Flow variables reference

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This section provides reference information about the flow variables.

Apigee Edge defines the following flow variables:

apigee              loadbalancing        router
apiproxy            message              servicecallout
application         messageid            system
client              organization         target
current             proxy                variable
environment         request              virtualhost
error               response
is                  route

Each of these variables is described in the sections that follow.

apigee

A helper variable that provides information about execution time of the policy.

The following table describes the properties of the apigee variable:

Property Type Read/Write Description Scope begins
apigee.metrics.policy.policy_name.timeTaken Integer Read only The time, in nanoseconds, that the policy took to execute. Policy

apiproxy

Describes the API proxy.

The following table describes the properties of the apiproxy variable:

Property Type Read/Write Description Scope begins
apiproxy.name String Read only Name of the API proxy. For example, "My Proxy". Proxy request
apiproxy.revision String Read only The revision number of an API proxy. For example, "6". Proxy request

For more information on working with API proxies, see Understanding APIs and API proxies.

application

A container for the application.basepath property.

The following table describes the properties of the application variable:

Property Type Read/Write Description Scope begins
application.basepath String Read only The deployment base path (specified during API deployment). Proxy request

client

The application or system that sent a request to the Edge router.

The following table describes the properties of the client variable:

Property Type Read/Write Description Scope begins
client.cn String Read only

The common name specified in the TLS/SSL certificate presented by the client app.

 Proxy request
client.country String Read only

The country in the TLS/SSL certificate presented by the client app.

 Proxy request
client.email.address String Read only

The email address in the TLS/SSL certificate presented by the client app.

 Proxy request
client.host String Read only

The HTTP host IP associated with the request received by the ProxyEndpoint.

 Proxy request
client.ip String Read only

The IP address of the client or system sending the message to the Edge router. For example, this could be the original client IP or a load balancer IP.

 Proxy request
client.locality String Read only

The locality (City) in the TLS/SSL certificate presented by the client.

 Proxy request
client.organization String Read only The organization in the TLS/SSL certificate presented by the client. (Not necessarily equivalent to the organization on Apigee Edge.) Proxy request
client.organization.unit String Read only

The organizational unit in the TLS/SSL certificate presented by the client.

 Proxy request
client.port Integer Read only

The HTTP port associated with the originating client request to the ProxyEndpoint.

 Proxy request
client.received.end.time String Read only

The time, expressed in string form, at which the proxy finished receiving the request from the originating client at the ProxyEndpoint. For example: Wed, 21 Aug 2013 19:16:47 UTC.

This time value is the string representation of the corresponding 32-bit timestamp quantity. For example, 'Wed, 21 Aug 2013 19:16:47 UTC' corresponds to the timestamp value of 1377112607413.

 Proxy request
client.received.end.timestamp Long Read only

The timestamp value specifying when the proxy finished receiving the request from the originating client at the ProxyEndpoint. This value is a 64-bit (long) integer containing the number of milliseconds elapsed since midnight, on January 1, 1970 UTC.

 Proxy request
client.received.start.time String Read only

The time, expressed in string form, at which the proxy began receiving the request from the originating client at the ProxyEndpoint. For example: Wed, 21 Aug 2013 19:16:47 UTC

This time value is the string representation of the corresponding 32-bit timestamp quantity. For example, 'Wed, 21 Aug 2013 19:16:47 UTC' corresponds to the timestamp value of 1377112607413.

 Proxy request
client.received.start.timestamp Long Read only

The timestamp value specifying when the proxy began receiving the request from the originating client at the ProxyEndpoint. This value is a 64-bit (long) integer containing the number of milliseconds elapsed since midnight, on January 1, 1970 UTC.

 Proxy request
client.scheme String Read only

Returns http or https depending on the transport used by client app to send the request message.

 Proxy request
client.sent.end.time String Read only

The time, expressed in string form, at which the proxy finished sending the response from the ProxyEndpoint to the client. For example: "Wed, 21 Aug 2013 19:16:47 UTC".

This value is a string representation of the corresponding 32-bit client.sent.end.timestamp. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of 1377112607413.

 PostClientFlow
client.sent.end.timestamp Long Read only The timestamp value specifying when the ProxyEndpoint finished returning the response to the originating client app. This value is a 64-bit (long) integer containing the number of milliseconds elapsed since midnight, on January 1, 1970 UTC. PostClientFlow
client.sent.start.time String Read only The time, expressed in string form, when the ProxyEndpoint started returning the response to the originating client app. For example, "Wed, 21 Aug 2013 19:16:47 UTC".

This value is a string representation of the corresponding 32-bit client.sent.start.timestamp. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of 1377112607413.

 PostClientFlow
client.sent.start.timestamp Long Read only When the proxy began sending the response to the client from the ProxyEndpoint. This value is expressed as a 64-bit (long) integer containing the number of milliseconds elapsed since midnight, on January 1, 1970 UTC. PostClientFlow
client.ssl.enabled String Read only

"true" if the ProxyEndpoint is configured for TLS/SSL; otherwise "false".

 Proxy request
client.state String Read only

The state in the TLS/SSL certificate presented by the client.

 Proxy request

current

Contains information about the current API proxy flow.

The following table describes the properties of the current variable:

Property Type Read/Write Description Scope begins
current.flow.name String Read only The name of the flow that is currently executing (such as "PreFlow", "PostFlow", or the name of a conditional flow). Proxy request
current.flow.description String Read only The description of the currently executing flow. This is the same as the value of the <Description> element in the flow's XML configuration. Proxy request

You can view these properties in the Edge UI's Trace view. However, these properties are not visible by default in the Classic UI's Trace view.

environment

A container for the environment.name property.

The following table describes the properties of the environment variable:

Property Type Read/Write Description Scope begins
environment.name String Read only Name of the environment in which the transaction ran. Proxy request

error

A contextual object that represents an error message in the error flow.

The following table describes the properties of the error variable:

Property Type Read/Write Description Scope begins
error message Read/Write Error of type message, which is a contextual object in the error flow. Error
error.content String Read/Write Content of the error. Error
error.message String Read only

Message associated with an error, whose value is available only before the error Flow is executed.

 Error
error.status.code Integer Read only

The HTTP status code associated with the error. For example, "400".

 Error
error.reason.phrase String Read only

The reason phrase associated with the error. For example: "Bad Request".

 Error
error.transport.message TransportMessage Read only

Any error of type TransportMessage.

 Error
error.state Integer Read only

State in the Flow where an error occurred.

 Error
error.header.header_name String Read/Write

Get or set the response header.

 Error

fault

A flow variable that is set to a runtime error code when a policy throws an error. Error code values are specific to each policy.

Property Type Read/Write Description Scope begins
fault.fault_name String Read only fault_name is the name of the fault, as described in the Runtime errors table included in each policy reference topic. Error

is

A container for the is.error property.

The following table describes the properties of the is variable:

Property Type Read/Write Description Scope begins
is.error Boolean Read only

Error flag.

 Proxy request

loadbalancing

Provides information about the TargetEndpoint's load balancing status.

The following table describes the properties of the loadbalancing variable:

Property Type Read/Write Description Scope begins
loadbalancing.failedservers Array of Strings Read only

List of failed TargetServers during load balancing at TargetEndpoint.

 Target response
loadbalancing.isfallback Boolean Read only

"true" if fallback is enabled for the TargetServer invoked during load balancing at TargetEndpoint.

 Target response
loadbalancing.targetserver String Read only

TargetServer invoked during load balancing at TargetEndpoint. Set only if the <Path> element is set while defining the load balancer element.

 Target response

message

A contextual object, with the same value as request in the request flow or as response in the response flow or as error in the error flow.

The following table describes the properties of the message variable:

Property Type Read/Write Description Scope begins
message message Read/Write

A contextual object, with the same value as request in the request Flow or as response in the response Flow or as error in the Error flow.

 Proxy request
message.content String Read/Write

Content of the request, response, or error message.

 Proxy request
message.formparam.param_name String Read/Write

Value of the specified form parameter.

 Proxy request
message.formparam.param_name.
 values		 Collection Read only

All values of the specified form parameter in the message.

 Proxy request
message.formparam.param_name.
 values.count		 Integer Read only

Count of the values of the specified form parameters in the message./p>

Proxy request
message.formparams.count Integer Read only

Count of all form parameters in the message.

 Proxy request
message.formparams.names Collection Read only

Value of all form parameters in the message.

 Proxy request
message.formstring String Read only

Value of form string in the message.

 Proxy request
message.header.header_name String Read/Write

Gets or sets the value of the specified HTTP header in the message. If the header contains a comma, upon read you will receive only the segment of the text up to the first comma. If you want the entire header, use the form request.header.header_name.
 values

 Proxy request
message.header.header_name.N String Read/Write

The value of the Nth particular header value in the message, either request or response, depending on the state of the flow. Apigee Edge splits header text values by commas. Note that the index whose value is used for N is 1-based, not 0-based.

For example: if the Cache-control header is "public,maxage=16544", then the return value of message.header.cache-control.1 is "maxage=16544".

 Proxy request
message.header.header_name.
 values		 Collection Read only

All values of the specified HTTP header name in the message.

 Proxy request
message.header.header_name.
 values.count		 Integer Read only

Count of the values of the specified HTTP header name in the message.

 Proxy request
message.headers.count Integer Read only

Count of all HTTP headers in the message.

 Proxy request
message.headers.names Collection Read only

Value of all HTTP headers in the message

 Proxy request
message.path String Read/Write

The complete request message path in URL excluding any query parameters.

Proxy request
message.queryparam.param_name String Read only

Returns the specified message query parameter.

 Proxy request
message.queryparam.param_name.N String Read/Write

The value of the Nth query parameter in the message. For example, if the request.querystring is "a=hello&a=world", then the return value of message.queryparam.a.1 is "hello".

As an example of writing multiple values for a single query parameter name, such as "type=siteid:1&type=language:us-en&type=currency:USD", set the following:

  • message.queryparam.type.1 to "siteid:1"
  • message.queryparam.type.2 to "language:en-us"
  • message.queryparam.type.3 to "currency:USD"
 Proxy request
message.queryparam.param_name.
 values		 Collection Read only

All the values of a particular query parameter in the message, formatted as a comma-separated list.

For example, if the query string is a=hello&a=world, then the value of message.queryparam.a.values is "['hello', 'world']".

 Proxy request
message.queryparam.param_name.
 values.count		 Integer Read only

The total count of a specified query parameter associated with the request sent to the ProxyEndpoint from the client app.

 Proxy request
message.queryparams.count Integer Read only

The total count of all query parameters associated with the request sent to the ProxyEndpoint from the client app.

 Proxy request
message.queryparams.names Collection Read only

A list of all query parameter names associated with the request sent to the ProxyEndpoint from the client app.

To iterate over the query parameter names using JavaScript, see the following Apigee Community post: How do you iterate Collection from "request.queryparams.names" in JS? in the Apigee Community.

 Proxy request
message.querystring String Read only

A string containing all query parameter names and values associated with the request sent to the ProxyEndpoint from the client app.

For example, for the request "http://api.apifactory.com/inventors?name=nick&surname=danger", the value of message.querystring is "name=nick&surname=danger".

 Proxy request
message.reason.phrase String Read only

ReasonPhrase of the response message from target.

 Target response
message.status.code Integer Read only

HTTP status code of the response message from target.

 Target response
message.transport.message TransportMessage Read only

Message of type TransportMessage which is a contextual object.

 Proxy request
message.uri String Read only

The complete URI path (following the domain URL) including query parameters.

For example, for the request "http://api.apifactory.com/inventors?name=nikola&surname=tesla", this variable returns "inventors?name=nikola&surname=tesla".

 Proxy request
message.verb String Read only

The HTTP verb (GET, PUT, POST, DELETE, etc.) associated with the request.

 Proxy request
message.version String Read/Write

The HTTP version associated with the request sent to the ProxyEndpoint from the client application.

 Proxy request

For more information on messages, see Message template function reference.

messageid

A container for the globally unique ID for the request.

The following table describes the properties of the messageid variable:

Property Type Read/Write Description Scope begins
messageid String Read only

Holds the globally unique ID for the request, which includes the router host name. This ID allows requests received at the router to be tracked after they are sent to the message processor.

This ID is logged in Edge error logs to correlate the messageid with the errors.

 Proxy request

organization

A container for the organization.name property.

The following table describes the properties of the organization variable:

Property Type Read/Write Description Scope begins
organization.name String Read only

Name of the organization.

 Proxy request

For more information on organizations, see Understanding organizations.

proxy

The API proxy configuration.

The following table describes the properties of the proxy variable:

Property Type Read/Write Description Scope begins
proxy.basepath String Read only

The value of the Base Path in your API proxy configuration. The base path is the URI fragment that follows the host in the URL. Conditional flow URIs follow the base path.

In the URL "http://myorg-test.apigee.net/v2/weatherapi/forecastrss?w=12797282":

  • Host is "myorg-test.apigee.net" (which includes the organization name and environment)
  • Base path is "/v2/weatherapi"

The only way you'd know this is by looking at the API proxy definition or checking the value of the proxy.basepath variable. The proxy path suffix follows the base path ("/forecastrss"), along with any query parameters.

If you define a dynamic Base Path in your API proxy configuration, such as "/v2/*/weatherapi", then this variable is set to the dynamic path ("/v2/*/weatherapi"), even though the base path resolves to a static value, such as "/v2/foo/weatherapi".

 Proxy request
proxy.client.ip String Read only

The X-Forwarded-For address of the inbound call, which is the IP address Edge received from the last external TCP handshake. This could be the calling client or a load balancer.

 Proxy request
proxy.name String Read only

The name attribute configured for the ProxyEndpoint.

 Proxy request
proxy.pathsuffix String Read only

The value of API proxy basepath suffix that is sent from the client and received at the ProxyEndpoint.

The basepath is defined as the path component that uniquely identifies the API proxy. The public-facing URL of an API proxy is comprised of your organization name, the environment where the proxy is deployed, the basepath, the basepath suffix, and any query parameters.

For example, in a request to http://myorg-test.apigee.net/v2/weatherapi/forecastrss?w=12797282, the basepath suffix is "/forecastrss".

 Proxy request
proxy.url String Read only

Gets the complete URL associated with the proxy request received by the ProxyEndpoint, including any query parameters present. The host of the URL will always be localhost if the proxy is invoked with <LocalTargetConnection> to perform proxy chaining.

For an example that constructs a request URL using the original host, see Access request messages.

 Proxy request

For more information on working with API proxies, see Understanding APIs and API proxies.

request

The complete request, including any payload present.

For more information about request data, see How is request data passed to the backend server?

The following table describes the properties of the request variable:

Property Type Read/Write Description Scope begins
request message Read only

The complete request, including any payload present.

 Proxy request
request.content String Read/Write

Gets or sets the payload of the request message.

 Proxy request
request.formparam.param_name String Read/Write

Gets or sets the value of the specified form parameter in the request sent from the client application.

 Proxy request
request.formparam.param_name.
 values		 Collection Read only

All the values of a particular form parameter in the request, formatted as a comma-separated list.

For example, if the payload is "a=hello&x=greeting&a=world", then the value of request.formparam.a.values is "['hello', 'world']".

 Proxy request
request.formparam.param_name.
 values.count		 Integer Read only

Count of all values for the specified form parameter associated with the request.

 Proxy request
request.formparam.param_name.N String Read/Write

The value of the Nth particular form parameter in the message. For example, if the form string is "a=hello&a=world", then the return value of request.formparam.a.1 is "hello".

 Proxy request
request.formparams.count Integer Read only

Count of all form parameters associated with the request sent from the client application.

 Proxy request
request.formparams.names Collection Read only

A list of all form parameter names associated with the request.

 Proxy request
request.formstring String Read only

The complete formparam in the request sent from the client app.

For example, "name=test&type=first&group=A".

 Proxy request
request.header.header_name String Read/Write

Gets or sets the value of a particular header found in the request. If the header contains a comma, upon read you will receive only the segment of the text up to the first comma.

If you want the entire header, use the form request.header.header_name.values.

 Proxy request
request.header.header_name.N String Read/Write

The value of the Nth particular header value in the request. Apigee Edge splits header text values by commas. Note that the index whose value is used for N is 1-based, not 0-based.

For example, if the Cache-control header is "public, maxage=16544", then the return value of request.header.cache-control.1 is "maxage=16544".

 Proxy request
request.header.header_name.
 values		 Collection Read only

All the values of a particular header in the request.

 Proxy request
request.header.header_name.
 values.count		 Integer Read only

Count of all the values of a particular header in the request.

 Proxy request
request.headers.count Integer Read only

Count of all the headers in the request.

 Proxy request
request.headers.names Collection Read only

Names of all the headers in the request.

 Proxy request
request.path String Read only

The un-proxied resource path (not including the host) to the backend service, excluding query parameters.

For example, of the URI to the backend service is "https://example.com/rest/api/latest", then the value of request.path is "/rest/api/latest".

 Proxy request
request.queryparam.param_name String Read/Write

The value of a particular query parameter found in the request.

 Proxy request
request.queryparam.param_name.N String Read/Write

The value of the Nth query parameter in the request.

For example, if the request.querystring is "a=hello&a=world", then the return value of is request.queryparam.a.1 is "hello".

As an example of writing multiple values for a single query parameter name, such as "type=siteid:1&type=language:us-en&type=currency:USD", set the following:

  • request.queryparam.type.1 to "siteid:1"
  • request.queryparam.type.2 to "language:en-us"
  • request.queryparam.type.3 to "currency:USD"
 Proxy request
request.queryparam.param_name.
 values		 Collection Read only

All the values of a particular query parameter in the request, formatted as a comma-separated list.

For example, if request.querystring is "a=hello&b=lovely&a=world", then the value of request.queryparam.a.values is "['hello', 'world']".

 Proxy request
request.queryparam.param_name.
 values.count		 Integer Read only

The count of all the values of a particular query parameter in the request.

 Proxy request
request.queryparams.count Integer Read only

The count of all the query parameters in the request.

 Proxy request
request.queryparams.names Collection Read only

The names of all the query parameters in the request.

To iterate over the query parameter names using JavaScript, see How do you iterate Collection from "request.queryparams.names" in JS? in the Apigee Community.

 Proxy request
request.querystring String Read only

The complete list of query parameters in the request sent from the client app.

For example, if the request is "http://host.com/123?name=first&surname=second&place=address", then this variable returns "name=first&surname=second&place=address".

 Proxy request
request.transportid String Read only

ID of the request as type TransportMessage which is a contextual object.

 Proxy request
request.transport.message Transport-Message Read only

Request of type TransportMessage which is a contexual object.

 Proxy request
request.uri String Read only

In an API proxy, the proxy <BasePath> in the ProxyEndpoint (in addition to the proxy's base URL) maps to the target service URL in the TargetEndpoint. For example:

<ProxyEndpoint>
...
  <BasePath>/my-mock-proxy</BasePath>

Points to

<TargetEndpoint>
...
  <HTTPTargetConnection>
    http://mocktarget.apigee.net
  </HTTPTargetConnection>

In the request, request.uri is the proxy base path + the remainder of the address, including query parameters.

In the response, request.uri is the remainder of the address, including query parameters, after the HTTPTargetConnection.

The difference is because the original request came into the proxy, but then the proxy makes another request to the target service.

Let's say the following call is made to our sample proxy, which has a base path of "/my-mock-proxy":

http://my_org-test.apigee.net/my-mock-proxy/user?user=Dude

And the proxy calls:

http://mocktarget.apigee.net

Which appends "/user?user=Dude" to that URL.

  • Request: request.uri = "/my-mock-proxy/user?user=Dude"
  • Response: request.uri = "/user?user=Dude"
 Proxy request (differs in the response)
request.url String Read only

The complete URL of the request made to the target endpoint, including the query string parameters, but not including the port number (if specified).

For example, if you make a call to a sample proxy "http://my_org-test.apigee.net/my-mock-proxy/user?user=Dude", and the target endpoint is "http://example.com:8080", then the value is:

  • Request: n/a
  • Response: "http://example.com/user?user=Dude"
 Target response
request.verb String Read only

The HTTP verb used for the request. For example, "GET", "PUT", and "DELETE".

 Proxy request
request.version String Read only

The HTTP version of the request. For example, "1.1".

 Proxy request

response

The complete response, including any payload present.

The following table describes the properties of the response variable:

Property Type Read/Write Description Scope begins
response message Read/Write

Complete response message returned by target.

 Target response
response.content String Read/Write

Payload content of the response message returned by the target.

 Target response
response.formparam.param_name String Read/Write

The value of a form parameter in the response.

 Target response
response.formparam.param_name.
 values.count		 Integer Read only

Count of all the values of the specified form parameter in response.

 Target response
response.formparams.count Integer Read only

Count of all form prameters in the response.

 Target response
response.formparams.names Collection Read only

The names of all the form parameters in the response.

 Target response
response.header.header_name String Read/Write

Gets or sets the value of a specified HTTP header in the response.

If the header text includes a comma, Apigee Edge infers multiple values. In this case, response.header.header_name returns the first value only.

To read the entire header, use the form response.header.header_name.values.

 Target response
response.header.header_name.
 values		 Collection Read only

All the values of a specified HTTP header in response.

 Target response
response.header.header_name.
 values.count		 Integer Read only

Count of all the values of the specified HTTP header in response.

 Target response
response.header.header_name.N String Read/Write

The value of the Nth particular header value in the response. Apigee Edge splits header text values by commas. Note that the index whose value is used for N is 1-based, not 0-based.

For example, if the Cache-control header is "public, maxage=16544", then response.header.cache-control.1 returns "maxage=16544".

 Target response
response.headers.count Integer Read only

Count of all the headers in the response.

 Target response
response.headers.names Collection Read only

The names of all the headers in the response.

 Target response
response.reason.phrase String Read/Write

The response reason phrase for a particular request.

 Target response
response.status.code Integer Read/Write

The response code returned for a request. You can use this variable to override the response status code, which is stored in message.status.code. For more, see message.

 Target response
response.transport.message String Read only

Response of type TransportMessage which is a contexual object.

 Target response

route

Specifies the names of the <RouteRule> and TargetEndpoint.

The following table describes the properties of the route variable:

Property Type Read/Write Description Scope begins
route.name String Read only

The name of the <RouteRule> that was executed in the ProxyEndpoint. For example, "default". A RouteRule references an API proxy TargetEndpoint to execute.

 Target request
route.target String Read only

The name of the TargetEndpoint that was executed. For example, "default".

 Target request

router

A container for the router.uuid property, which is deprecated.

The following table describes the properties of the router variable:

Property Type Read/Write Description Scope begins
router.uuid String Read only

Deprecated and returns null. (Formerly the UUID of the router handling the proxy.)

 Proxy request

servicecallout

Describes the TargetEndpoint for a ServiceCallout policy.

The following table describes the properties of the servicecallout variable:

Property Type Read/Write Description Scope begins
servicecallout.policy_name.expectedcn String Read/Write

The expected Common Name of the TargetEndpoint as referred to in a ServiceCallout policy policy. This is meaningful only when the TargetEndpoint refers to a TLS/SSL endpoint.

 Proxy request
servicecallout.policy_name.target.url String Read/Write

The TargetEndpoint URL for a particular ServiceCallout policy.

 Proxy request
servicecallout.requesturi String Read/Write

The TargetEndpoint URI for a ServiceCallout policy policy. The URI is the TargetEndpoint URL without the protocol and domain specification.

 Proxy request

system

Specifies the IP address of the system, as well as details about the proxy.

The following table describes the properties of the system variable:

Property Type Read/Write Description Scope begins
system.interface.interface_name String Read only

IP address of the system.

 Proxy request
system.pod.name String Read only

The name of the pod where the proxy is running.

 Proxy request
system.region.name String Read only

The name of the data center region where the proxy is running.

 Proxy request
system.time String Read only

The time when this variable was read. For example, "Wed, 21 Aug 2013 19:16:47 UTC".

This value is the string representation of the corresponding value of system.timestamp. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of "1377112607413".

 Proxy request
system.time.year Integer Read only

The year portion of system.time.

 Proxy request
system.time.month Integer Read only

The month portion of system.time.

 Proxy request
system.time.day Integer Read only

The day of month portion of system.time.

 Proxy request
system.time.dayofweek Integer Read only

The day of the week portion of system.time.

 Proxy request
system.time.hour Integer Read only

The hour portion of system.time.

 Proxy request
system.time.minute Integer Read only

The minute portion of system.time.

 Proxy request
system.time.second Integer Read only

The second portion of system.time.

 Proxy request
system.time.millisecond Integer Read only

The millisecond portion of system.time.

 Proxy request
system.time.zone String Read only

Timezone of the system.

 Proxy request
system.timestamp Long Read only

The 64-bit (long) integer representing the time that this variable was read. The value is the number of milliseconds elapsed since midnight, on January 1, 1970 UTC. For example, "1534783015000".

 Proxy request
system.uuid String Read only

The UUID of the message processor handling the proxy.

 Proxy request

target

Describes the target of the request.

The following table describes the properties of the target variable:

Property Type Read/Write Description Scope begins
target.basepath String Read only

The resource path (not including the domain) to the target service, excluding query parameters, that is defined in the proxy's TargetEndpoint.

For example, say an API proxy calls the following target:

<TargetEndpoint name="default">
...
  <HTTPTargetConnection>
    <URL>http://mocktarget.apigee.net/user?user=Dude</URL>
  </HTTPTargetConnection>

In this example, the target.basepath is "/user".

If the target were this:

<TargetEndpoint name="default">
...
  <HTTPTargetConnection>
    <URL>http://mocktarget.apigee.net</URL>
  </HTTPTargetConnection>

The target.basepath would be null.

 Target request
target.copy.pathsuffix Boolean Read/Write

When "true", the request forwarded from ProxyEndpoint to TargetEndpoint retains the path suffix (the URI path fragment following the URI defined in the ProxyEndpoint base path).

 Target request
target.copy.queryparams Boolean Read/Write

When "true", request forwarded from ProxyEndpoint to TargetEndpoint retains query parameters.

 Target request
target.country String Read only

Country of the TLS/SSL certificate presented by the target server

 Target response
target.cn String Read only

The Common Name of the TargetEndpoint. This is meaningful only when the TargetEndpoint refers to a TLS/SSL endpoint.

 Target request
target.email.address String Read only

Email address of the TLS/SSL certificate presented by the target server

 Target response
target.expectedcn String Read/Write

The expected Common Name of the TargetEndpoint. This is meaningful only when the TargetEndpoint refers to a TLS/SSL endpoint.

 Proxy request
target.host String Read only

The domain name of the target service returning the response to the API proxy.

 Target response
target.ip String Read only

The IP address of the target service returning the response to the API proxy.

 Target response
target.locality String Read only

Locality (city) of the TLS/SSL certificate presented by the target server

 Target response
target.name String Read only

Target to which message is reaching from targetendpoint.

 Target request
target.organization String Read only

Organization of the TLS/SSL certificate presented by the target server.

 Target response
target.organization.unit String Read only

Organization unit of the TLS/SSL certificate presented by the target server.

 Target response
target.port Integer Read only

The port number of the target service returning the response to the API proxy.

 Target response
target.received.end.time String Read only

The time, expressed in string form, at which the TargetEndpoint finished receiving the response from the target. For example, "Wed, 21 Aug 2013 19:16:47 UTC".

This time value is the string representation of the corresponding 32-bit timestamp quantity. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of "1377112607413"..

 Target response
target.received.end.
  timestamp		 Long Read only

The timestamp value specifying when the TargetEndpoint finished receiving the response from the target. For example, "1534783015000". This value is a 64-bit (long) integer specifying the number of milliseconds elapsed since midnight, on January 1, 1970 UTC.

 Target response
target.received.start.time String Read only

The time, expressed in string form, at which the TargetEndpoint started receiving the response from the target. For example, "Wed, 21 Aug 2013 19:16:47 UTC".

This time value is the string representation of the corresponding 32-bit timestamp quantity. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of "1377112607413".

 Target response
target.received.start.
  timestamp		 Long Read only

The timestamp value specifying when the TargetEndpoint started receiving the response from the target. For example, "1534783015000". This value is a 64-bit (long) integer specifying the number of milliseconds elapsed since midnight, on January 1, 1970 UTC.

 Target response
target.scheme String Read only

Scope begins: Target response
Type: String
Permission: Read/Write

Returns http or https depending on the request message.

 Target request
target.sent.end.time String Read only

The time, expressed in string form, at which the proxy stopped sending the request to the URL specified in the TargetEndpoint. For example, "Wed, 21 Aug 2013 19:16:47 UTC".

This time value is the string representation of the corresponding 32-bit timestamp quantity. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of "1377112607413".

 Target request
target.sent.end.timestamp Long Read only

The timestamp value specifying when the proxy finished sending the request to the URL specified in the TargetEndpoint. For example, "1377112607413". This value is a 64-bit (long) integer containing the number of milliseconds elapsed since midnight, on January 1, 1970 UTC.

 Target request
target.sent.start.time String Read only

The time, expressed in string form, at which the proxy began sending the request to the URL specified in the TargetEndpoint. For example, "Wed, 21 Aug 2013 19:16:47 UTC".

This time value is the string representation of the corresponding 32-bit timestamp quantity. For example, "Wed, 21 Aug 2013 19:16:47 UTC" corresponds to the timestamp value of "1377112607413".

 Target request
target.sent.start.timestamp Long Read only

The timestamp value specifying when the proxy started sending the request to the URL specified in the TargetEndpoint. For example, "1534783015000". This value is a 64-bit (long) integer specifying the number of milliseconds elapsed since midnight, on January 1, 1970 UTC.

 Target request
target.ssl.enabled Boolean Read only

Whether TargetEndpoint is running on TLS/SSL.

 Proxy request
target.state String Read only

State of the TLS/SSL certificate presented by the target server.

 Target response
target.url String Read/Write

The URL configured in the TargetEndpoint XML file or the dynamic target URL (if target.url is set during the message flow). The variable does not include any additional path elements or query parameters. Returns null if called out of scope or otherwise unset.

 Target request

variable

A container for the variable.expectedcn property.

The following table describes the properties of the variable variable:

Property Type Read/Write Description Scope begins
variable.expectedcn String Read/Write

Variable exposed for the common name if it's running on TLS/SSL.

 Proxy request

For more information on working with TLS, see the TLS/SSL introduction.

virtualhost

Specifies details about the virtual host.

The following table describes the properties of the virtualhost variable:

Property Type Read/Write Description Scope begins
virtualhost.aliases.values Array of Strings Read only

Host aliases of the virtual host that is hit during a particular request.

 Proxy request
virtualhost.name String Read only

Name of the virtual host that serves the originating client request.

 Proxy request
virtualhost.ssl.enabled Boolean Read only

Returns "true" if TLS/SSL is enabled in the virtual host configuration.

 Proxy request

For more information on working with virtual hosts, see Configuring virtual hosts.