// 官方示例
scenario("Standard User")
.exec(http("Access Github").get("https://github.com"))
.pause(2, 3)
.exec(http("Search for 'gatling'").get("https://github.com/search?q=gatling"))
.pause(2)
创建场景
scenario("My Scenario")
结构元素
exec
- 基本使用
scenario("My Scenario")
.exec(http("Get Homepage").get("http://github.com/gatling/gatling"))
- exec可以接受一个
Session => Validation[T]
类型的参数
exec { session =>
// 打印session信息到控制台(debug模式下有效)
println(session)
// 可以在这里面修改/设置session中的数据,给接下来的请求使用
// 请注意,返回值是一个session(scala中不需要return,语句执行的最后结果就是返回)
session
}
exec { session =>
// return a new session instance with a new "foo" attribute whose value is "bar"
session.set("foo", "bar")
}
- 不要在函数表达式中添加if等条件判断,如果需要根据session进行流程控制请使用其他的控制器方法,如:doIf、randomSwitch
exec { session =>
if (someSessionBasedCondition(session)) {
// just create a builder that is immediately discarded, hence doesn't do anything
// you should be using a doIf here
http("Get Homepage").get("http://github.com/gatling/gatling")
}
session
}
- flattenMapIntoAttributes - 内置的会话表达
// assuming the Session contains an attribute named "theMap" whose content is :
// Map("foo" -> "bar", "baz" -> "qix")
exec(flattenMapIntoAttributes("${theMap}"))
// the Session contains 2 new attributes "foo" and "baz".
pause
- 固定暂停时间
pause(duration: Duration)
pause(duration: String, unit: TimeUnit = TimeUnit.SECONDS)
pause(duration: Expression[Duration])
- 随机暂停时间
pause(min: Duration, max: Duration)
pause(min: String, max: String, unit: TimeUnit)
pause(min: Expression[Duration], max: Expression[Duration])
pace
用户控制action的执行频率,可用于控制QPS
- 固定的速度持续时间
pace(duration: Duration)
pace(duration: String, unit: TimeUnit = TimeUnit.SECONDS)
pace(duration: Expression[Duration])
- 均匀随机步长
pace(min: Duration, max: Duration)
pace(min: String, max: String, unit: TimeUnit)
pace(min: Expression[Duration], max: Expression[Duration])
forever(
pace(5 seconds)
.exec(
pause(1 second, 4 seconds) // 将每5秒运行一次,而不管使用什么暂停时间
)
)
rendezVous
集合点
rendezVous(users: Int)
该方法接受等待的用户数量,当满足达到的用户数量时才会继续下面的执行
循环控制
- repeat
重复循环指定的次数
语法:
repeat(times, counterName) {
myChain
}
repeat(20) { myChain } // Int
repeat("${myKey}") { myChain } // EL表达式
repeat(session => session("foo").as[Int]) { myChain } // 从session中拿到的Int属性
repeat((session) => 10) { myChain } // 任何返回值为Int均可
- foreach
语法:
foreach(sequenceName, elementName, counterName) {
myChain
}
- during
语法:
during(duration, counterName, exitASAP) {
myChain
}
duration 默认seconds,也可以使用Duration500 milliseconds
counterName 可选参数
exitASAP 可选参数,默认为true
- asLongAs
语法:
asLongAs(condition, counterName, exitASAP) {
myChain
}
condition是一个session function,返回值是boolean值
counterName可选参数
exitASAP可选参数,默认为false,如果为true,将对循环内的每个元素评估条件,可能导致在到达迭代结束之前退出。
- doWhile
语法:
doWhile(condition, counterName) {
myChain
}
condition是一个session function,返回值是boolean值
counterName可选参数
- asLongAsDuring
asLongAsDuring(condition, duration, counterName) {
myChain
}
condition是一个session function,返回值是boolean值
duration是一个整数或者一个duration expressed(500 milliseconds)
counterName可选参数
- forever
forever(counterName) {
myChain
}
counterName可选参数
条件语句
- doIf
支持***
doIf("${myBoolean}") {
// executed if the session value stored in "myBoolean" is true
exec(http("...").get("..."))
}
支持session表达式
doIf(session => session("myKey").as[String].startsWith("admin")) {
// executed if the session value stored in "myKey" starts with "admin"
exec(http("if true").get("..."))
}
- doIfEquals
doIfEquals("${actualValue}", "expectedValue") {
// executed if the session value stored in "actualValue" is equal to "expectedValue"
exec(http("...").get("..."))
}
- doIfOrElse
doIfOrElse(session => session("myKey").as[String].startsWith("admin")) {
// executed if the session value stored in "myKey" starts with "admin"
exec(http("if true").get("..."))
} {
// executed if the session value stored in "myKey" does not start with "admin"
exec(http("if false").get("..."))
}
- doIfEqualsOrElse
doIfEqualsOrElse(session => session("actualValue").as[String], "expectedValue") {
// executed if the session value stored in "actualValue" equals to "expectedValue"
exec(http("if true").get("..."))
} {
// executed if the session value stored in "actualValue" is not equal to "expectedValue"
exec(http("if false").get("..."))
}
- doSwitch
doSwitch("${myKey}")( // beware: use parentheses, not curly braces!
key1 -> chain1,
key1 -> chain2
)
- doSwitchOrElse
doSwitchOrElse("${myKey}")( // beware: use parentheses, not curly braces!
key1 -> chain1,
key1 -> chain2
)(
myFallbackChain
)
- randomSwitch
randomSwitch( // beware: use parentheses, not curly braces!
percentage1 -> chain1,
percentage2 -> chain2
)
- randomSwitchOrElse
randomSwitchOrElse( // beware: use parentheses, not curly braces!
percentage1 -> chain1,
percentage2 -> chain2
) {
myFallbackChain
}
- uniformRandomSwitch
uniformRandomSwitch( // beware: use parentheses, not curly braces!
chain1,
chain2
)
- roundRobinSwitch
roundRobinSwitch( // beware: use parentheses, not curly braces!
chain1,
chain2
)
错误处理
- tryMax
tryMax(times, counterName) {
myChain
}
counterName可选参数
- exitBlockOnFail
exitBlockOnFail {
myChain
}
- exitHereIfFailed
exitHereIfFailed
如果用户之前出现了错误,则从这里开始退出该场景。
组定义
group(groupName) {
myChain
}
协议定义
scn.inject(atOnceUsers(5)).protocols(httpProtocol)