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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.feed.client;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLSession;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.nio.file.Files;
import java.time.Duration;
import java.util.Map;
import java.util.Optional;
import java.util.Properties;
import java.util.concurrent.atomic.AtomicInteger;
/**
* Main method for CLI interface
*
* @author bjorncs
*/
public class CliClient {
private final PrintStream systemOut;
private final PrintStream systemError;
private final InputStream systemIn;
private final Properties systemProperties;
private final Map<String, String> environmentVariables;
private CliClient(PrintStream systemOut, PrintStream systemError, InputStream systemIn,
Properties systemProperties, Map<String, String> environmentVariables) {
this.systemOut = systemOut;
this.systemError = systemError;
this.systemIn = systemIn;
this.systemProperties = systemProperties;
this.environmentVariables = environmentVariables;
}
public static void main(String[] args) {
CliClient client = new CliClient(System.out, System.err, System.in, System.getProperties(), System.getenv());
int exitCode = client.run(args);
System.exit(exitCode);
}
private int run(String[] rawArgs) {
CliArguments cliArgs = null;
try {
cliArgs = CliArguments.fromRawArgs(rawArgs);
if (cliArgs.helpSpecified()) {
cliArgs.printHelp(systemOut);
return 0;
}
if (cliArgs.versionSpecified()) {
systemOut.println(Vespa.VERSION);
return 0;
}
try (InputStream in = createFeedInputStream(cliArgs);
FeedClient feedClient = createFeedClient(cliArgs);
JsonFeeder feeder = createJsonFeeder(feedClient, cliArgs)) {
long startNanos = System.nanoTime();
feeder.feedMany(in).join();
if (cliArgs.benchmarkModeEnabled()) {
printBenchmarkResult(System.nanoTime() - startNanos, feedClient.stats(), systemOut);
}
}
return 0;
} catch (CliArguments.CliArgumentsException | IOException e) {
boolean verbose = cliArgs != null && cliArgs.verboseSpecified();
return handleException(verbose, e);
} catch (Exception e) {
boolean verbose = cliArgs != null && cliArgs.verboseSpecified();
return handleException(verbose, "Unknown failure: " + e.getMessage(), e);
}
}
private static FeedClient createFeedClient(CliArguments cliArgs) throws CliArguments.CliArgumentsException {
FeedClientBuilder builder = FeedClientBuilder.create(cliArgs.endpoint());
cliArgs.connections().ifPresent(builder::setConnectionsPerEndpoint);
cliArgs.maxStreamsPerConnection().ifPresent(builder::setMaxStreamPerConnection);
if (cliArgs.sslHostnameVerificationDisabled()) {
builder.setHostnameVerifier(AcceptAllHostnameVerifier.INSTANCE);
}
cliArgs.certificateAndKey().ifPresent(c -> builder.setCertificate(c.certificateFile, c.privateKeyFile));
cliArgs.caCertificates().ifPresent(builder::setCaCertificates);
cliArgs.headers().forEach(builder::addRequestHeader);
return builder.build();
}
private static JsonFeeder createJsonFeeder(FeedClient feedClient, CliArguments cliArgs) throws CliArguments.CliArgumentsException, IOException {
JsonFeeder.Builder builder = JsonFeeder.builder(feedClient);
cliArgs.timeout().ifPresent(builder::withTimeout);
cliArgs.route().ifPresent(builder::withRoute);
cliArgs.traceLevel().ifPresent(builder::withTracelevel);
return builder.build();
}
private InputStream createFeedInputStream(CliArguments cliArgs) throws CliArguments.CliArgumentsException, IOException {
return cliArgs.readFeedFromStandardInput() ? systemIn : Files.newInputStream(cliArgs.inputFile().get());
}
private int handleException(boolean verbose, Exception e) { return handleException(verbose, e.getMessage(), e); }
private int handleException(boolean verbose, String message, Exception exception) {
systemError.println(message);
if (debugMode() || verbose) {
exception.printStackTrace(systemError);
}
return 1;
}
private boolean debugMode() {
boolean enabledWithSystemProperty = Boolean.parseBoolean(systemProperties.getProperty("VESPA_DEBUG", Boolean.FALSE.toString()));
boolean enabledWithEnvironmentVariable = Optional.ofNullable(environmentVariables.get("VESPA_DEBUG"))
.map(Boolean::parseBoolean).orElse(false);
return enabledWithSystemProperty || enabledWithEnvironmentVariable;
}
private static class AcceptAllHostnameVerifier implements HostnameVerifier {
static final AcceptAllHostnameVerifier INSTANCE = new AcceptAllHostnameVerifier();
@Override public boolean verify(String hostname, SSLSession session) { return true; }
}
static void printBenchmarkResult(long durationNanos, OperationStats stats, OutputStream systemOut) throws IOException {
JsonFactory factory = new JsonFactory();
long okCount = stats.successes();
long errorCount = stats.requests() - okCount;
double throughput = okCount * 1e9 / Math.max(1, durationNanos);
try (JsonGenerator generator = factory.createGenerator(systemOut).useDefaultPrettyPrinter()) {
generator.writeStartObject();
generator.writeNumberField("feeder.runtime", durationNanos / 1_000_000);
generator.writeNumberField("feeder.okcount", okCount);
generator.writeNumberField("feeder.errorcount", errorCount);
generator.writeNumberField("feeder.throughput", throughput);
generator.writeNumberField("feeder.minlatency", stats.minLatencyMillis());
generator.writeNumberField("feeder.avglatency", stats.averageLatencyMillis());
generator.writeNumberField("feeder.maxlatency", stats.maxLatencyMillis());
generator.writeNumberField("feeder.bytessent", stats.bytesSent());
generator.writeNumberField("feeder.bytesreceived", stats.bytesReceived());
generator.writeObjectFieldStart("feeder.responsecodes");
for (Map.Entry<Integer, Long> entry : stats.responsesByCode().entrySet())
generator.writeNumberField(Integer.toString(entry.getKey()), entry.getValue());
generator.writeEndObject();
generator.writeEndObject();
}
}
}
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