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package ai.platon.pulsar.skeleton.crawl.fetch.driver
import ai.platon.pulsar.browser.driver.chrome.NetworkResourceResponse
import ai.platon.pulsar.common.urls.Hyperlink
import ai.platon.pulsar.common.urls.UrlUtils
import ai.platon.pulsar.common.warnForClose
import ai.platon.pulsar.dom.nodes.GeoAnchor
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import com.fasterxml.jackson.module.kotlin.readValue
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withContext
import org.jsoup.Connection
import org.jsoup.Jsoup
import java.io.IOException
import java.time.Duration
import java.time.Instant
import java.util.*
import java.util.concurrent.atomic.AtomicBoolean
import java.util.concurrent.atomic.AtomicInteger
import java.util.concurrent.atomic.AtomicReference
import kotlin.random.Random
import kotlin.random.nextInt
abstract class AbstractWebDriver(
override val browser: AbstractBrowser,
override val id: Int = ID_SUPPLIER.incrementAndGet()
): Comparable, AbstractJvmWebDriver(), WebDriver, JvmWebDriver {
companion object {
private val ID_SUPPLIER = AtomicInteger()
}
/**
* The state of the driver.
* */
enum class State {
/**
* The driver is initialized.
* */
INIT,
/**
* The driver is ready to work.
* */
READY,
/**
* The driver is working.
* */
WORKING,
/**
* The driver is retired and should be quit as soon as possible.
* */
RETIRED,
/**
* The driver is quit.
* */
QUIT;
/**
* Whether the driver is initialized.
* */
val isInit get() = this == INIT
/**
* Whether the driver is ready to work.
* */
val isReady get() = this == READY
/**
* Whether the driver is working.
* */
val isWorking get() = this == WORKING
/**
* Whether the driver is quit.
* */
val isQuit get() = this == QUIT
/**
* Whether the driver is retired and should be quit as soon as possible.
* */
val isRetired get() = this == RETIRED
}
/**
* The state of the driver.
* * [State.INIT]: The driver is initialized.
* * [State.READY]: The driver is ready to work.
* * [State.WORKING]: The driver is working.
* * [State.RETIRED]: The driver is retired and should be quit as soon as possible.
* * [State.QUIT]: The driver is quit.
* */
private val state = AtomicReference(State.INIT)
private val canceled = AtomicBoolean()
private val crashed = AtomicBoolean()
private val jsoupCreateDestroyMonitor = Any()
private var jsoupSession: Connection? = null
var idleTimeout: Duration = Duration.ofMinutes(10)
var lastActiveTime: Instant = Instant.now()
/**
* Whether the driver is idle. The driver is idle if it is not working for a period of time.
* */
val isIdle get() = Duration.between(lastActiveTime, Instant.now()) > idleTimeout
val isInit get() = state.get().isInit
val isReady get() = state.get().isReady
val isWorking get() = state.get().isWorking
val isRetired get() = state.get().isRetired
val isQuit get() = state.get().isQuit
val isCanceled get() = canceled.get()
val isCrashed get() = crashed.get()
open val supportJavascript: Boolean = true
open val isMockedPageSource: Boolean = false
var isRecovered: Boolean = false
var isReused: Boolean = false
/**
* If a driver is recyclable, it should be closed after the task is done, and add to a standby pool,
* so it can be reused for other tasks.
*
* If a driver is not recyclable, it should be kept open and not be closed, and not be used by any other tasks.
* */
var isRecyclable: Boolean = true
/**
* Whether the driver should calculate the DOM features.
*
* If true, the DOM features should be calculated using __pulsar_utils__.compute().
* */
var ignoreDOMFeatures: Boolean = false
/**
* The name of the driver.
* */
open val name get() = javaClass.simpleName + "-" + id
/**
* The navigate entry of the current page.
* */
override var navigateEntry: NavigateEntry = NavigateEntry("")
/**
* The navigate history of this driver.
* */
override val navigateHistory = NavigateHistory()
/**
* The delay policy of the driver.
* */
override val delayPolicy by lazy { browser.browserSettings.interactSettings.generateRestrictedDelayPolicy() }
/**
* The timeout policy of the driver.
* */
override val timeoutPolicy by lazy { browser.browserSettings.interactSettings.generateRestrictedTimeoutPolicy() }
/**
* The frames of the current page.
* */
override val frames: MutableList = mutableListOf()
/**
* The opener of the current page.
* */
override var opener: WebDriver? = null
/**
* The outgoing opened pages from the current page.
* */
override val outgoingPages: MutableSet = mutableSetOf()
/**
* The associated data.
* */
override val data: MutableMap = mutableMapOf()
/**
* Mark the driver as free, so it can be used to fetch a new page.
* */
fun free() {
canceled.set(false)
crashed.set(false)
if (!isInit && !isWorking) {
// It's a bad idea to throw an exception, which lead to inconsistency within the ConcurrentStatefulDriverPool.
// throw IllegalWebDriverStateException("The driver is expected to be INIT or WORKING to be ready, actually $state")
}
state.set(State.READY)
}
/**
* Mark the driver as working, so it can not be used to do any another tasks.
* */
fun startWork() {
canceled.set(false)
crashed.set(false)
if (!isInit && !isReady) {
// It's a bad idea to throw an exception, which lead to inconsistency within the ConcurrentStatefulDriverPool.
// throw IllegalWebDriverStateException("The driver is expected to be INIT or READY to work, actually $state")
}
state.set(State.WORKING)
}
/**
* Mark the driver as retired, so it can not be used to fetch any page,
* and should be quit as soon as possible.
* */
fun retire() = state.set(State.RETIRED)
/**
* Mark the driver as canceled, so the fetch process should return as soon as possible,
* and the fetch result should be dropped.
* */
fun cancel() {
canceled.set(true)
}
override fun jvm(): JvmWebDriver = this
val mainRequestHeaders: Map get() = navigateEntry.mainRequestHeaders
val mainRequestCookies: List> get() = navigateEntry.mainRequestCookies
val mainResponseStatus: Int get() = navigateEntry.mainResponseStatus
val mainResponseStatusText: String get() = navigateEntry.mainResponseStatusText
val mainResponseHeaders: Map get() = navigateEntry.mainResponseHeaders
@Throws(WebDriverException::class)
override suspend fun navigateTo(url: String) = navigateTo(NavigateEntry(url))
override suspend fun currentUrl(): String = evaluate("document.URL", navigateEntry.url)
@Throws(WebDriverException::class)
override suspend fun url() = evaluate("document.URL", "")
@Throws(WebDriverException::class)
override suspend fun documentURI() = evaluate("document.documentURI", "")
@Throws(WebDriverException::class)
override suspend fun baseURI() = evaluate("document.baseURI", "")
@Throws(WebDriverException::class)
override suspend fun referrer() = evaluate("document.referrer", "")
@Suppress("UNCHECKED_CAST")
@Throws(WebDriverException::class)
override suspend fun evaluate(expression: String, defaultValue: T): T {
return evaluate(expression) as? T ?: defaultValue
}
@Throws(WebDriverException::class)
override suspend fun isVisible(selector: String): Boolean {
return evaluate("__pulsar_utils__.isVisible('$selector')") == "true"
}
override suspend fun isChecked(selector: String): Boolean {
return evaluate("__pulsar_utils__.isChecked('$selector')") == "true"
}
@Throws(WebDriverException::class)
override suspend fun scrollDown(count: Int) {
repeat(count) {
evaluate("__pulsar_utils__.scrollDown()")
}
}
@Throws(WebDriverException::class)
override suspend fun scrollUp(count: Int) {
evaluate("__pulsar_utils__.scrollUp()")
}
@Throws(WebDriverException::class)
override suspend fun scrollToTop() {
evaluate("__pulsar_utils__.scrollToTop()")
}
@Throws(WebDriverException::class)
override suspend fun scrollToBottom() {
evaluate("__pulsar_utils__.scrollToBottom()")
}
@Deprecated("Use scrollToMiddle(Double) instead", replaceWith = ReplaceWith("scrollToMiddle(ratio.toDouble())"))
@Throws(WebDriverException::class)
override suspend fun scrollToMiddle(ratio: Float) = scrollToMiddle(ratio.toDouble())
@Throws(WebDriverException::class)
override suspend fun scrollToMiddle(ratio: Double) {
evaluate("__pulsar_utils__.scrollToMiddle($ratio)")
}
@Throws(WebDriverException::class)
override suspend fun clickNthAnchor(n: Int, rootSelector: String): String? {
val result = evaluate("__pulsar_utils__.clickNthAnchor($n, '$rootSelector')")
return result?.toString()
}
@Throws(WebDriverException::class)
override suspend fun outerHTML() = outerHTML(":root")
@Throws(WebDriverException::class)
override suspend fun outerHTML(selector: String): String? {
val result = evaluate("__pulsar_utils__.outerHTML('$selector')")
return result?.toString()
}
@Throws(WebDriverException::class)
override suspend fun selectFirstTextOrNull(selector: String): String? {
val result = evaluate("__pulsar_utils__.selectFirstText('$selector')")
return result?.toString()
}
@Throws(WebDriverException::class)
override suspend fun selectTextAll(selector: String): List {
val json = evaluate("__pulsar_utils__.selectTextAll('$selector')")?.toString()?: "[]"
val result: List = jacksonObjectMapper().readValue(json)
return result
}
@Throws(WebDriverException::class)
override suspend fun selectFirstAttributeOrNull(selector: String, attrName: String): String? {
val result = evaluate("__pulsar_utils__.selectFirstAttribute('$selector', '$attrName')")
return result?.toString()
}
override suspend fun selectAttributes(selector: String): Map {
val json = evaluate("__pulsar_utils__.selectAttributes('$selector')")?.toString() ?: return mapOf()
val attributes: List = jacksonObjectMapper().readValue(json)
return attributes.zipWithNext().associate { it }
}
@Throws(WebDriverException::class)
override suspend fun selectAttributeAll(selector: String, attrName: String, start: Int, limit: Int): List {
val json = evaluate("__pulsar_utils__.selectAttributeAll('$selector', '$attrName')")?.toString() ?: return listOf()
return jacksonObjectMapper().readValue(json)
}
@Throws(WebDriverException::class)
override suspend fun setAttribute(selector: String, attrName: String, attrValue: String) {
evaluate("__pulsar_utils__.setAttribute('$selector', '$attrName', '$attrValue')")
}
@Throws(WebDriverException::class)
override suspend fun setAttributeAll(selector: String, attrName: String, attrValue: String) {
evaluate("__pulsar_utils__.setAttributeAll('$selector', '$attrName', '$attrValue')")
}
/**
* Find hyperlinks in elements matching the CSS query.
* */
@Throws(WebDriverException::class)
override suspend fun selectHyperlinks(selector: String, offset: Int, limit: Int): List {
// val result = evaluate("__pulsar_utils__.allAttrs('$selector', 'abs:href')")
// TODO: add __pulsar_utils__.selectHyperlinks()
return selectAttributeAll(selector, "abs:href").drop(offset).take(limit).map { Hyperlink(it) }
}
/**
* Find image elements matching the CSS query.
* */
@Throws(WebDriverException::class)
override suspend fun selectAnchors(selector: String, offset: Int, limit: Int): List {
// TODO: add __pulsar_utils__.selectAnchors()
return selectAttributeAll(selector, "abs:href").drop(offset).take(limit).map { GeoAnchor(it, "") }
}
/**
* Find image elements matching the CSS query.
* */
@Throws(WebDriverException::class)
override suspend fun selectImages(selector: String, offset: Int, limit: Int): List {
// TODO: add __pulsar_utils__.selectImages()
return selectAttributeAll(selector, "abs:src").drop(offset).take(limit)
}
@Throws(WebDriverException::class)
override suspend fun clickTextMatches(selector: String, pattern: String, count: Int) {
evaluate("__pulsar_utils__.clickTextMatches('$selector', '$pattern')")
}
@Throws(WebDriverException::class)
override suspend fun clickMatches(selector: String, attrName: String, pattern: String, count: Int) {
evaluate("__pulsar_utils__.clickMatches('$selector', '$attrName', '$pattern')")
}
@Throws(WebDriverException::class)
override suspend fun check(selector: String) {
evaluate("__pulsar_utils__.check('$selector')")
}
@Throws(WebDriverException::class)
override suspend fun uncheck(selector: String) {
evaluate("__pulsar_utils__.uncheck('$selector')")
}
@Throws(WebDriverException::class)
override suspend fun waitForSelector(selector: String) = waitForSelector(selector, timeout("waitForSelector"))
@Throws(WebDriverException::class)
override suspend fun waitForSelector(selector: String, action: suspend () -> Unit) =
waitForSelector(selector, timeout("waitForSelector"), action)
@Throws(WebDriverException::class)
override suspend fun waitUntil(predicate: suspend () -> Boolean) = waitUntil(timeout("waitUntil"), predicate)
@Throws(WebDriverException::class)
override suspend fun waitForNavigation(oldUrl: String) = waitForNavigation(oldUrl, timeout("waitForNavigation"))
@Throws(WebDriverException::class)
override suspend fun newJsoupSession(): Connection {
val headers = mainRequestHeaders.entries.associate { it.key to it.value.toString() }
val cookies = getCookies()
return newSession(headers, cookies)
}
@Throws(IOException::class)
override suspend fun loadJsoupResource(url: String): Connection.Response {
val jsession: Connection = synchronized(jsoupCreateDestroyMonitor) {
jsoupSession ?: createJsoupSession()
}
jsoupSession = jsession
return withContext(Dispatchers.IO) {
jsession.newRequest().url(url).execute()
}
}
private fun createJsoupSession(): Connection {
val (headers, cookies) = getHeadersAndCookies()
return newSession(headers, cookies)
}
@Throws(IOException::class)
override suspend fun loadResource(url: String): NetworkResourceResponse {
return NetworkResourceHelper.fromJsoup(loadJsoupResource(url))
}
override fun equals(other: Any?): Boolean = this === other || (other is AbstractWebDriver && other.id == this.id)
override fun hashCode(): Int = id
override fun compareTo(other: AbstractWebDriver): Int = id - other.id
override fun toString(): String = "#$id"
/**
* Force the page stop all navigations and RELEASES all resources.
* If a web driver is terminated, it should not be used any more and should be quit
* as soon as possible.
* */
@Throws(WebDriverException::class)
open suspend fun terminate() {
stop()
}
/** Wait until the tab is terminated and closed. */
@Throws(Exception::class)
open fun awaitTermination() {
}
override fun close() {
if (isQuit) {
return
}
state.set(State.QUIT)
runCatching { runBlocking { stop() } }.onFailure { warnForClose(this, it) }
}
/**
* Generate a random delay in milliseconds.
*
* The generated delay time is an int random value uniformly distributed in a specified range.
*
* The delay range should be in [1, 10000], and the default range is [500, 1000].
* */
fun randomDelayMillis(action: String, fallback: IntRange = 500..1000): Long {
val default = delayPolicy["default"] ?: fallback
var range = delayPolicy[action] ?: default
if (range.first <= 0 || range.last > 10000) {
range = fallback
}
return Random.nextInt(range).toLong()
}
fun timeout(action: String, fallback: Duration = Duration.ofSeconds(60)): Duration {
return timeoutPolicy[action] ?: timeoutPolicy["default"] ?: timeoutPolicy[""] ?: fallback
}
private fun getHeadersAndCookies(): Pair, List>> {
return runBlocking {
val headers = mainRequestHeaders.entries.associate { it.key to it.value.toString() }
val cookies = getCookies()
headers to cookies
}
}
/**
* Create a new session with the same context of the browser: headers, cookies, proxy, etc.
* The browser should be initialized by opening a page before the session is created.
* */
private fun newSession(headers: Map, cookies: List>): Connection {
val httpTimeout = Duration.ofSeconds(20)
val session = Jsoup.newSession()
.timeout(httpTimeout.toMillis().toInt())
.headers(headers)
.ignoreContentType(true)
.ignoreHttpErrors(true)
session.userAgent(browser.userAgent)
if (cookies.isNotEmpty()) {
session.cookies(cookies.first())
}
// Since the browser uses the system proxy (by default),
// so the http connection should also use the system proxy
val proxy = browser.id.fingerprint.proxyServer ?: System.getenv("http_proxy")
if (proxy != null && UrlUtils.isStandard(proxy)) {
val u = UrlUtils.getURLOrNull(proxy)
if (u != null) {
// TODO: sock proxy support
session.proxy(u.host, u.port)
}
}
return session
}
}
