tls-records"`

	// EnableSPDY enables spdy and use ALPN and NPN to advertise the availability of the two protocols
	// https://blog.cloudflare.com/open-sourcing-our-nginx-http-2-spdy-code
	// By default this is enabled
	EnableSPDY bool `structs:"enable-spdy"`

	// EnableStickySessions enabled sticky sessions using cookies
	// https://bitbucket.org/nginx-goodies/nginx-sticky-module-ng
	// By default this is disabled
	EnableStickySessions bool `structs:"enable-sticky-sessions,omitempty"`

	// EnableVtsStatus allows the replacement of the default status page with a third party module named
	// nginx-module-vts - https://github.com/vozlt/nginx-module-vts
	// By default this is disabled
	EnableVtsStatus bool `structs:"enable-vts-status,omitempty"`

	VtsStatusZoneSize string `structs:"vts-status-zone-size,omitempty"`

	// RetryNonIdempotent since 1.9.13 NGINX will not retry non-idempotent requests (POST, LOCK, PATCH)
	// in case of an error. The previous behavior can be restored using the value true
	RetryNonIdempotent bool `structs:"retry-non-idempotent"`

	// http://nginx.org/en/docs/ngx_core_module.html#error_log
	// Configures logging level [debug | info | notice | warn | error | crit | alert | emerg]
	// Log levels above are listed in the order of increasing severity
	ErrorLogLevel string `structs:"error-log-level,omitempty"`

	// Enables or disables the header HSTS in servers running SSL
	HSTS bool `structs:"hsts,omitempty"`

	// Enables or disables the use of HSTS in all the subdomains of the servername
	// Default: true
	HSTSIncludeSubdomains bool `structs:"hsts-include-subdomains,omitempty"`

	// HTTP Strict Transport Security (often abbreviated as HSTS) is a security feature (HTTP header)
	// that tell browsers that it should only be communicated with using HTTPS, instead of using HTTP.
	// https://developer.mozilla.org/en-US/docs/Web/Security/HTTP_strict_transport_security
	// max-age is the time, in seconds, that the browser should remember that this site is only to be
	// accessed using HTTPS.
	HSTSMaxAge string `structs:"hsts-max-age,omitempty"`

	// enables which HTTP codes should be passed for processing with the error_page directive
	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_intercept_errors
	// http://nginx.org/en/docs/http/ngx_http_core_module.html#error_page
	// By default this is disabled
	CustomHTTPErrors []int `structs:"custom-http-errors,-"`

	// Time during which a keep-alive client connection will stay open on the server side.
	// The zero value disables keep-alive client connections
	// http://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout
	KeepAlive int `structs:"keep-alive,omitempty"`

	// Maximum number of simultaneous connections that can be opened by each worker process
	// http://nginx.org/en/docs/ngx_core_module.html#worker_connections
	MaxWorkerConnections int `structs:"max-worker-connections,omitempty"`

	// Sets the bucket size for the map variables hash tables.
	// Default value depends on the processor’s cache line size.
	// http://nginx.org/en/docs/http/ngx_http_map_module.html#map_hash_bucket_size
	MapHashBucketSize int `structs:"map-hash-bucket-size,omitempty"`

	// Defines a timeout for establishing a connection with a proxied server.
	// It should be noted that this timeout cannot usually exceed 75 seconds.
	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_connect_timeout
	ProxyConnectTimeout int `structs:"proxy-connect-timeout,omitempty"`

	// If UseProxyProtocol is enabled ProxyRealIPCIDR defines the default the IP/network address
	// of your external load balancer
	ProxyRealIPCIDR string `structs:"proxy-real-ip-cidr,omitempty"`

	// Timeout in seconds for reading a response from the proxied server. The timeout is set only between
	// two successive read operations, not for the transmission of the whole response
	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_read_timeout
	ProxyReadTimeout int `structs:"proxy-read-timeout,omitempty"`

	// Timeout in seconds for transmitting a request to the proxied server. The timeout is set only between
	// two successive write operations, not for the transmission of the whole request.
	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_send_timeout
	ProxySendTimeout int `structs:"proxy-send-timeout,omitempty"`

	// Sets the size of the buffer used for reading the first part of the response received from the
	// proxied server. This part usually contains a small response header.
	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size)
	ProxyBufferSize string `structs:"proxy-buffer-size,omitempty"`

	// Configures name servers used to resolve names of upstream servers into addresses
	// http://nginx.org/en/docs/http/ngx_http_core_module.html#resolver
	Resolver string `structs:"resolver,omitempty"`

	// Maximum size of the server names hash tables used in server names, map directive’s values,
	// MIME types, names of request header strings, etcd.
	// http://nginx.org/en/docs/hash.html
	// http://nginx.org/en/docs/http/ngx_http_core_module.html#server_names_hash_max_size
	ServerNameHashMaxSize int `structs:"server-name-hash-max-size,omitempty"`

	// Size of the bucket for the server names hash tables
	// http://nginx.org/en/docs/hash.html
	// http://nginx.org/en/docs/http/ngx_http_core_module.html#server_names_hash_bucket_size
	ServerNameHashBucketSize int `structs:"server-name-hash-bucket-size,omitempty"`

	// SkipAccessLogURLs sets a list of URLs that should not appear in the NGINX access log
	// This is useful with urls like `/health` or `health-check` that make "complex" reading the logs
	// By default this list is empty
	SkipAccessLogURLs []string `structs:"skip-access-log-urls,-"`

	// Enables or disables the redirect (301) to the HTTPS port
	SSLRedirect bool `structs:"ssl-redirect,omitempty"`

	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_buffer_size
	// Sets the size of the buffer used for sending data.
	// 4k helps NGINX to improve TLS Time To First Byte (TTTFB)
	// https://www.igvita.com/2013/12/16/optimizing-nginx-tls-time-to-first-byte/
	SSLBufferSize string `structs:"ssl-buffer-size,omitempty"`

	// Enabled ciphers list to enabled. The ciphers are specified in the format understood by
	// the OpenSSL library
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_ciphers
	SSLCiphers string `structs:"ssl-ciphers,omitempty"`

	// Base64 string that contains Diffie-Hellman key to help with "Perfect Forward Secrecy"
	// https://www.openssl.org/docs/manmaster/apps/dhparam.html
	// https://wiki.mozilla.org/Security/Server_Side_TLS#DHE_handshake_and_dhparam
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_dhparam
	SSLDHParam string `structs:"ssl-dh-param,omitempty"`

	// SSL enabled protocols to use
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_protocols
	SSLProtocols string `structs:"ssl-protocols,omitempty"`

	// Enables or disables the use of shared SSL cache among worker processes.
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache
	SSLSessionCache bool `structs:"ssl-session-cache,omitempty"`

	// Size of the SSL shared cache between all worker processes.
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache
	SSLSessionCacheSize string `structs:"ssl-session-cache-size,omitempty"`

	// Enables or disables session resumption through TLS session tickets.
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_tickets
	SSLSessionTickets bool `structs:"ssl-session-tickets,omitempty"`

	// Time during which a client may reuse the session parameters stored in a cache.
	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_timeout
	SSLSessionTimeout string `structs:"ssl-session-timeout,omitempty"`

	// Number of unsuccessful attempts to communicate with the server that should happen in the
	// duration set by the fail_timeout parameter to consider the server unavailable
	// http://nginx.org/en/docs/http/ngx_http_upstream_module.html#upstream
	// Default: 0, ie use platform liveness probe
	UpstreamMaxFails int `structs:"upstream-max-fails,omitempty"`

	// Time during which the specified number of unsuccessful attempts to communicate with
	// the server should happen to consider the server unavailable
	// http://nginx.org/en/docs/http/ngx_http_upstream_module.html#upstream
	// Default: 0, ie use platform liveness probe
	UpstreamFailTimeout int `structs:"upstream-fail-timeout,omitempty"`

	// Enables or disables the use of the PROXY protocol to receive client connection
	// (real IP address) information passed through proxy servers and load balancers
	// such as HAproxy and Amazon Elastic Load Balancer (ELB).
	// https://www.nginx.com/resources/admin-guide/proxy-protocol/
	UseProxyProtocol bool `structs:"use-proxy-protocol,omitempty"`

	// Enables or disables the use of the nginx module that compresses responses using the "gzip" method
	// http://nginx.org/en/docs/http/ngx_http_gzip_module.html
	UseGzip bool `structs:"use-gzip,omitempty"`

	// Enables or disables the HTTP/2 support in secure connections
	// http://nginx.org/en/docs/http/ngx_http_v2_module.html
	// Default: true
	UseHTTP2 bool `structs:"use-http2,omitempty"`

	// MIME types in addition to "text/html" to compress. The special value “*” matches any MIME type.
	// Responses with the “text/html” type are always compressed if UseGzip is enabled
	GzipTypes string `structs:"gzip-types,omitempty"`

	// WhitelistSourceRange allows limiting access to certain client addresses
	// http://nginx.org/en/docs/http/ngx_http_access_module.html
	WhitelistSourceRange []string `structs:"whitelist-source-range,omitempty"`

	// Defines the number of worker processes. By default auto means number of available CPU cores
	// http://nginx.org/en/docs/ngx_core_module.html#worker_processes
	WorkerProcesses string `structs:"worker-processes,omitempty"`
}