1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
//! # Goose //! //! Have you ever been attacked by a goose? //! //! Goose is a load testing tool based on [Locust](https://locust.io/). //! User behavior is defined with standard Rust code. //! //! Goose load tests are built by creating an application with Cargo, //! and declaring a dependency on the Goose library. //! //! Goose uses the `reqwest::blocking` API to provide a convenient HTTP //! client. (Async support is on the roadmap, also provided through the //! `reqwest` library.) //! //! ## Creating and running a Goose load test //! //! ### Creating a simple Goose load test //! //! First create a new empty cargo application, for example: //! //! ```bash //! $ mkdir loadtest //! $ cd loadtest/ //! $ cargo init //! Created binary (application) package //! ``` //! //! Add Goose as a dependency in `Cargo.toml`: //! //! ```toml //! [dependencies] //! goose = "0.4" //! ``` //! //! Add the following boilerplate use declarations at the top of your `src/main.rs`: //! //! ```rust //! use goose::{goose_init, goose_launch}; //! use goose::goose::{GooseTest, GooseTaskSet, GooseClient, GooseTask}; //! ``` //! //! Below your `main` funcation (which currently is the default `Hello, world!`), add //! one or more load test functions. The names of these functions are arbitrary, but it is //! recommended you use self-documenting names. Each load test function must accept a mutable //! GooseClient pointer. For example: //! //! ```rust //! fn loadtest_foo(client: &mut GooseClient) { //! let _response = client.get("/path/to/foo"); //! } //! ``` //! //! In the above example, we're using the GooseClient helper method `get` to load a path //! on the website we are load testing. This helper creates a Reqwest request builder, and //! uses it to build and execute a request for the above path. If you want access to the //! request builder object, you can instead use the `goose_get` helper, for example to //! set a timout on this specific request: //! //! ```rust //! use std::time; //! //! fn loadtest_bar(client: &mut GooseClient) { //! let three_seconds = time::Duration::from_secs(3); //! let request_builder = client.goose_get("/path/to/bar"); //! let _response = client.goose_send(request_builder.timeout(three_seconds)); //! } //! ``` //! //! We pass the `request_builder` object to `goose_send` which builds and executes it, also //! collecting useful statistics which can be viewed with the `--print-stats` flag. //! //! Once all our tasks are created, we edit the main function to initialize goose and register //! the tasks. In this very simple example we only have two tasks to register, while in a real //! load test you can have any number of task sets with any number of individual tasks. //! //! ```goose //! fn main() { //! // Initialize Goose. //! let goose_state = goose_init(); //! //! // Initialize a single object to hold all our task sets. //! let mut goose_test = GooseTest::new(); //! //! // Create and configure our first task set. //! let mut loadtest_tasks = GooseTaskSet::new("LoadtestTasks") //! // Apply random sleep after each task runs. //! .set_wait_time(0, 3); //! //! // Register the foo task, assigning it a weight of 10. //! loadtest_tasks.register_task(GooseTask::new().set_weight(10).set_function(loadtest_foo)); //! // Register the bar task, assigning it a weight of 2 (so it runs 1/5 as //! // often as bar). Apply a task name which shows up in statistics. //! loadtest_tasks.register_task(GooseTask::named("bar").set_weight(2).set_function(loadtest_bar)); //! //! // Register our task set. //! goose_test.register_taskset(loadtest_tasks); //! //! // With all task sets and tasks registered, launch the load test. //! goose_launch(goose_state, goose_test); //! } //! ``` //! //! Goose now spins up a configurable number of clients, each simulating a user on your //! website. Thanks to Reqwest, each user maintains its own client state, handling cookies //! and more so your "users" can log in, fill out forms, and more, as real users on your //! sites would do. //! //! ### Running the Goose load test //! //! Attempts to run our example will result in an error, as we have not yet defined the //! host against which this loadtest should be run. We intentionally do not hard code the //! host in the individual tasks, as this allows us to run the test against different //! environments, such as local and staging. //! //! ```bash //! $ cargo run --release -- //! Compiling loadtest v0.1.0 (~/loadtest) //! Finished release [optimized] target(s) in 1.52s //! Running `target/release/loadtest` //! 05:33:06 [ERROR] Host must be defined globally or per-TaskSet. No host defined for LoadtestTasks. //! ``` //! Pass in the `-h` flag to see all available run-time options. For now, we'll use a few //! options to customize our load test. //! //! ```bash //! $ cargo run --release -- --host http://apache.fosciana --print-stats -t 30s -v //! ``` //! //! The first option we specified is `--host`, and in this case tells Goose to run the load test //! against an 8-core VM on my local network. The `--print-stats` flag configures Goose to collect //! statistics as the load test runs, printing running statistics during the test and final summary //! statistics when finished. The `-t 30s` option tells Goose to end the load test after 30 seconds //! (for real load tests you'll certainly want to run it longer, you can use `m` to specify minutes //! and `h` to specify hours. For example, `-t 1h30m` would run the load test for 1 hour 30 minutes). //! Finally, the `-v` flag tells goose to display INFO and higher level logs to stdout, giving more //! insight into what is happening. (Additional `-v` flags will result in considerably more debug //! output, and are not recommended for running actual load tests; they're only useful if you're //! trying to debug Goose itself.) //! //! Running the test results in the following output (broken up to explain it as it goes): //! //! ```bash //! Finished release [optimized] target(s) in 0.05s //! Running `target/release/loadtest --host 'http://apache.fosciana' --print-stats -t 30s -v` //! 05:56:30 [ INFO] Output verbosity level: INFO //! 05:56:30 [ INFO] Logfile verbosity level: INFO //! 05:56:30 [ INFO] Writing to log file: goose.log //! ``` //! //! By default Goose will write a log file with INFO and higher level logs into the same directory //! as you run the test from. //! //! ```bash //! 05:56:30 [ INFO] run_time = 30 //! 05:56:30 [ INFO] concurrent clients defaulted to 8 (number of CPUs) //! 05:56:30 [ INFO] hatch_rate defaulted to 8 (number of CPUs) //! ``` //! //! Goose will default to launching 1 client per available CPU core, and will launch them all in //! one second. You can change how many clients are launched with the `-c` option, and you can //! change how many clients are launched per second with the `-r` option. For example, `-c 30 -r 2` //! would launch 30 clients over 15 seconds, or two clients per second. //! //! ```bash //! 05:56:30 [ INFO] global host configured: http://apache.fosciana //! 05:56:30 [ INFO] launching client 1 from LoadtestTasks... //! 05:56:30 [ INFO] launching client 2 from LoadtestTasks... //! 05:56:30 [ INFO] launching client 3 from LoadtestTasks... //! 05:56:30 [ INFO] launching client 4 from LoadtestTasks... //! 05:56:30 [ INFO] launching client 5 from LoadtestTasks... //! 05:56:30 [ INFO] launching client 6 from LoadtestTasks... //! 05:56:30 [ INFO] launching client 7 from LoadtestTasks... //! 05:56:31 [ INFO] launching client 8 from LoadtestTasks... //! 05:56:31 [ INFO] launched 8 clients... //! ``` //! //! Each client is launched in its own thread with its own client state. Goose is able to make //! very efficient use of server resources. //! //! ```bash //! 05:56:46 [ INFO] printing running statistics after 15 seconds... //! ------------------------------------------------------------------------------ //! Name | # reqs | # fails | req/s | fail/s //! ----------------------------------------------------------------------------- //! GET /path/to/foo | 15,795 | 0 (0%) | 1,053 | 0 //! GET bar | 3,161 | 0 (0%) | 210 | 0 //! ------------------------+----------------+----------------+--------+--------- //! Aggregated | 18,956 | 0 (0%) | 1,263 | 0 //! ------------------------------------------------------------------------------ //! ``` //! //! When printing statistics, by default Goose will display running values approximately //! every 15 seconds. Running statistics are broken into two tables. The first, above, //! shows how many requests have been made, how many of them failed (non-2xx response), //! and the corresponding per-second rates. //! //! Note that Goose respected the per-task weights we set, and `foo` (with a weight of //! 10) is being loaded five times as often as `bar` (with a weight of 2). Also notice //! that because we didn't name the `foo` task by default we see the URL loaded in the //! statistics, whereas we did name the `bar` task so we see the name in the statistics. //! //! ```bash //! Name | Avg (ms) | Min | Max | Mean //! ----------------------------------------------------------------------------- //! GET /path/to/foo | 0.67 | 0.31 | 13.51 | 0.53 //! GET bar | 0.60 | 0.33 | 13.42 | 0.53 //! ------------------------+------------+------------+------------+------------- //! Aggregated | 0.66 | 0.31 | 13.51 | 0.56 //! ``` //! //! The second table in running statistics provides details on response times. In our //! example (which is running over wifi from my development laptop), on average each //! page is returning within `0.66` milliseconds. The quickest page response was for //! `foo` within `0.31` milliseconds. The slowest page response was also for `foo` within //! `13.51` milliseconds. //! //! //! ```bash //! 05:37:10 [ INFO] stopping after 30 seconds... //! 05:37:10 [ INFO] waiting for clients to exit //! ``` //! //! Our example only runs for 30 seconds, so we only see running statistics once. When //! the test completes, we get more detail in the final summary. The first two tables //! are the same as what we saw earlier, however now they include all statistics for the //! entire load test: //! //! ```bash //! ------------------------------------------------------------------------------ //! Name | # reqs | # fails | req/s | fail/s //! ----------------------------------------------------------------------------- //! GET bar | 6,050 | 0 (0%) | 201 | 0 //! GET /path/to/foo | 30,257 | 0 (0%) | 1,008 | 0 //! ------------------------+----------------+----------------+--------+---------- //! Aggregated | 36,307 | 0 (0%) | 1,210 | 0 //! ------------------------------------------------------------------------------- //! Name | Avg (ms) | Min | Max | Mean //! ----------------------------------------------------------------------------- //! GET bar | 0.66 | 0.32 | 108.87 | 0.53 //! GET /path/to/foo | 0.68 | 0.31 | 109.50 | 0.53 //! ------------------------+------------+------------+------------+------------- //! Aggregated | 0.67 | 0.31 | 109.50 | 0.50 //! ------------------------------------------------------------------------------- //! ``` //! //! The ratio between `foo` and `bar` remained 5:2 as expected. As the test ran, //! however, we saw some slower page loads, with the slowest again `foo` this time //! at `109.50` milliseconds. //! //! ```bash //! Slowest page load within specified percentile of requests (in ms): //! ------------------------------------------------------------------------------ //! Name | 50% | 75% | 98% | 99% | 99.9% | 99.99% //! ----------------------------------------------------------------------------- //! GET bar | 0.53 | 0.66 | 2.17 | 5.37 | 18.72 | 123.16 //! GET /path/to/foo | 0.53 | 0.66 | 2.65 | 10.60 | 18.00 | 107.32 //! ------------------------+------------+------------+------------+------------- //! Aggregated | 0.53 | 0.66 | 2.37 | 6.45 | 18.32 | 108.18 //! ``` //! //! A new table shows additional information, breaking down response-time by //! percentile. This shows that the slowest page loads only happened in the //! slowest .001% of page loads, so were very much an edge case. 99.9% of the time //! page loads happened in less than 20 milliseconds. #[macro_use] extern crate log; //#[macro_use] //extern crate goose_codegen; extern crate structopt; pub mod goose; mod client; mod stats; mod util; use std::collections::{BTreeMap, HashMap}; use std::f32; use std::fs::File; use std::path::PathBuf; use std::sync::{Arc, mpsc}; use std::sync::atomic::{AtomicBool, Ordering}; use std::{thread, time}; use rand::thread_rng; use rand::seq::SliceRandom; use simplelog::*; use structopt::StructOpt; use url::Url; use goose::{GooseTest, GooseTaskSet, GooseTask, GooseClient, GooseClientMode, GooseClientCommand, GooseRequest}; /// Global state for Goose loadtest. #[derive(Debug, Clone)] pub struct GooseState { configuration: Configuration, number_of_cpus: usize, run_time: usize, clients: usize, active_clients: usize, } /// Goose global state is initialized by calling GooseState::new(configuration). impl GooseState { fn new(configuration: Configuration) -> GooseState { GooseState { configuration: configuration, number_of_cpus: num_cpus::get(), run_time: 0, clients: 0, active_clients: 0, } } } /// Configuration options available when launching a Goose loadtest. #[derive(StructOpt, Debug, Clone)] #[structopt(name = "client")] pub struct Configuration { /// Host to load test in the following format: http://10.21.32.33 #[structopt(short = "H", long, required=false, default_value="")] host: String, ///// Rust module file to import, e.g. '../other.rs'. //#[structopt(short = "f", long, default_value="goosefile")] //goosefile: String, /// Number of concurrent Goose users (defaults to available CPUs). #[structopt(short, long)] clients: Option<usize>, /// How many users to spawn per second (defaults to available CPUs). #[structopt(short = "r", long)] hatch_rate: Option<usize>, /// Stop after the specified amount of time, e.g. (300s, 20m, 3h, 1h30m, etc.). #[structopt(short = "t", long, required=false, default_value="")] run_time: String, /// Prints stats in the console #[structopt(long)] print_stats: bool, /// Includes status code counts in console stats #[structopt(long)] status_codes: bool, /// Only prints summary stats #[structopt(long)] only_summary: bool, /// Resets statistics once hatching has been completed #[structopt(long)] reset_stats: bool, /// Shows list of all possible Goose tasks and exits #[structopt(short, long)] list: bool, //// Number of seconds to wait for a simulated user to complete any executing task before exiting. Default is to terminate immediately. //#[structopt(short, long, required=false, default_value="0")] //stop_timeout: usize, // The number of occurrences of the `v/verbose` flag /// Debug level (-v, -vv, -vvv, etc.) #[structopt(short = "v", long, parse(from_occurrences))] verbose: u8, // The number of occurrences of the `g/log-level` flag /// Log level (-g, -gg, -ggg, etc.) #[structopt(short = "g", long, parse(from_occurrences))] log_level: u8, #[structopt(long, default_value="goose.log")] log_file: String, } /// Allocate a vector of weighted GooseClient fn weight_task_set_clients(task_sets: &GooseTest, clients: usize, state: &GooseState) -> Vec<GooseClient> { trace!("weight_task_set_clients"); let mut u: usize = 0; let mut v: usize; for task_set in &task_sets.task_sets { if u == 0 { u = task_set.weight; } else { v = task_set.weight; trace!("calculating greatest common denominator of {} and {}", u, v); u = util::gcd(u, v); trace!("inner gcd: {}", u); } } // 'u' will always be the greatest common divisor debug!("gcd: {}", u); // Build a weighted lists of task sets (identified by index) let mut weighted_task_sets = Vec::new(); for (index, task_set) in task_sets.task_sets.iter().enumerate() { // divide by greatest common divisor so vector is as short as possible let weight = task_set.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", index, task_set.name, task_set.weight, weight); let mut weighted_sets = vec![index; weight]; weighted_task_sets.append(&mut weighted_sets); } // Shuffle the weighted list of task sets weighted_task_sets.shuffle(&mut thread_rng()); // Allocate a state for each client that will be spawned. info!("initializing client states..."); let mut weighted_clients = Vec::new(); let mut client_count = 0; let config = state.configuration.clone(); loop { for task_sets_index in &weighted_task_sets { let task_set_host = task_sets.task_sets[*task_sets_index].host.clone(); weighted_clients.push(GooseClient::new( client_count, task_sets.task_sets[*task_sets_index].task_sets_index, task_set_host, task_sets.task_sets[*task_sets_index].min_wait, task_sets.task_sets[*task_sets_index].max_wait, &config )); client_count += 1; if client_count >= clients { trace!("created {} weighted_clients", client_count); return weighted_clients; } } } } /// Returns a sequenced bucket of weighted usize pointers to Goose Tasks fn weight_tasks(task_set: &GooseTaskSet) -> (Vec<Vec<usize>>, Vec<Vec<usize>>, Vec<Vec<usize>>) { trace!("weight_tasks for {}", task_set.name); // A BTreeMap of Vectors allows us to group and sort tasks per sequence value. let mut sequenced_tasks: BTreeMap <usize, Vec<GooseTask>> = BTreeMap::new(); let mut sequenced_on_start_tasks: BTreeMap <usize, Vec<GooseTask>> = BTreeMap::new(); let mut sequenced_on_stop_tasks: BTreeMap <usize, Vec<GooseTask>> = BTreeMap::new(); let mut unsequenced_tasks: Vec<GooseTask> = Vec::new(); let mut unsequenced_on_start_tasks: Vec<GooseTask> = Vec::new(); let mut unsequenced_on_stop_tasks: Vec<GooseTask> = Vec::new(); let mut u: usize = 0; let mut v: usize; // Handle ordering of tasks. for task in &task_set.tasks { if task.sequence > 0 { if task.on_start { if let Some(sequence) = sequenced_on_start_tasks.get_mut(&task.sequence) { // This is another task with this order value. sequence.push(task.clone()); } else { // This is the first task with this order value. sequenced_on_start_tasks.insert(task.sequence, vec![task.clone()]); } } // Allow a task to be both on_start and on_stop. if task.on_stop { if let Some(sequence) = sequenced_on_stop_tasks.get_mut(&task.sequence) { // This is another task with this order value. sequence.push(task.clone()); } else { // This is the first task with this order value. sequenced_on_stop_tasks.insert(task.sequence, vec![task.clone()]); } } if !task.on_start && !task.on_stop { if let Some(sequence) = sequenced_tasks.get_mut(&task.sequence) { // This is another task with this order value. sequence.push(task.clone()); } else { // This is the first task with this order value. sequenced_tasks.insert(task.sequence, vec![task.clone()]); } } } else { if task.on_start { unsequenced_on_start_tasks.push(task.clone()); } if task.on_stop { unsequenced_on_stop_tasks.push(task.clone()); } if !task.on_start && !task.on_stop { unsequenced_tasks.push(task.clone()); } } // Look for lowest common divisor amongst all tasks of any weight. if u == 0 { u = task.weight; } else { v = task.weight; trace!("calculating greatest common denominator of {} and {}", u, v); u = util::gcd(u, v); trace!("inner gcd: {}", u); } } // 'u' will always be the greatest common divisor debug!("gcd: {}", u); // Apply weight to sequenced tasks. let mut weighted_tasks: Vec<Vec<usize>> = Vec::new(); for (_sequence, tasks) in sequenced_tasks.iter() { let mut sequence_weighted_tasks = Vec::new(); for task in tasks { // divide by greatest common divisor so bucket is as small as possible let weight = task.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", task.tasks_index, task.name, task.weight, weight); let mut tasks = vec![task.tasks_index; weight]; sequence_weighted_tasks.append(&mut tasks); } weighted_tasks.push(sequence_weighted_tasks); } // Apply weight to unsequenced tasks. trace!("created weighted_tasks: {:?}", weighted_tasks); let mut weighted_unsequenced_tasks = Vec::new(); for task in unsequenced_tasks { // divide by greatest common divisor so bucket is as small as possible let weight = task.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", task.tasks_index, task.name, task.weight, weight); let mut tasks = vec![task.tasks_index; weight]; weighted_unsequenced_tasks.append(&mut tasks); } // Unsequenced tasks come lost. weighted_tasks.push(weighted_unsequenced_tasks); // Apply weight to on_start sequenced tasks. let mut weighted_on_start_tasks: Vec<Vec<usize>> = Vec::new(); for (_sequence, tasks) in sequenced_on_start_tasks.iter() { let mut sequence_on_start_weighted_tasks = Vec::new(); for task in tasks { // divide by greatest common divisor so bucket is as small as possible let weight = task.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", task.tasks_index, task.name, task.weight, weight); let mut tasks = vec![task.tasks_index; weight]; sequence_on_start_weighted_tasks.append(&mut tasks); } weighted_on_start_tasks.push(sequence_on_start_weighted_tasks); } // Apply weight to unsequenced on_start tasks. trace!("created weighted_on_start_tasks: {:?}", weighted_tasks); let mut weighted_on_start_unsequenced_tasks = Vec::new(); for task in unsequenced_on_start_tasks { // divide by greatest common divisor so bucket is as small as possible let weight = task.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", task.tasks_index, task.name, task.weight, weight); let mut tasks = vec![task.tasks_index; weight]; weighted_on_start_unsequenced_tasks.append(&mut tasks); } // Unsequenced tasks come lost. weighted_on_start_tasks.push(weighted_on_start_unsequenced_tasks); // Apply weight to on_stop sequenced tasks. let mut weighted_on_stop_tasks: Vec<Vec<usize>> = Vec::new(); for (_sequence, tasks) in sequenced_on_stop_tasks.iter() { let mut sequence_on_stop_weighted_tasks = Vec::new(); for task in tasks { // divide by greatest common divisor so bucket is as small as possible let weight = task.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", task.tasks_index, task.name, task.weight, weight); let mut tasks = vec![task.tasks_index; weight]; sequence_on_stop_weighted_tasks.append(&mut tasks); } weighted_on_stop_tasks.push(sequence_on_stop_weighted_tasks); } // Apply weight to unsequenced on_stop tasks. trace!("created weighted_on_stop_tasks: {:?}", weighted_tasks); let mut weighted_on_stop_unsequenced_tasks = Vec::new(); for task in unsequenced_on_stop_tasks { // divide by greatest common divisor so bucket is as small as possible let weight = task.weight / u; trace!("{}: {} has weight of {} (reduced with gcd to {})", task.tasks_index, task.name, task.weight, weight); let mut tasks = vec![task.tasks_index; weight]; weighted_on_stop_unsequenced_tasks.append(&mut tasks); } // Unsequenced tasks come last. weighted_on_stop_tasks.push(weighted_on_stop_unsequenced_tasks); (weighted_on_start_tasks, weighted_tasks, weighted_on_stop_tasks) } fn is_valid_host(host: &str) -> bool { match Url::parse(host) { Ok(_) => true, Err(e) => { error!("invalid host '{}': {}", host, e); std::process::exit(1); } } } /// If run_time was specified, detect when it's time to shut down fn timer_expired(started: time::Instant, run_time: usize) -> bool { if run_time > 0 && started.elapsed().as_secs() >= run_time as u64 { true } else { false } } /// Merge per-client-statistics from client thread into global parent statistics fn merge_from_client( parent_request: &GooseRequest, client_request: &GooseRequest, config: &Configuration, ) -> GooseRequest { // Make a mutable copy where we can merge things let mut merged_request = parent_request.clone(); merged_request.response_times.extend_from_slice(&client_request.response_times); merged_request.success_count += &client_request.success_count; merged_request.fail_count += &client_request.fail_count; // Only accrue overhead of merging status_code_counts if we're going to display the results if config.status_codes { for (status_code, count) in &client_request.status_code_counts { let new_count; // Add client count into global count if let Some(existing_status_code_count) = merged_request.status_code_counts.get(&status_code) { new_count = *existing_status_code_count + *count; } // No global count exists yet, so start with client count else { new_count = *count; } merged_request.status_code_counts.insert(*status_code, new_count); } } merged_request } pub fn goose_init() -> GooseState { let mut goose_state = GooseState::new(Configuration::from_args()); // Allow optionally controlling debug output level let debug_level; match goose_state.configuration.verbose { 0 => debug_level = LevelFilter::Warn, 1 => debug_level = LevelFilter::Info, 2 => debug_level = LevelFilter::Debug, _ => debug_level = LevelFilter::Trace, } // Allow optionally controlling log level let log_level; match goose_state.configuration.log_level { 0 => log_level = LevelFilter::Info, 1 => log_level = LevelFilter::Debug, _ => log_level = LevelFilter::Trace, } let log_file = PathBuf::from(&goose_state.configuration.log_file); CombinedLogger::init(vec![ TermLogger::new( debug_level, Config::default(), TerminalMode::Mixed).unwrap(), WriteLogger::new( log_level, Config::default(), File::create(&log_file).unwrap(), )]).unwrap(); info!("Output verbosity level: {}", debug_level); info!("Logfile verbosity level: {}", log_level); info!("Writing to log file: {}", log_file.display()); // Don't allow overhead of collecting status codes unless we're printing statistics. if goose_state.configuration.status_codes && !goose_state.configuration.print_stats { error!("You must enable --print-stats to enable --status-codes."); std::process::exit(1); } // Don't allow overhead of collecting statistics unless we're printing them. if goose_state.configuration.only_summary && !goose_state.configuration.print_stats { error!("You must enable --print-stats to enable --only-summary."); std::process::exit(1); } // Configure maximum run time if specified, otherwise run until canceled. if goose_state.configuration.run_time != "" { goose_state.run_time = util::parse_timespan(&goose_state.configuration.run_time); } else { goose_state.run_time = 0; } info!("run_time = {}", goose_state.run_time); // Configure number of client threads to launch, default to the number of CPU cores available. goose_state.clients = match goose_state.configuration.clients { Some(c) => { if c == 0 { error!("At least 1 client is required."); std::process::exit(1); } else { c } } None => { let c = goose_state.number_of_cpus; info!("concurrent clients defaulted to {} (number of CPUs)", c); c } }; debug!("clients = {}", goose_state.clients); goose_state } pub fn goose_launch(mut goose_state: GooseState, mut goose_test: GooseTest) { // At least one task set is required. if goose_test.task_sets.len() <= 0 { error!("No task sets defined in goosefile."); std::process::exit(1); } if goose_state.configuration.list { // Display task sets and tasks, then exit. println!("Available tasks:"); for task_set in goose_test.task_sets { println!(" - {} (weight: {})", task_set.name, task_set.weight); for task in task_set.tasks { println!(" o {} (weight: {})", task.name, task.weight); } } std::process::exit(0); } // Configure number of client threads to launch per second, default to the number of CPU cores available. let hatch_rate = match goose_state.configuration.hatch_rate { Some(h) => { if h == 0 { error!("The hatch_rate must be greater than 0, and generally should be no more than 100 * NUM_CORES."); std::process::exit(1); } else { h } } None => { let h = goose_state.number_of_cpus; info!("hatch_rate defaulted to {} (number of CPUs)", h); h } }; debug!("hatch_rate = {}", hatch_rate); // Confirm there's either a global host, or each task set has a host defined. if goose_state.configuration.host.len() == 0 { for task_set in &goose_test.task_sets { match &task_set.host { Some(h) => { if is_valid_host(h) { info!("host for {} configured: {}", task_set.name, h); } } None => { error!("Host must be defined globally or per-TaskSet. No host defined for {}.", task_set.name); std::process::exit(1); } } } } else { if is_valid_host(&goose_state.configuration.host) { info!("global host configured: {}", goose_state.configuration.host); } } // Apply weights to tasks in each task set. for task_set in &mut goose_test.task_sets { let (weighted_on_start_tasks, weighted_tasks, weighted_on_stop_tasks) = weight_tasks(&task_set); task_set.weighted_on_start_tasks = weighted_on_start_tasks; task_set.weighted_tasks = weighted_tasks; task_set.weighted_on_stop_tasks = weighted_on_stop_tasks; debug!("weighted {} on_start: {:?} tasks: {:?} on_stop: {:?}", task_set.name, task_set.weighted_on_start_tasks, task_set.weighted_tasks, task_set.weighted_on_stop_tasks); } // Allocate a state for each of the clients we are about to start. goose_test.weighted_clients = weight_task_set_clients(&goose_test, goose_state.clients, &goose_state); // Our load test is officially starting. let mut started = time::Instant::now(); // Spawn clients at hatch_rate per second, or one every 1 / hatch_rate fraction of a second. let sleep_float = 1.0 / hatch_rate as f32; let sleep_duration = time::Duration::from_secs_f32(sleep_float); // Collect client threads in a vector for when we want to stop them later. let mut clients = vec![]; // Collect client thread channels in a vector so we can talk to the client threads. let mut client_channels = vec![]; // Create a single channel allowing all Goose child threads to sync state back to parent let (all_threads_sender, parent_receiver): (mpsc::Sender<GooseClient>, mpsc::Receiver<GooseClient>) = mpsc::channel(); // Spawn clients, each with their own weighted task_set. for mut thread_client in goose_test.weighted_clients.clone() { // Stop launching threads if the run_timer has expired. if timer_expired(started, goose_state.run_time) { break; } // Copy weighted tasks and weighted on start tasks into the client thread. thread_client.weighted_tasks = goose_test.task_sets[thread_client.task_sets_index].weighted_tasks.clone(); thread_client.weighted_on_start_tasks = goose_test.task_sets[thread_client.task_sets_index].weighted_on_start_tasks.clone(); thread_client.weighted_on_stop_tasks = goose_test.task_sets[thread_client.task_sets_index].weighted_on_stop_tasks.clone(); // Remember which task group this client is using. thread_client.weighted_clients_index = goose_state.active_clients; // Create a per-thread channel allowing parent thread to control child threads. let (parent_sender, thread_receiver): (mpsc::Sender<GooseClientCommand>, mpsc::Receiver<GooseClientCommand>) = mpsc::channel(); client_channels.push(parent_sender); // We can only launch tasks if the task list is non-empty if thread_client.weighted_tasks.len() > 0 { // Copy the client-to-parent sender channel, used by all threads. let thread_sender = all_threads_sender.clone(); // Hatching a new Goose client. thread_client.set_mode(GooseClientMode::HATCHING); // Notify parent that our run mode has changed to Hatching. thread_sender.send(thread_client.clone()).unwrap(); // Copy the appropriate task_set into the thread. let thread_task_set = goose_test.task_sets[thread_client.task_sets_index].clone(); // We number threads from 1 as they're human-visible (in the logs), whereas active_clients starts at 0. let thread_number = goose_state.active_clients + 1; // Launch a new client. let client = thread::spawn(move || { client::client_main(thread_number, thread_task_set, thread_client, thread_receiver, thread_sender) }); clients.push(client); goose_state.active_clients += 1; debug!("sleeping {:?} milliseconds...", sleep_duration); thread::sleep(sleep_duration); } } // Restart the timer now that all threads are launched. started = time::Instant::now(); info!("launched {} clients...", goose_state.active_clients); // Ensure we have request statistics when we're displaying running statistics. if goose_state.configuration.print_stats && !goose_state.configuration.only_summary { for (index, send_to_client) in client_channels.iter().enumerate() { send_to_client.send(GooseClientCommand::SYNC).unwrap(); debug!("telling client {} to sync stats", index); } } // Track whether or not we've (optionally) reset the statistics after all clients started. let mut statistics_reset: bool = false; // Catch ctrl-c to allow clean shutdown to display statistics. let canceled = Arc::new(AtomicBool::new(false)); let caught_ctrlc = canceled.clone(); match ctrlc::set_handler(move || { // We've caught a ctrl-c, determine if it's the first time or an additional time. if caught_ctrlc.load(Ordering::SeqCst) { warn!("caught another ctrl-c, exiting immediately..."); std::process::exit(1); } else { warn!("caught ctrl-c, stopping..."); caught_ctrlc.store(true, Ordering::SeqCst); } }) { Ok(_) => (), Err(e) => { warn!("failed to set ctrl-c handler: {}", e); } } // Determine when to display running statistics (if enabled). let mut statistics_timer = time::Instant::now(); let mut display_running_statistics = false; // Move into a local variable, actual run_time may be less due to SIGINT (ctrl-c). let mut run_time = goose_state.run_time; loop { // When displaying running statistics, sync data from client threads first. if goose_state.configuration.print_stats { // Synchronize statistics from client threads into parent. if timer_expired(statistics_timer, 15) { statistics_timer = time::Instant::now(); for (index, send_to_client) in client_channels.iter().enumerate() { send_to_client.send(GooseClientCommand::SYNC).unwrap(); debug!("telling client {} to sync stats", index); } if !goose_state.configuration.only_summary { display_running_statistics = true; // Give client threads time to send statstics. let pause = time::Duration::from_millis(100); thread::sleep(pause); } } // Load messages from client threads until the receiver queue is empty. let mut message = parent_receiver.try_recv(); while message.is_ok() { // Messages contain per-client statistics: merge them into the global statistics. let unwrapped_message = message.unwrap(); let weighted_clients_index = unwrapped_message.weighted_clients_index; goose_test.weighted_clients[weighted_clients_index].weighted_bucket = unwrapped_message.weighted_bucket; goose_test.weighted_clients[weighted_clients_index].weighted_bucket_position = unwrapped_message.weighted_bucket_position; goose_test.weighted_clients[weighted_clients_index].mode = unwrapped_message.mode; // If our local copy of the task set doesn't have tasks, clone them from the remote thread if goose_test.weighted_clients[weighted_clients_index].weighted_tasks.len() == 0 { goose_test.weighted_clients[weighted_clients_index].weighted_clients_index = unwrapped_message.weighted_clients_index; goose_test.weighted_clients[weighted_clients_index].weighted_tasks = unwrapped_message.weighted_tasks.clone(); } // Syncronize client requests for (request_key, request) in unwrapped_message.requests { trace!("request_key: {}", request_key); let merged_request; if let Some(parent_request) = goose_test.weighted_clients[weighted_clients_index].requests.get(&request_key) { merged_request = merge_from_client(parent_request, &request, &goose_state.configuration); } else { // First time seeing this request, simply insert it. merged_request = request.clone(); } goose_test.weighted_clients[weighted_clients_index].requests.insert(request_key.to_string(), merged_request); } message = parent_receiver.try_recv(); } // Flush statistics collected prior to all client threads running if goose_state.configuration.reset_stats && !statistics_reset { info!("statistics reset..."); for (client_index, client) in goose_test.weighted_clients.clone().iter().enumerate() { let mut reset_client = client.clone(); // Start again with an empty requests hashmap. reset_client.requests = HashMap::new(); goose_test.weighted_clients[client_index] = reset_client; } statistics_reset = true; } } if timer_expired(started, run_time) || canceled.load(Ordering::SeqCst) { run_time = started.elapsed().as_secs() as usize; info!("stopping after {} seconds...", run_time); for (index, send_to_client) in client_channels.iter().enumerate() { send_to_client.send(GooseClientCommand::EXIT).unwrap(); debug!("telling client {} to sync stats", index); } info!("waiting for clients to exit"); for client in clients { let _ = client.join(); } debug!("all clients exited"); // If we're printing statistics, collect the final messages received from clients if goose_state.configuration.print_stats { let mut message = parent_receiver.try_recv(); while message.is_ok() { let unwrapped_message = message.unwrap(); let weighted_clients_index = unwrapped_message.weighted_clients_index; goose_test.weighted_clients[weighted_clients_index].mode = unwrapped_message.mode; // Syncronize client requests for (request_key, request) in unwrapped_message.requests { trace!("request_key: {}", request_key); let merged_request; if let Some(parent_request) = goose_test.weighted_clients[weighted_clients_index].requests.get(&request_key) { merged_request = merge_from_client(parent_request, &request, &goose_state.configuration); } else { // First time seeing this request, simply insert it. merged_request = request.clone(); } goose_test.weighted_clients[weighted_clients_index].requests.insert(request_key.to_string(), merged_request); } message = parent_receiver.try_recv(); } } // All clients are done, exit out of loop for final cleanup. break; } // If enabled, display running statistics after sync if display_running_statistics { display_running_statistics = false; stats::print_running_stats(&goose_state.configuration, &goose_test, started.elapsed().as_secs() as usize); } let one_second = time::Duration::from_secs(1); thread::sleep(one_second); } if goose_state.configuration.print_stats { stats::print_final_stats(&goose_state.configuration, &goose_test, started.elapsed().as_secs() as usize); } }