Chapter 100. FHIR Component

Available as of Camel version 2.23

The FHIR component integrates with the HAPI-FHIR library which is an open-source implementation of the FHIR (Fast Healthcare Interoperability Resources) specification in Java.

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-fhir</artifactId>
    <version>${camel-version}</version>
</dependency>

100.1. URI Format

The FHIR Component uses the following URI format:

fhir://endpoint-prefix/endpoint?[options]

Endpoint prefix can be one of:

  • capabilities
  • create
  • delete
  • history
  • load-page
  • meta
  • operation
  • patch
  • read
  • search
  • transaction
  • update
  • validate

The FHIR component supports 2 options, which are listed below.

NameDescriptionDefaultType

configuration (common)

To use the shared configuration

 

FhirConfiguration

resolveProperty Placeholders (advanced)

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

boolean

The FHIR endpoint is configured using URI syntax:

fhir:apiName/methodName

with the following path and query parameters:

100.1.1. Path Parameters (2 parameters):

NameDescriptionDefaultType

apiName

Required What kind of operation to perform

 

FhirApiName

methodName

Required What sub operation to use for the selected operation

 

String

100.1.2. Query Parameters (26 parameters):

NameDescriptionDefaultType

encoding (common)

Encoding to use for all request

 

String

fhirVersion (common)

The FHIR Version to use

DSTU3

String

inBody (common)

Sets the name of a parameter to be passed in the exchange In Body

 

String

log (common)

Will log every requests and responses

false

boolean

prettyPrint (common)

Pretty print all request

false

boolean

serverUrl (common)

The FHIR server base URL

 

String

bridgeErrorHandler (consumer)

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

boolean

exceptionHandler (consumer)

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.

 

ExceptionHandler

exchangePattern (consumer)

Sets the exchange pattern when the consumer creates an exchange.

 

ExchangePattern

compress (advanced)

Compresses outgoing (POST/PUT) contents to the GZIP format

false

boolean

connectionTimeout (advanced)

How long to try and establish the initial TCP connection (in ms)

10000

Integer

deferModelScanning (advanced)

When this option is set, model classes will not be scanned for children until the child list for the given type is actually accessed.

false

boolean

fhirContext (advanced)

FhirContext is an expensive object to create. To avoid creating multiple instances, it can be set directly.

 

FhirContext

forceConformanceCheck (advanced)

Force conformance check

false

boolean

sessionCookie (advanced)

HTTP session cookie to add to every request

 

String

socketTimeout (advanced)

How long to block for individual read/write operations (in ms)

10000

Integer

summary (advanced)

Request that the server modify the response using the _summary param

 

String

synchronous (advanced)

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

boolean

validationMode (advanced)

When should Camel validate the FHIR Server’s conformance statement

ONCE

String

proxyHost (proxy)

The proxy host

 

String

proxyPassword (proxy)

The proxy password

 

String

proxyPort (proxy)

The proxy port

 

Integer

proxyUser (proxy)

The proxy username

 

String

accessToken (security)

OAuth access token

 

String

password (security)

Username to use for basic authentication

 

String

username (security)

Username to use for basic authentication

 

String

100.2. Spring Boot Auto-Configuration

The component supports 23 options, which are listed below.

NameDescriptionDefaultType

camel.component.fhir.configuration.access-token

OAuth access token

 

String

camel.component.fhir.configuration.api-name

What kind of operation to perform

 

FhirApiName

camel.component.fhir.configuration.client

To use the custom client

 

IGenericClient

camel.component.fhir.configuration.client-factory

To use the custom client factory

 

IRestfulClientFactory

camel.component.fhir.configuration.compress

Compresses outgoing (POST/PUT) contents to the GZIP format

false

Boolean

camel.component.fhir.configuration.connection-timeout

How long to try and establish the initial TCP connection (in ms)

10000

Integer

camel.component.fhir.configuration.defer-model-scanning

When this option is set, model classes will not be scanned for children until the child list for the given type is actually accessed.

false

Boolean

camel.component.fhir.configuration.fhir-context

FhirContext is an expensive object to create. To avoid creating multiple instances, it can be set directly.

 

FhirContext

camel.component.fhir.configuration.force-conformance-check

Force conformance check

false

Boolean

camel.component.fhir.configuration.log

Will log every requests and responses

false

Boolean

camel.component.fhir.configuration.method-name

What sub operation to use for the selected operation

 

String

camel.component.fhir.configuration.password

Username to use for basic authentication

 

String

camel.component.fhir.configuration.pretty-print

Pretty print all request

false

Boolean

camel.component.fhir.configuration.proxy-host

The proxy host

 

String

camel.component.fhir.configuration.proxy-password

The proxy password

 

String

camel.component.fhir.configuration.proxy-port

The proxy port

 

Integer

camel.component.fhir.configuration.proxy-user

The proxy username

 

String

camel.component.fhir.configuration.server-url

The FHIR server base URL

 

String

camel.component.fhir.configuration.session-cookie

HTTP session cookie to add to every request

 

String

camel.component.fhir.configuration.socket-timeout

How long to block for individual read/write operations (in ms)

10000

Integer

camel.component.fhir.configuration.username

Username to use for basic authentication

 

String

camel.component.fhir.enabled

Whether to enable auto configuration of the fhir component. This is enabled by default.

 

Boolean

camel.component.fhir.resolve-property-placeholders

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

Boolean