2020-08-18 23:21:54 +03:00
<!DOCTYPE HTML>
< html lang = "en" class = "sidebar-visible no-js light" >
< head >
<!-- Book generated using mdBook -->
< meta charset = "UTF-8" >
< title > API - A/B Street< / title >
< meta content = "text/html; charset=utf-8" http-equiv = "Content-Type" >
< meta name = "description" content = "" >
< meta name = "viewport" content = "width=device-width, initial-scale=1" >
< meta name = "theme-color" content = "#ffffff" / >
2020-08-26 22:53:16 +03:00
< link rel = "shortcut icon" href = "../favicon.png" >
< link rel = "stylesheet" href = "../css/variables.css" >
< link rel = "stylesheet" href = "../css/general.css" >
< link rel = "stylesheet" href = "../css/chrome.css" >
< link rel = "stylesheet" href = "../css/print.css" media = "print" >
2020-08-18 23:21:54 +03:00
<!-- Fonts -->
2020-08-26 22:53:16 +03:00
< link rel = "stylesheet" href = "../FontAwesome/css/font-awesome.css" >
2020-08-18 23:21:54 +03:00
< link href = "https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel = "stylesheet" type = "text/css" >
< link href = "https://fonts.googleapis.com/css?family=Source+Code+Pro:500" rel = "stylesheet" type = "text/css" >
<!-- Highlight.js Stylesheets -->
2020-08-26 22:53:16 +03:00
< link rel = "stylesheet" href = "../highlight.css" >
< link rel = "stylesheet" href = "../tomorrow-night.css" >
< link rel = "stylesheet" href = "../ayu-highlight.css" >
2020-08-18 23:21:54 +03:00
<!-- Custom theme stylesheets -->
< / head >
< body >
<!-- Provide site root to javascript -->
< script type = "text/javascript" >
2020-08-26 22:53:16 +03:00
var path_to_root = "../";
2020-08-18 23:21:54 +03:00
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "light" : "light";
< / script >
<!-- Work around some values being stored in localStorage wrapped in quotes -->
< script type = "text/javascript" >
try {
var theme = localStorage.getItem('mdbook-theme');
var sidebar = localStorage.getItem('mdbook-sidebar');
if (theme.startsWith('"') & & theme.endsWith('"')) {
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
}
if (sidebar.startsWith('"') & & sidebar.endsWith('"')) {
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
}
} catch (e) { }
< / script >
<!-- Set the theme before any content is loaded, prevents flash -->
< script type = "text/javascript" >
var theme;
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
if (theme === null || theme === undefined) { theme = default_theme; }
var html = document.querySelector('html');
html.classList.remove('no-js')
html.classList.remove('light')
html.classList.add(theme);
html.classList.add('js');
< / script >
<!-- Hide / unhide sidebar before it is displayed -->
< script type = "text/javascript" >
var html = document.querySelector('html');
var sidebar = 'hidden';
if (document.body.clientWidth >= 1080) {
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
sidebar = sidebar || 'visible';
}
html.classList.remove('sidebar-visible');
html.classList.add("sidebar-" + sidebar);
< / script >
< nav id = "sidebar" class = "sidebar" aria-label = "Table of contents" >
< div class = "sidebar-scrollbox" >
2020-09-15 23:45:13 +03:00
< ol class = "chapter" > < li class = "chapter-item expanded " > < a href = "../index.html" > < strong aria-hidden = "true" > 1.< / strong > Overview< / a > < / li > < li class = "chapter-item expanded " > < a href = "../howto/index.html" > < strong aria-hidden = "true" > 2.< / strong > Instructions< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../howto/map_parking.html" > < strong aria-hidden = "true" > 2.1.< / strong > How to map on-street parking< / a > < / li > < li class = "chapter-item expanded " > < a href = "../howto/new_city.html" > < strong aria-hidden = "true" > 2.2.< / strong > Importing a new city< / a > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "../how_it_works.html" > < strong aria-hidden = "true" > 3.< / strong > How it works< / a > < / li > < li class = "chapter-item expanded " > < a href = "../case_studies/index.html" > < strong aria-hidden = "true" > 4.< / strong > Case studies< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../case_studies/lake_wash.html" > < strong aria-hidden = "true" > 4.1.< / strong > Lake Washington Blvd Stay Healthy Street< / a > < / li > < li class = "chapter-item expanded " > < a href = "../case_studies/west_seattle.html" > < strong aria-hidden = "true" > 4.2.< / strong > West Seattle mitigations< / a > < / li > < li class = "spacer" > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "../dev/index.html" > < strong aria-hidden = "true" > 5.< / strong > Developer guide< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../dev/misc_tricks.html" > < strong aria-hidden = "true" > 5.1.< / strong > Misc developer tricks< / a > < / li > < li class = "chapter-item expanded " > < a href = "../dev/api.html" class = "active" > < strong aria-hidden = "true" > 5.2.< / strong > API< / a > < / li > < li class = "chapter-item expanded " > < a href = "../dev/testing.html" > < strong aria-hidden = "true" > 5.3.< / strong > Testing< / a > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "../map/index.html" > < strong aria-hidden = "true" > 6.< / strong > Map model< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../map/importing/index.html" > < strong aria-hidden = "true" > 6.1.< / strong > Importing< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../map/importing/convert_osm.html" > < strong aria-hidden = "true" > 6.1.1.< / strong > convert_osm< / a > < / li > < li class = "chapter-item expanded " > < a href = "../map/importing/geometry.html" > < strong aria-hidden = "true" > 6.1.2.< / strong > Road/intersection geometry< / a > < / li > < li class = "chapter-item expanded " > < a href = "../map/importing/rest.html" > < strong aria-hidden = "true" > 6.1.3.< / strong > The rest< / a > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "../map/edits.html" > < strong aria-hidden = "true" > 6.2.< / strong > Live edits< / a > < / li > < li class = "chapter-item expanded " > < a href = "../map/misc.html" > < strong aria-hidden = "true" > 6.3.< / strong > Misc< / a > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "../trafficsim/index.html" > < strong aria-hidden = "true" > 7.< / strong > Traffic simulation< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../trafficsim/discrete_event.html" > < strong aria-hidden = "true" > 7.1.< / strong > Discrete event simulation< / a > < / li > < li class = "chapter-item expanded " > < a href = "../trafficsim/travel_demand.html" > < strong aria-hidden = "true" > 7.2.< / strong > Travel demand< / a > < / li > < li class = "chapter-item expanded " > < a href = "../trafficsim/gridlock.html" > < strong aria-hidden = "true" > 7.3.< / strong > Gridlock< / a > < / li > < li class = "chapter-item expanded " > < a href = "../trafficsim/trips.html" > < strong aria-hidden = "true" > 7.4.< / strong > Multi-modal trips< / a > < / li > < li class = "chapter-item expanded " > < a href = "../trafficsim/live_edits.html" > < strong aria-hidden = "true" > 7.5.< / strong > Live edits< / a > < / li > < li class = "chapter-item expanded " > < a href = "../trafficsim/parking.html" > < strong aria-hidden = "true" > 7.6.< / strong > Parking< / a > < / li > < li class = "spacer" > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "../project/index.html" > < strong aria-hidden = "true" > 8.< / strong > Project< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "../project/roadmap.html" > < strong aria-hidden = "true" > 8.1.< / strong > Roadmap< / a > < / li > < li class = "chapter-item expanded
2020-08-18 23:21:54 +03:00
< / div >
< div id = "sidebar-resize-handle" class = "sidebar-resize-handle" > < / div >
< / nav >
< div id = "page-wrapper" class = "page-wrapper" >
< div class = "page" >
< div id = "menu-bar-hover-placeholder" > < / div >
< div id = "menu-bar" class = "menu-bar sticky bordered" >
< div class = "left-buttons" >
< button id = "sidebar-toggle" class = "icon-button" type = "button" title = "Toggle Table of Contents" aria-label = "Toggle Table of Contents" aria-controls = "sidebar" >
< i class = "fa fa-bars" > < / i >
< / button >
< button id = "theme-toggle" class = "icon-button" type = "button" title = "Change theme" aria-label = "Change theme" aria-haspopup = "true" aria-expanded = "false" aria-controls = "theme-list" >
< i class = "fa fa-paint-brush" > < / i >
< / button >
< ul id = "theme-list" class = "theme-popup" aria-label = "Themes" role = "menu" >
< li role = "none" > < button role = "menuitem" class = "theme" id = "light" > Light (default)< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "rust" > Rust< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "coal" > Coal< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "navy" > Navy< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "ayu" > Ayu< / button > < / li >
< / ul >
< button id = "search-toggle" class = "icon-button" type = "button" title = "Search. (Shortkey: s)" aria-label = "Toggle Searchbar" aria-expanded = "false" aria-keyshortcuts = "S" aria-controls = "searchbar" >
< i class = "fa fa-search" > < / i >
< / button >
< / div >
< h1 class = "menu-title" > A/B Street< / h1 >
< div class = "right-buttons" >
2020-08-26 22:53:16 +03:00
< a href = "../print.html" title = "Print this book" aria-label = "Print this book" >
2020-08-18 23:21:54 +03:00
< i id = "print-button" class = "fa fa-print" > < / i >
< / a >
< / div >
< / div >
< div id = "search-wrapper" class = "hidden" >
< form id = "searchbar-outer" class = "searchbar-outer" >
< input type = "search" name = "search" id = "searchbar" name = "searchbar" placeholder = "Search this book ..." aria-controls = "searchresults-outer" aria-describedby = "searchresults-header" >
< / form >
< div id = "searchresults-outer" class = "searchresults-outer hidden" >
< div id = "searchresults-header" class = "searchresults-header" > < / div >
< ul id = "searchresults" >
< / ul >
< / div >
< / div >
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
< script type = "text/javascript" >
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
});
< / script >
< div id = "content" class = "content" >
< main >
< h1 > < a class = "header" href = "#api" id = "api" > API< / a > < / h1 >
< p > Suppose you're tired of manually fiddling with traffic signals, and you want to
use machine learning to do it. You can run A/B Street without graphics and
automatically control it through an API.< / p >
2020-09-10 22:02:21 +03:00
< h2 > < a class = "header" href = "#examples" id = "examples" > Examples< / a > < / h2 >
2020-08-18 23:21:54 +03:00
< p > This
< a href = "https://github.com/dabreegster/abstreet/blob/master/headless/examples/python_client.py" > Python example< / a >
has everything you need to get started.< / p >
2020-09-10 22:02:21 +03:00
< p > Also check out the
< a href = "https://github.com/dabreegster/abstreet/blob/master/headless/examples/go_client.go" > Go example< / a > ,
which demonstrates just a few of the API calls.< / p >
2020-08-18 23:21:54 +03:00
< h2 > < a class = "header" href = "#api-details" id = "api-details" > API details< / a > < / h2 >
< blockquote >
< p > < strong > Under construction< / strong > : The API will keep changing. There are no backwards
compatibility guarantees yet. Please make sure I know about your project, so I
don't break your client code.< / p >
< / blockquote >
< p > For now, the API is JSON over HTTP. The exact format is unspecified, error codes
are missing, etc. A summary of the commands available so far:< / p >
< ul >
< li > < strong > /sim< / strong >
< ul >
< li > < strong > GET /sim/reset< / strong > : Reset all map edits and the simulation state. The trips
that will run don't change; they're determined by the scenario file you
initially pass to < code > headless< / code > .< / li >
2020-09-10 06:14:39 +03:00
< li > < strong > POST /sim/load< / strong > : Switch the scenario being simulated. Takes a
< a href = "https://dabreegster.github.io/abstreet/rustdoc/sim/struct.SimFlags.html" > SimFlags< / a >
as a JSON POST body.< / li >
2020-08-18 23:21:54 +03:00
< li > < strong > GET /sim/get-time< / strong > : Returns the current simulation time.< / li >
< li > < strong > GET /sim/goto-time?t=06:30:00< / strong > : Simulate until 6:30 AM. If the time you
specify is before the current time, you have to call < strong > /sim/reset< / strong > first.< / li >
2020-09-07 00:12:23 +03:00
< li > < strong > POST /sim/new-person< / strong > : The POST body must be an
< a href = "https://dabreegster.github.io/abstreet/rustdoc/sim/struct.ExternalPerson.html" > ExternalPerson< / a >
in JSON format.< / li >
2020-08-18 23:21:54 +03:00
< / ul >
< / li >
< li > < strong > /traffic-signals< / strong >
< ul >
< li > < strong > GET /traffic-signals/get?id=42< / strong > : Returns the traffic signal of
intersection #42 in JSON.< / li >
2020-09-07 00:12:23 +03:00
< li > < strong > POST /traffic-signals/set< / strong > : The POST body must be a
< a href = "https://dabreegster.github.io/abstreet/rustdoc/map_model/struct.ControlTrafficSignal.html" > ControlTrafficSignal< / a >
in JSON format.< / li >
2020-08-21 02:57:08 +03:00
< li > < strong > GET /traffic-signals/get-delays?id=42& t1=03:00:00& t2=03:30:00< / strong > : Returns
the delay experienced by every agent passing through intersection #42 from
3am to 3:30, grouped by direction of travel.< / li >
2020-08-22 19:24:23 +03:00
< li > < strong > GET /traffic-signals/get-cumulative-thruput?id=42< / strong > : Returns the number of
agents passing through intersection #42 since midnight, grouped by direction
of travel.< / li >
2020-08-18 23:21:54 +03:00
< / ul >
< / li >
< li > < strong > /data< / strong >
< ul >
< li > < strong > GET /data/get-finished-trips< / strong > : Returns a JSON list of all finished trips.
Each tuple is (time the trip finished in seconds after midnight, trip ID,
mode, duration of trip in seconds). The mode is either a string like " Walk"
or " Drive" , or null if the trip was aborted (due to a simulation bug or
disconnected map).< / li >
2020-08-26 19:43:44 +03:00
< li > < strong > GET /data/get-agent-positions< / strong > : Returns a JSON list of all active agents.
Vehicle type (or pedestrian), person ID, and position is included.< / li >
2020-08-18 23:21:54 +03:00
< / ul >
< / li >
2020-08-29 00:31:40 +03:00
< li > < strong > /map< / strong >
< ul >
< li > < strong > GET /map/get-edits< / strong > : Returns the current map edits in JSON. You can save
this to a file in < code > data/player/edits/map_name/< / code > and later use it in-game
normally. You can also later run the < code > headless< / code > server with
< code > --edits=name_of_edits< / code > .< / li >
< / ul >
< / li >
2020-08-18 23:21:54 +03:00
< / ul >
2020-09-04 21:18:02 +03:00
< h2 > < a class = "header" href = "#working-with-the-map-model" id = "working-with-the-map-model" > Working with the map model< / a > < / h2 >
2020-08-19 22:57:57 +03:00
< p > If you need to deeply inspect the map, you can dump it to JSON:< / p >
2020-09-04 21:18:02 +03:00
< pre > < code > cargo run --bin dump_map data/system/maps/montlake.bin > montlake.json
2020-08-19 22:57:57 +03:00
< / code > < / pre >
< p > The format of the map isn't well-documented yet. See the
< a href = "https://dabreegster.github.io/abstreet/rustdoc/map_model/index.html" > generated API docs< / a >
and < a href = "https://dabreegster.github.io/abstreet/map/index.html" > the map model docs< / a >
in the meantime.< / p >
2020-09-07 00:12:23 +03:00
< h2 > < a class = "header" href = "#working-with-individual-trips" id = "working-with-individual-trips" > Working with individual trips< / a > < / h2 >
< p > You can use the < strong > /sim/new-person< / strong > API in the middle of a simulation, if
needed. If possible, it's simpler to create a Scenario as input.< / p >
< h2 > < a class = "header" href = "#working-with-scenarios" id = "working-with-scenarios" > Working with Scenarios< / a > < / h2 >
< p > You can
2020-09-04 21:18:02 +03:00
< a href = "https://dabreegster.github.io/abstreet/trafficsim/travel_demand.html#custom-import" > import trips from your own data< / a > .< / p >
2020-09-04 21:29:38 +03:00
< p > You can also generate different variations of one of the
< a href = "https://dabreegster.github.io/abstreet/trafficsim/travel_demand.html#proletariat-robot" > demand models< / a >
by specifying an RNG seed:< / p >
< pre > < code > cargo run --bin random_scenario -- --rng=123 --map=data/system/maps/montlake.bin > data/system/scenarios/montlake/home_to_work.json
< / code > < / pre >
2020-09-04 21:18:02 +03:00
< p > You can also dump Scenarios (the file that defines all of the people and trips)
to JSON:< / p >
< pre > < code > cargo run --bin dump_scenario data/system/scenarios/montlake/weekday.bin > montlake_weekday.json
< / code > < / pre >
< p > You can modify the JSON, then put the file back in the appropriate directory and
use it in-game:< / p >
< pre > < code > cargo run --bin game data/system/scenarios/montlake/modified_scenario.json
< / code > < / pre >
< p > The Scenario format is also undocumented, but see the
< a href = "https://dabreegster.github.io/abstreet/rustdoc/sim/struct.Scenario.html" > generated API docs< / a >
anyway.< / p >
2020-08-18 23:21:54 +03:00
< / main >
< nav class = "nav-wrapper" aria-label = "Page navigation" >
<!-- Mobile navigation buttons -->
2020-08-26 22:53:16 +03:00
< a rel = "prev" href = "../dev/misc_tricks.html" class = "mobile-nav-chapters previous" title = "Previous chapter" aria-label = "Previous chapter" aria-keyshortcuts = "Left" >
2020-08-18 23:21:54 +03:00
< i class = "fa fa-angle-left" > < / i >
< / a >
2020-09-04 04:05:10 +03:00
< a rel = "next" href = "../dev/testing.html" class = "mobile-nav-chapters next" title = "Next chapter" aria-label = "Next chapter" aria-keyshortcuts = "Right" >
2020-08-18 23:21:54 +03:00
< i class = "fa fa-angle-right" > < / i >
< / a >
< div style = "clear: both" > < / div >
< / nav >
< / div >
< / div >
< nav class = "nav-wide-wrapper" aria-label = "Page navigation" >
2020-08-26 22:53:16 +03:00
< a rel = "prev" href = "../dev/misc_tricks.html" class = "nav-chapters previous" title = "Previous chapter" aria-label = "Previous chapter" aria-keyshortcuts = "Left" >
2020-08-18 23:21:54 +03:00
< i class = "fa fa-angle-left" > < / i >
< / a >
2020-09-04 04:05:10 +03:00
< a rel = "next" href = "../dev/testing.html" class = "nav-chapters next" title = "Next chapter" aria-label = "Next chapter" aria-keyshortcuts = "Right" >
2020-08-18 23:21:54 +03:00
< i class = "fa fa-angle-right" > < / i >
< / a >
< / nav >
< / div >
< script type = "text/javascript" >
window.playpen_copyable = true;
< / script >
2020-08-26 22:53:16 +03:00
< script src = "../elasticlunr.min.js" type = "text/javascript" charset = "utf-8" > < / script >
< script src = "../mark.min.js" type = "text/javascript" charset = "utf-8" > < / script >
< script src = "../searcher.js" type = "text/javascript" charset = "utf-8" > < / script >
2020-08-18 23:21:54 +03:00
2020-08-26 22:53:16 +03:00
< script src = "../clipboard.min.js" type = "text/javascript" charset = "utf-8" > < / script >
< script src = "../highlight.js" type = "text/javascript" charset = "utf-8" > < / script >
< script src = "../book.js" type = "text/javascript" charset = "utf-8" > < / script >
2020-08-18 23:21:54 +03:00
<!-- Custom JS scripts -->
< / body >
< / html >
