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src/main/java/org/matsim/prepare/traveltime/FetchRoutesTask.java
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| @@ -0,0 +1,138 @@ | ||
| package org.matsim.prepare.traveltime; | ||
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| import org.apache.commons.csv.CSVFormat; | ||
| import org.apache.commons.csv.CSVParser; | ||
| import org.apache.commons.csv.CSVPrinter; | ||
| import org.apache.commons.csv.CSVRecord; | ||
| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.matsim.api.core.v01.Id; | ||
| import org.matsim.api.core.v01.network.Node; | ||
| import org.matsim.prepare.traveltime.api.*; | ||
|
|
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| import java.nio.file.Files; | ||
| import java.nio.file.OpenOption; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.StandardOpenOption; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
|
|
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| /** | ||
| * Task to fetch routes from api service. | ||
| */ | ||
| final class FetchRoutesTask implements Runnable { | ||
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| private static final Logger log = LogManager.getLogger(FetchRoutesTask.class); | ||
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| private final RouteApi api; | ||
| private final String apiKey; | ||
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| private final List<SampleValidationRoutes.Route> routes; | ||
| private final List<Integer> hours; | ||
| private final Path out; | ||
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| FetchRoutesTask(RouteApi api, String apiKey, List<SampleValidationRoutes.Route> routes, List<Integer> hours, Path out) { | ||
| this.api = api; | ||
| this.apiKey = apiKey; | ||
| this.routes = routes; | ||
| this.hours = hours; | ||
| this.out = out; | ||
| } | ||
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| private void fetch() throws Exception { | ||
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| // Collect existing entries to support resuming | ||
| Set<Entry> entries = new HashSet<>(); | ||
| OpenOption open; | ||
| if (Files.exists(out)) { | ||
| open = StandardOpenOption.APPEND; | ||
| try (CSVParser csv = new CSVParser(Files.newBufferedReader(out), CSVFormat.DEFAULT.builder().setHeader().setSkipHeaderRecord(true).build())) { | ||
| for (CSVRecord r : csv) { | ||
| entries.add(new Entry( | ||
| Id.createNodeId(r.get("from_node")), | ||
| Id.createNodeId(r.get("to_node")), | ||
| r.get("api"), | ||
| Integer.parseInt(r.get("hour"))) | ||
| ); | ||
| } | ||
| } | ||
|
|
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| } else | ||
| open = StandardOpenOption.CREATE_NEW; | ||
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| try (RouteValidator val = switch (api) { | ||
| case google -> new GoogleRouteValidator(apiKey); | ||
| case woosmap -> new WoosMapRouteValidator(apiKey); | ||
| case mapbox -> new MapboxRouteValidator(apiKey); | ||
| case here -> new HereRouteValidator(apiKey); | ||
| case tomtom -> new TomTomRouteValidator(apiKey); | ||
| }) { | ||
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| try (CSVPrinter csv = new CSVPrinter(Files.newBufferedWriter(out, open), CSVFormat.DEFAULT)) { | ||
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| if (open == StandardOpenOption.CREATE_NEW) { | ||
| csv.printRecord("from_node", "to_node", "api", "hour", "dist", "travel_time"); | ||
| csv.flush(); | ||
| } | ||
|
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| int i = 0; | ||
| for (SampleValidationRoutes.Route route : routes) { | ||
| for (int h : hours) { | ||
|
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| // Skip entries already present | ||
| Entry e = new Entry(route.fromNode(), route.toNode(), val.name(), h); | ||
| if (entries.contains(e)) | ||
| continue; | ||
|
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| try { | ||
| RouteValidator.Result res = fetchWithBackoff(val, route, h, 0); | ||
| csv.printRecord(route.fromNode(), route.toNode(), val.name(), h, res.dist(), res.travelTime()); | ||
| } catch (Exception ex) { | ||
| log.warn("Could not retrieve result for route {} {}", api, route, ex); | ||
| } | ||
| } | ||
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| csv.flush(); | ||
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| if (i++ % 50 == 0) { | ||
| log.info("{}: processed {} routes", api, i - 1); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| /** | ||
| * Fetch route with increasing delay. | ||
| */ | ||
| private RouteValidator.Result fetchWithBackoff(RouteValidator val, SampleValidationRoutes.Route route, int h, int i) throws InterruptedException { | ||
| try { | ||
| return val.retrieve(route.from(), route.to(), h); | ||
| } catch (Exception e) { | ||
| if (i < 3) { | ||
| long backoff = (long) (10000d * Math.pow(2, i)); | ||
| log.warn("Failed to fetch result for {} {}: {}, (retrying after {}s)", api, route, e.getMessage(), backoff / 1000); | ||
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| Thread.sleep(backoff); | ||
| return fetchWithBackoff(val, route, h, ++i); | ||
| } | ||
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| throw e; | ||
| } | ||
| } | ||
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| @Override | ||
| public void run() { | ||
| try { | ||
| fetch(); | ||
| } catch (Exception e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
|
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| record Entry(Id<Node> fromNode, Id<Node> toNode, String api, int hour) { | ||
| } | ||
|
|
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| package org.matsim.prepare.traveltime; | ||
|
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| /** | ||
| * Defines different available API services. | ||
| */ | ||
| public enum RouteApi { | ||
| google, | ||
| woosmap, | ||
| mapbox, | ||
| here, | ||
| tomtom | ||
| } |
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