com.lightningkite.rx.okhttp.HttpResponse.kt Maven / Gradle / Ivy

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An OkHttp wrapper based on RxJava using Jackson for JSON

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package com.lightningkite.rx.okhttp

import com.fasterxml.jackson.core.type.TypeReference
import com.fasterxml.jackson.module.kotlin.jacksonTypeRef
import com.fasterxml.jackson.module.kotlin.readValue
import io.reactivex.rxjava3.core.Single
import io.reactivex.rxjava3.core.SingleEmitter
import okhttp3.Response
import java.lang.reflect.ParameterizedType
import java.lang.reflect.Type

/**
 * Closes the body of the response as a [Single].
 */
fun Response.discard(): Single = Single.create { em ->
    body!!.close()
    em.onSuccess(Unit)
}.let { HttpClient.threadCorrectly(it) }

/**
 * Reads the body of the response as a [Single].
 */
fun Response.readText(): Single =
    Single.create { em -> em.onSuccess(body!!.use { it.string() }) }.let { HttpClient.threadCorrectly(it) }

/**
 * Reads the body of the response as a [Single].
 */
fun Response.readByteArray(): Single =
    Single.create { em -> em.onSuccess(body!!.use { it.bytes() }) }.let { HttpClient.threadCorrectly(it) }

/**
 * Reads the body of the response as a [Single], using [defaultJsonMapper] to parse the JSON.
 */
inline fun  Response.readJson(): Single = readJson(jacksonTypeRef())

/**
 * Reads the body of the response as a [Single], using [defaultJsonMapper] to parse the JSON.
 */
fun  Response.readJson(typeToken: TypeReference): Single = Single.create { em: SingleEmitter ->
    try {
        val result: T = body!!.use {
            defaultJsonMapper.readValue(it.byteStream(), typeToken)
        }
        em.onSuccess(result)
    } catch (e: Throwable) {
        em.tryOnError(e)
    }
}.let { HttpClient.threadCorrectly(it) }


/**
 * Reads the body of the response as a [Single], using [defaultJsonMapper] to parse the JSON.
 * Dumps the raw response to [System.out].
 */
inline fun  Response.readJsonDebug(): Single = readJsonDebug(jacksonTypeRef())

/**
 * Reads the body of the response as a [Single], using [defaultJsonMapper] to parse the JSON.
 * Dumps the raw response to [System.out].
 */
fun  Response.readJsonDebug(typeToken: TypeReference): Single = readText().map { println("HttpResponse got $it"); it.fromJsonString(typeToken) }