package org.opensha2.programs;
import static java.lang.Runtime.getRuntime;
import static java.nio.file.StandardOpenOption.APPEND;
import static java.util.concurrent.Executors.newFixedThreadPool;
import static org.opensha2.util.TextUtils.NEWLINE;
import java.io.IOException;
import java.nio.file.OpenOption;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.logging.Logger;
import org.opensha2.calc.CalcConfig;
import org.opensha2.calc.Calcs;
import org.opensha2.calc.Hazard;
import org.opensha2.calc.Results;
import org.opensha2.calc.Site;
import org.opensha2.calc.Sites;
import org.opensha2.eq.model.HazardModel;
import org.opensha2.util.Logging;
import com.google.common.base.Optional;
import com.google.common.base.StandardSystemProperty;
import com.google.common.base.Stopwatch;
import com.google.common.base.Throwables;
/**
* Compute probabilisitic seismic hazard at a {@link Site} from a
* {@link HazardModel}.
*
* @author Peter Powers
*/
public class HazardCalc {
/**
* Entry point for a hazard calculation.
*
* <p>Computing hazard curves requires at least 2, and at most 3, arguments.
* At a minimum, the path to a model zip file or directory and the site(s)
* at which to perform calculations must be specified. Under the 2-argument
* scenario, model initialization and calculation configuration settings are
* drawn from the config file that <i>must</i> reside at the root of the
* model directory. Sites may be defined as a string, a CSV file, or a
* GeoJSON file.
*
* <p>To override any default or calculation configuration settings included
* with the model, supply the path to another configuration file as a third
* argument.
*
* <p>Please refer to the nshmp-haz <a
* href="https://github.com/usgs/nshmp-haz/wiki">wiki</a> for comprehensive
* descriptions of source models, configuration files, site files, and
* hazard calculations.</p>
*
* @see <a href="https://github.com/usgs/nshmp-haz/wiki/Building-&-Running">
* nshmp-haz wiki</a>
* @see <a
* href="https://github.com/usgs/nshmp-haz/tree/master/etc/examples">
* example calculations</a>
*/
public static void main(String[] args) {
/* Delegate to run which has a return value for testing. */
Optional<String> status = run(args);
if (status.isPresent()) {
System.err.print(status.get());
System.exit(1);
}
System.exit(0);
}
static Optional<String> run(String[] args) {
int argCount = args.length;
if (argCount < 2 || argCount > 3) {
return Optional.of(USAGE);
}
Logging.init();
Logger log = Logger.getLogger(HazardCalc.class.getName());
try {
log.info(PROGRAM + ": initializing...");
Path modelPath = Paths.get(args[0]);
HazardModel model = HazardModel.load(modelPath);
CalcConfig config = model.config();
if (argCount == 3) {
Path userConfigPath = Paths.get(args[2]);
config = CalcConfig.Builder.copyOf(model.config())
.extend(CalcConfig.Builder.fromFile(userConfigPath))
.build();
}
log.info(config.toString());
Iterable<Site> sites = readSites(args[1]);
log.info("");
log.info("Sites: " + sites);
calc(model, config, sites, log);
log.info(PROGRAM + ": finished");
return Optional.absent();
} catch (Exception e) {
StringBuilder sb = new StringBuilder()
.append(NEWLINE)
.append(PROGRAM + ": error").append(NEWLINE)
.append(" Arguments: ").append(Arrays.toString(args)).append(NEWLINE)
.append(NEWLINE)
.append(Throwables.getStackTraceAsString(e))
.append(USAGE);
return Optional.of(sb.toString());
}
}
static Iterable<Site> readSites(String arg) {
try {
if (arg.toLowerCase().endsWith(".csv")) {
return Sites.fromCsv(Paths.get(arg));
}
if (arg.toLowerCase().endsWith(".geojson")) {
return Sites.fromJson(Paths.get(arg));
}
return Sites.fromString(arg);
} catch (Exception e) {
throw new IllegalArgumentException(
"'sites' [" + arg + "] must either be a 3 to 7 argument, comma-delimited string " +
"or specify a path to a *.csv or *.geojson file", e);
}
}
private static final OpenOption[] WRITE_OPTIONS = new OpenOption[] {};
private static final OpenOption[] APPEND_OPTIONS = new OpenOption[] { APPEND };
/*
* Compute hazard curves using the supplied model, config, and sites.
*/
private static void calc(
HazardModel model,
CalcConfig config,
Iterable<Site> sites,
Logger log) throws IOException {
ExecutorService execSvc = createExecutor();
int threadCount = ((ThreadPoolExecutor) execSvc).getCorePoolSize();
log.info("Threads: " + threadCount);
Optional<Executor> executor = Optional.<Executor> of(execSvc);
log.info(PROGRAM + ": calculating ...");
Stopwatch batchWatch = Stopwatch.createStarted();
Stopwatch totalWatch = Stopwatch.createStarted();
int count = 0;
List<Hazard> results = new ArrayList<>();
boolean firstBatch = true;
for (Site site : sites) {
Hazard result = calc(model, config, site, executor);
results.add(result);
if (results.size() == config.output.flushLimit) {
OpenOption[] opts = firstBatch ? WRITE_OPTIONS : APPEND_OPTIONS;
firstBatch = false;
Results.writeResults(config.output.directory, results, opts);
log.info(" batch: " + (count + 1) + " " + batchWatch +
" total: " + totalWatch);
results.clear();
batchWatch.reset().start();
}
count++;
}
// write final batch
if (!results.isEmpty()) {
OpenOption[] opts = firstBatch ? WRITE_OPTIONS : APPEND_OPTIONS;
Results.writeResults(config.output.directory, results, opts);
}
log.info(PROGRAM + ": " + count + " complete " + totalWatch);
execSvc.shutdown();
}
/**
* Compute hazard curves at a {@code site} for a {@code model} and
* {@code config}. If an {@code executor} is supplied, it will be used to
* distribute tasks; otherwise, one will be created.
*
* <p><b>Note:</b> any model initialization settings in {@code config} will
* be ignored as the supplied model will already have been initialized.</p>
*
* @param model to use
* @param config calculation configuration
* @param site of interest
* @param executor to use ({@link Optional})
* @return a HazardResult
*/
public static Hazard calc(
HazardModel model,
CalcConfig config,
Site site,
Optional<Executor> executor) {
// TODO not sure why we're mandating an executor here.
// legacy from refactoring?
Optional<Executor> execLocal = executor.or(Optional.of(createExecutor()));
try {
Hazard result = Calcs.hazard(model, config, site, execLocal);
// Shut down the locally created executor if none was supplied
if (!executor.isPresent()) {
((ExecutorService) execLocal.get()).shutdown();
}
return result;
} catch (ExecutionException | InterruptedException e) {
Throwables.propagate(e);
return null;
}
}
private static ExecutorService createExecutor() {
return newFixedThreadPool(getRuntime().availableProcessors());
}
private static final String PROGRAM = HazardCalc.class.getSimpleName();
private static final String USAGE_COMMAND =
"java -cp nshmp-haz.jar org.opensha2.programs.HazardCalc model sites [config]";
private static final String USAGE_URL1 = "https://github.com/usgs/nshmp-haz/wiki";
private static final String USAGE_URL2 = "https://github.com/usgs/nshmp-haz/tree/master/etc";
private static final String SITE_STRING = "name,lon,lat[,vs30,vsInf[,z1p0,z2p5]]";
private static final String USAGE = new StringBuilder()
.append(NEWLINE)
.append(PROGRAM).append(" usage:").append(NEWLINE)
.append(" ").append(USAGE_COMMAND).append(NEWLINE)
.append(NEWLINE)
.append("Where:").append(NEWLINE)
.append(" 'model' is a model zip file or directory")
.append(NEWLINE)
.append(" 'sites' is either:")
.append(NEWLINE)
.append(" - a string, e.g. ").append(SITE_STRING)
.append(NEWLINE)
.append(" (site class and basin terms are optional)")
.append(NEWLINE)
.append(" (escape any spaces or enclose string in double-quotes)")
.append(NEWLINE)
.append(" - or a *.csv file or *.geojson file of site data")
.append(NEWLINE)
.append(" 'config' (optional) supplies a calculation configuration")
.append(NEWLINE)
.append(NEWLINE)
.append("For more information, see:").append(NEWLINE)
.append(" ").append(USAGE_URL1).append(NEWLINE)
.append(" ").append(USAGE_URL2).append(NEWLINE)
.append(NEWLINE)
.toString();
}