101 lines
4.3 KiB
Kotlin
101 lines
4.3 KiB
Kotlin
package dev.inmo.tgbotapi.bot.ktor.base
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import dev.inmo.micro_utils.coroutines.runCatchingSafely
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import dev.inmo.tgbotapi.bot.BaseRequestsExecutor
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import dev.inmo.tgbotapi.bot.exceptions.BotException
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import dev.inmo.tgbotapi.bot.exceptions.CommonBotException
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import dev.inmo.tgbotapi.bot.exceptions.newRequestException
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import dev.inmo.tgbotapi.bot.ktor.KtorCallFactory
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import dev.inmo.tgbotapi.bot.ktor.KtorPipelineStepsHolder
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import dev.inmo.tgbotapi.bot.ktor.createTelegramBotDefaultKtorCallRequestsFactories
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import dev.inmo.tgbotapi.bot.settings.limiters.ExceptionsOnlyLimiter
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import dev.inmo.tgbotapi.bot.settings.limiters.RequestLimiter
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import dev.inmo.tgbotapi.requests.abstracts.Request
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import dev.inmo.tgbotapi.types.Response
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import dev.inmo.tgbotapi.utils.TelegramAPIUrlsKeeper
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import dev.inmo.tgbotapi.utils.nonstrictJsonFormat
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import io.ktor.client.*
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import io.ktor.client.plugins.*
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import io.ktor.client.statement.*
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import kotlinx.serialization.json.Json
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class DefaultKtorRequestsExecutor(
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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 = ExceptionsOnlyLimiter,
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private val jsonFormatter: Json = nonstrictJsonFormat,
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private val pipelineStepsHolder: KtorPipelineStepsHolder = KtorPipelineStepsHolder
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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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this + createTelegramBotDefaultKtorCallRequestsFactories()
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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.pluginOrNull(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 runCatchingSafely {
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pipelineStepsHolder.onBeforeSearchCallFactory(request, callsFactories)
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requestsLimiter.limit(request) {
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var result: T? = null
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lateinit var factoryHandledRequest: KtorCallFactory
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for (potentialFactory in callsFactories) {
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pipelineStepsHolder.onBeforeCallFactoryMakeCall(request, potentialFactory)
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result = potentialFactory.makeCall(
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client,
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telegramAPIUrlsKeeper,
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request,
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jsonFormatter
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)
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result = pipelineStepsHolder.onAfterCallFactoryMakeCall(result, request, potentialFactory)
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if (result != null) {
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factoryHandledRequest = potentialFactory
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break
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}
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}
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result ?.let {
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pipelineStepsHolder.onRequestResultPresented(it, request, factoryHandledRequest, callsFactories)
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} ?: pipelineStepsHolder.onRequestResultAbsent(request, callsFactories) ?: error("Can't execute request: $request")
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}
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}.let {
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val result = it.exceptionOrNull() ?.let { e ->
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pipelineStepsHolder.onRequestException(request, e) ?.let { return@let it }
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when (e) {
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is ClientRequestException -> {
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val exceptionResult = runCatchingSafely {
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val content = e.response.bodyAsText()
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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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}
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exceptionResult.exceptionOrNull() ?.let {
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CommonBotException(cause = e)
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} ?: exceptionResult.getOrThrow()
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}
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is BotException -> e
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else -> CommonBotException(cause = e)
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}
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} ?.let { Result.failure(it) } ?: it
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pipelineStepsHolder.onRequestReturnResult(result, request, callsFactories)
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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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