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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.http.v2;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ApplicationName;
import com.yahoo.config.provision.HostFilter;
import com.yahoo.config.provision.TenantName;
import com.yahoo.config.provision.Zone;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.logging.AccessLog;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.application.BindingMatch;
import com.yahoo.vespa.config.server.http.HttpConfigResponse;
import com.yahoo.vespa.config.server.tenant.Tenant;
import com.yahoo.vespa.config.server.TimeoutBudget;
import com.yahoo.vespa.config.server.ApplicationRepository;
import com.yahoo.vespa.config.server.http.HttpErrorResponse;
import com.yahoo.vespa.config.server.http.HttpHandler;
import com.yahoo.vespa.config.server.http.JSONResponse;
import com.yahoo.vespa.config.server.http.NotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.time.Clock;
import java.time.Duration;
import java.util.concurrent.Executor;
/**
* Operations on applications (delete, wait for config convergence, restart, application content etc.)
*
* @author hmusum
* @since 5.4
*/
// TODO: Move business logic out of the http layer
public class ApplicationHandler extends HttpHandler {
private static final String REQUEST_PROPERTY_TIMEOUT = "timeout";
private final Zone zone;
private final ApplicationRepository applicationRepository;
public ApplicationHandler(Executor executor,
AccessLog accessLog,
Zone zone,
ApplicationRepository applicationRepository) {
super(executor, accessLog);
this.zone = zone;
this.applicationRepository = applicationRepository;
}
@Override
public HttpResponse handleDELETE(HttpRequest request) {
ApplicationId applicationId = getApplicationIdFromRequest(request);
boolean removed = applicationRepository.remove(applicationId);
if ( ! removed)
return HttpErrorResponse.notFoundError("Unable to delete " + applicationId + ": Not found");
return new DeleteApplicationResponse(Response.Status.OK, applicationId);
}
@Override
public HttpResponse handleGET(HttpRequest request) {
ApplicationId applicationId = getApplicationIdFromRequest(request);
Tenant tenant = verifyTenantAndApplication(applicationId);
if (isServiceConvergeRequest(request)) {
return applicationRepository.nodeConvergenceCheck(tenant, applicationId, getHostFromRequest(request), request.getUri());
}
if (isContentRequest(request)) {
return applicationRepository.getContent(tenant, applicationId, zone, request);
}
// TODO: Remove this once the config convergence logic is moved to client and is live for all clusters.
if (isConvergeRequest(request)) {
try {
applicationRepository.waitForConfigConverged(tenant, applicationId, new TimeoutBudget(Clock.systemUTC(), durationFromRequestTimeout(request)));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
if (isServiceConvergeListRequest(request)) {
return applicationRepository.listConfigConvergence(tenant, applicationId, request.getUri());
}
return new GetApplicationResponse(Response.Status.OK, applicationRepository.getApplicationGeneration(tenant, applicationId));
}
@Override
public HttpResponse handlePOST(HttpRequest request) {
ApplicationId applicationId = getApplicationIdFromRequest(request);
Tenant tenant = verifyTenantAndApplication(applicationId);
if (request.getUri().getPath().endsWith("restart"))
return restart(request, applicationId);
if (request.getUri().getPath().endsWith("log"))
return grabLog(request, applicationId, tenant);
throw new NotFoundException("Illegal POST request '" + request.getUri() + "': Must end by /restart or /log");
}
private HttpResponse restart(HttpRequest request, ApplicationId applicationId) {
if (getBindingMatch(request).groupCount() != 7)
throw new NotFoundException("Illegal POST restart request '" + request.getUri() +
"': Must have 6 arguments but had " + ( getBindingMatch(request).groupCount()-1 ) );
applicationRepository.restart(applicationId, hostFilterFrom(request));
return new JSONResponse(Response.Status.OK); // return empty
}
private HttpResponse grabLog(HttpRequest request, ApplicationId applicationId, Tenant tenant) {
if (getBindingMatch(request).groupCount() != 7)
throw new NotFoundException("Illegal POST log request '" + request.getUri() +
"': Must have 6 arguments but had " + ( getBindingMatch(request).groupCount()-1 ) );
final String response = applicationRepository.grabLog(tenant, applicationId);
return new HttpResponse(200) {
@Override
public void render(OutputStream outputStream) throws IOException {
outputStream.write(response.getBytes(StandardCharsets.UTF_8));
}
@Override
public String getContentType() {
return HttpConfigResponse.JSON_CONTENT_TYPE;
}
};
}
private HostFilter hostFilterFrom(HttpRequest request) {
return HostFilter.from(request.getProperty("hostname"),
request.getProperty("flavor"),
request.getProperty("clusterType"),
request.getProperty("clusterId"));
}
private Tenant verifyTenantAndApplication(ApplicationId applicationId) {
try {
return applicationRepository.verifyTenantAndApplication(applicationId);
} catch (IllegalArgumentException e) {
throw new NotFoundException(e.getMessage());
}
}
private Duration durationFromRequestTimeout(HttpRequest request) {
long timeoutInSeconds = 60;
if (request.hasProperty(REQUEST_PROPERTY_TIMEOUT)) {
timeoutInSeconds = Long.parseLong(request.getProperty(REQUEST_PROPERTY_TIMEOUT));
}
return Duration.ofSeconds(timeoutInSeconds);
}
// Note: Update src/main/resources/configserver-app/services.xml if you do any changes to the bindings
private static BindingMatch<?> getBindingMatch(HttpRequest request) {
return HttpConfigRequests.getBindingMatch(request,
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*/content/*",
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*/log",
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*/restart",
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*/converge",
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*/serviceconverge",
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*/serviceconverge/*",
"http://*/application/v2/tenant/*/application/*/environment/*/region/*/instance/*",
"http://*/application/v2/tenant/*/application/*");
}
private static boolean isConvergeRequest(HttpRequest request) {
return getBindingMatch(request).groupCount() == 7 &&
request.getUri().getPath().endsWith("/converge");
}
private static boolean isServiceConvergeListRequest(HttpRequest request) {
return getBindingMatch(request).groupCount() == 7 &&
request.getUri().getPath().endsWith("/serviceconverge");
}
private static boolean isServiceConvergeRequest(HttpRequest request) {
return getBindingMatch(request).groupCount() == 8 &&
request.getUri().getPath().contains("/serviceconverge/");
}
private static boolean isContentRequest(HttpRequest request) {
return getBindingMatch(request).groupCount() > 7;
}
private static String getHostFromRequest(HttpRequest req) {
BindingMatch<?> bm = getBindingMatch(req);
return bm.group(7);
}
private static ApplicationId getApplicationIdFromRequest(HttpRequest req) {
// Two bindings for this: with full app id or only application name
BindingMatch<?> bm = getBindingMatch(req);
if (bm.groupCount() > 4) return createFromRequestFullAppId(bm);
return createFromRequestSimpleAppId(bm);
}
// The URL pattern with only tenant and application given
private static ApplicationId createFromRequestSimpleAppId(BindingMatch<?> bm) {
TenantName tenant = TenantName.from(bm.group(2));
ApplicationName application = ApplicationName.from(bm.group(3));
return new ApplicationId.Builder().tenant(tenant).applicationName(application).build();
}
// The URL pattern with full app id given
private static ApplicationId createFromRequestFullAppId(BindingMatch<?> bm) {
String tenant = bm.group(2);
String application = bm.group(3);
String instance = bm.group(6);
return new ApplicationId.Builder()
.tenant(tenant)
.applicationName(application).instanceName(instance)
.build();
}
private static class DeleteApplicationResponse extends JSONResponse {
public DeleteApplicationResponse(int status, ApplicationId applicationId) {
super(status);
object.setString("message", "Application '" + applicationId + "' deleted");
}
}
private static class GetApplicationResponse extends JSONResponse {
public GetApplicationResponse(int status, long generation) {
super(status);
object.setLong("generation", generation);
}
}
}
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