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scala-httpclient.apiInvoker.mustache Maven / Gradle / Ivy
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package {{invokerPackage}}
import com.sun.jersey.api.client.Client
import com.sun.jersey.api.client.ClientResponse
import com.sun.jersey.api.client.config.ClientConfig
import com.sun.jersey.api.client.config.DefaultClientConfig
import com.sun.jersey.api.client.filter.LoggingFilter
import com.sun.jersey.core.util.MultivaluedMapImpl
import com.sun.jersey.multipart.FormDataMultiPart
import com.sun.jersey.multipart.file.FileDataBodyPart
import java.io.File
import java.net.URLEncoder
import java.util.UUID
import javax.ws.rs.core.MediaType
import scala.collection.JavaConverters._
import scala.collection.mutable
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import com.fasterxml.jackson.datatype.joda.JodaModule
import com.fasterxml.jackson.core.JsonGenerator.Feature
import com.fasterxml.jackson.databind._
import com.fasterxml.jackson.annotation._
import com.fasterxml.jackson.databind.annotation.JsonSerialize
object ScalaJsonUtil {
def getJsonMapper: ObjectMapper = {
val mapper = new ObjectMapper()
mapper.registerModule(new DefaultScalaModule())
mapper.registerModule(new JodaModule())
mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL)
mapper.setSerializationInclusion(JsonInclude.Include.NON_DEFAULT)
mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
mapper.setSerializationInclusion(JsonInclude.Include.NON_EMPTY)
mapper
}
}
class ApiInvoker(val mapper: ObjectMapper = ScalaJsonUtil.getJsonMapper,
httpHeaders: mutable.HashMap[String, String] = mutable.HashMap(),
hostMap: mutable.HashMap[String, Client] = mutable.HashMap(),
asyncHttpClient: Boolean = false,
authScheme: String = "",
authPreemptive: Boolean = false
) {
var defaultHeaders: mutable.HashMap[String, String] = httpHeaders
def escape(value: String): String = {
URLEncoder.encode(value, "utf-8").replaceAll("\\+", "%20")
}
def escape(values: List[String]): String = {
values.map(escape).mkString(",")
}
def escape(value: Long): String = value.toString
def escape(value: Double): String = value.toString
def escape(value: Float): String = value.toString
def escape(value: UUID): String = value.toString
def deserialize(json: String, containerType: String, cls: Class[_]) = {
if (cls == classOf[String]) {
json match {
case s: String =>
if (s.startsWith("\"") && s.endsWith("\"") && s.length > 1) {
s.substring(1, s.length - 1)
} else {
s
}
case _ => null
}
} else {
containerType.toLowerCase match {
case "array" =>
val typeInfo = mapper.getTypeFactory.constructCollectionType(classOf[java.util.List[_]], cls)
val response = mapper.readValue(json, typeInfo).asInstanceOf[java.util.List[_]]
response.asScala.toList
case "list" =>
val typeInfo = mapper.getTypeFactory.constructCollectionType(classOf[java.util.List[_]], cls)
val response = mapper.readValue(json, typeInfo).asInstanceOf[java.util.List[_]]
response.asScala.toList
case _ =>
json match {
case e: String if "\"\"" == e => null
case _ => mapper.readValue(json, cls)
}
}
}
}
def serialize(obj: AnyRef): String = {
if (obj != null) {
obj match {
case e: List[_] => mapper.writeValueAsString(obj.asInstanceOf[List[_]].asJava)
case _ => mapper.writeValueAsString(obj)
}
} else {
null
}
}
def invokeApi(
host: String,
path: String,
method: String,
queryParams: Map[String, String],
formParams: Map[String, String],
body: AnyRef,
headerParams: Map[String, String],
contentType: String
): String = {
val client = getClient(host)
val querystring = queryParams.filter(k => k._2 != null).map(k => escape(k._1) + "=" + escape(k._2)).mkString("?", "&", "")
val builder = client.resource(host + path + querystring).accept(contentType)
headerParams.map(p => builder.header(p._1, p._2))
defaultHeaders.foreach(p => {
if (!headerParams.contains(p._1) && p._2 != null) {
builder.header(p._1, p._2)
}
})
var formData: MultivaluedMapImpl = null
if (contentType == "application/x-www-form-urlencoded") {
formData = new MultivaluedMapImpl()
formParams.foreach(p => formData.add(p._1, p._2))
}
val response: ClientResponse = method match {
case "GET" => builder.get(classOf[ClientResponse])
case "POST" =>
if (formData != null && formData.size() > 0) {
builder.post(classOf[ClientResponse], formData)
} else if (body != null && body.isInstanceOf[File]) {
val file = body.asInstanceOf[File]
val form = new FormDataMultiPart()
form.field("filename", file.getName)
form.bodyPart(new FileDataBodyPart("file", file, MediaType.MULTIPART_FORM_DATA_TYPE))
builder.post(classOf[ClientResponse], form)
} else {
if (body == null) {
builder.post(classOf[ClientResponse], serialize(body))
} else {
builder.`type`(contentType).post(classOf[ClientResponse], serialize(body))
}
}
case "PUT" =>
if (formData != null) {
builder.post(classOf[ClientResponse], formData)
} else if (body == null) {
builder.put(classOf[ClientResponse], null)
} else {
builder.`type`(contentType).put(classOf[ClientResponse], serialize(body))
}
case "DELETE" => builder.delete(classOf[ClientResponse])
case "PATCH" =>
if(formData != null) {
builder.header("X-HTTP-Method-Override", "PATCH").post(classOf[ClientResponse], formData)
} else if(body == null) {
builder.header("X-HTTP-Method-Override", "PATCH").post(classOf[ClientResponse], null)
} else {
builder.header("X-HTTP-Method-Override", "PATCH").`type`(contentType).post(classOf[ClientResponse], serialize(body))
}
case _ => null
}
response.getStatusInfo.getStatusCode match {
case 204 => ""
case code: Int if Range(200, 299).contains(code) =>
if (response.hasEntity) {
response.getEntity(classOf[String])
} else {
""
}
case _ =>
val entity = if (response.hasEntity) {
response.getEntity(classOf[String])
} else {
"no data"
}
throw new ApiException(response.getStatusInfo.getStatusCode, entity)
}
}
def getClient(host: String): Client = {
if (hostMap.contains(host)) {
hostMap(host)
} else {
val client = newClient(host)
// client.addFilter(new LoggingFilter())
hostMap += host -> client
client
}
}
def newClient(host: String): Client = if (asyncHttpClient) {
import com.ning.http.client.Realm
import org.sonatype.spice.jersey.client.ahc.AhcHttpClient
import org.sonatype.spice.jersey.client.ahc.config.DefaultAhcConfig
val config: DefaultAhcConfig = new DefaultAhcConfig()
if (!authScheme.isEmpty) {
val authSchemeEnum = Realm.AuthScheme.valueOf(authScheme)
config
.getAsyncHttpClientConfigBuilder
.setRealm(new Realm.RealmBuilder().setScheme(authSchemeEnum)
.setUsePreemptiveAuth(authPreemptive).build)
}
AhcHttpClient.create(config)
} else {
Client.create()
}
}
object ApiInvoker extends ApiInvoker(
mapper = ScalaJsonUtil.getJsonMapper,
httpHeaders = mutable.HashMap(),
hostMap = mutable.HashMap(),
asyncHttpClient = {{asyncHttpClient}},
authScheme = "{{authScheme}}",
authPreemptive = {{authPreemptive}}
)
class ApiException(val code: Int, msg: String) extends RuntimeException(msg)
