101 lines
4.0 KiB
Kotlin
101 lines
4.0 KiB
Kotlin
package com.github.insanusmokrassar.TelegramBotAPI.bot.Ktor
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import com.github.insanusmokrassar.TelegramBotAPI.bot.BaseRequestsExecutor
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import com.github.insanusmokrassar.TelegramBotAPI.bot.Ktor.base.MultipartRequestCallFactory
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import com.github.insanusmokrassar.TelegramBotAPI.bot.Ktor.base.SimpleRequestCallFactory
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import com.github.insanusmokrassar.TelegramBotAPI.bot.exceptions.newRequestException
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import com.github.insanusmokrassar.TelegramBotAPI.bot.settings.limiters.EmptyLimiter
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import com.github.insanusmokrassar.TelegramBotAPI.bot.settings.limiters.RequestLimiter
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import com.github.insanusmokrassar.TelegramBotAPI.requests.abstracts.Request
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import com.github.insanusmokrassar.TelegramBotAPI.types.Response
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import com.github.insanusmokrassar.TelegramBotAPI.types.RetryAfterError
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import com.github.insanusmokrassar.TelegramBotAPI.utils.*
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import io.ktor.client.HttpClient
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import io.ktor.client.call.receive
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import io.ktor.client.features.*
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import io.ktor.client.statement.HttpStatement
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import io.ktor.client.statement.readText
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import kotlinx.coroutines.delay
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import kotlinx.serialization.json.Json
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class KtorRequestsExecutor(
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telegramAPIUrlsKeeper: TelegramAPIUrlsKeeper,
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client: HttpClient = HttpClient(),
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callsFactories: List<KtorCallFactory> = emptyList(),
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excludeDefaultFactories: Boolean = false,
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private val requestsLimiter: RequestLimiter = EmptyLimiter,
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private val jsonFormatter: Json = nonstrictJsonFormat
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) : BaseRequestsExecutor(telegramAPIUrlsKeeper) {
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private val callsFactories: List<KtorCallFactory> = callsFactories.run {
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if (!excludeDefaultFactories) {
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asSequence().plus(SimpleRequestCallFactory()).plus(MultipartRequestCallFactory()).toList()
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} else {
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this
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}
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}
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private val client = client.config {
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if (client.feature(HttpTimeout) == null) {
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install(HttpTimeout)
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}
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}
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override suspend fun <T : Any> execute(request: Request<T>): T {
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return handleSafely(
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{ e ->
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throw if (e is ClientRequestException) {
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val content = e.response.readText()
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val responseObject = jsonFormatter.decodeFromString(Response.serializer(), content)
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newRequestException(
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responseObject,
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content,
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"Can't get result object from $content"
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)
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} else {
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e
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}
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}
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) {
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requestsLimiter.limit {
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var statement: HttpStatement? = null
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for (factory in callsFactories) {
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statement = factory.prepareCall(
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client,
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telegramAPIUrlsKeeper.commonAPIUrl,
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request
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)
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if (statement != null) {
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break
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}
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}
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val response = statement?.execute() ?: throw IllegalArgumentException("Can't execute request: $request")
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val content = response.receive<String>()
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val responseObject = jsonFormatter.decodeFromString(Response.serializer(), content)
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(responseObject.result?.let {
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jsonFormatter.decodeFromJsonElement(request.resultDeserializer, it)
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} ?: responseObject.parameters?.let {
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val error = it.error
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if (error is RetryAfterError) {
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delay(error.leftToRetry)
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execute(request)
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} else {
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null
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}
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} ?: response.let {
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throw newRequestException(
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responseObject,
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content,
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"Can't get result object from $content"
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)
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})
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}
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}
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}
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override fun close() {
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client.close()
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}
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}
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