blob: 3234c11f5001de1acf4238e826bdedbc8dc65dcd [file] [log] [blame]
/*
* Copyright 2019-present Open Networking Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.opencord.fabric.tofino;
import org.onosproject.core.CoreService;
import org.onosproject.net.pi.model.DefaultPiPipeconf;
import org.onosproject.net.pi.model.PiPipeconf;
import org.onosproject.net.pi.model.PiPipeconf.ExtensionType;
import org.onosproject.net.pi.model.PiPipeconfId;
import org.onosproject.net.pi.service.PiPipeconfService;
import org.onosproject.pipelines.fabric.FabricPipeconfService;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.wiring.BundleWiring;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferenceCardinality;
import org.slf4j.Logger;
import java.io.File;
import java.io.FileNotFoundException;
import java.net.URL;
import java.util.Collection;
import java.util.Objects;
import java.util.stream.Collectors;
import static java.lang.String.format;
import static org.osgi.framework.wiring.BundleWiring.LISTRESOURCES_RECURSE;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Component responsible for registering Tofino-specific versions
* of the fabric pipeconf at app activation.
*/
@Component(immediate = true)
public class PipeconfLoader {
private static final String APP_NAME = "org.opencord.fabric-tofino";
private static Logger log = getLogger(PipeconfLoader.class);
private static final String BASE_PIPECONF_ID = "org.opencord";
private static final String P4C_OUT_PATH = "/p4c-out";
// p4c-out/<profile>/<platform>
private static final String P4C_RES_BASE_PATH = P4C_OUT_PATH + "/%s/%s/%s/";
private static final String SEP = File.separator;
@Reference(cardinality = ReferenceCardinality.MANDATORY)
private PiPipeconfService pipeconfService;
@Reference(cardinality = ReferenceCardinality.MANDATORY)
private FabricPipeconfService fabricPipeconfService;
@Reference(cardinality = ReferenceCardinality.MANDATORY)
private CoreService coreService;
private Collection<PiPipeconf> pipeconfs;
private static final String TOFINO = "tofino";
private static final String P4INFO_TXT = "p4info.txt";
private static final String CPU_PORT_TXT = "cpu_port.txt";
private static final String TOFINO_BIN = "pipe/tofino.bin";
private static final String TOFINO_CTX_JSON = "pipe/context.json";
@Activate
public void activate() {
coreService.registerApplication(APP_NAME);
// Registers all pipeconf at component activation.
pipeconfs = buildAllPipeconfs();
pipeconfs.forEach(pipeconfService::register);
log.info("Started");
}
@Deactivate
public void deactivate() {
pipeconfs.stream()
.map(PiPipeconf::id)
.forEach(pipeconfService::unregister);
pipeconfs = null;
log.info("Stopped");
}
private Collection<PiPipeconf> buildAllPipeconfs() {
return FrameworkUtil
.getBundle(this.getClass())
.adapt(BundleWiring.class)
// List all resource files in /p4c-out
.listResources(P4C_OUT_PATH, "*", LISTRESOURCES_RECURSE)
.stream()
// Filter only directories
.filter(name -> name.endsWith(SEP))
// Derive profile, target, and platform and build pipeconf.
.map(this::buildPipeconfFromPath)
.filter(Objects::nonNull)
.collect(Collectors.toList());
}
private PiPipeconf buildPipeconfFromPath(String path) {
String[] pieces = path.split(SEP);
// We expect a path of 4 elements, e.g.
// p4c-out/<profile>/<target>/<platform>
if (pieces.length != 4) {
return null;
}
String profile = pieces[1];
String target = pieces[2];
String platform = pieces[3];
if (TOFINO.equals(target)) {
try {
return tofinoPipeconf(profile, platform);
} catch (FileNotFoundException e) {
log.warn("Unable to build pipeconf at {} because file is missing: {}",
path, e.getMessage());
return null;
}
}
log.warn("Unknown target '{}', skipping pipeconf build at '{}'...",
target, path);
return null;
}
private PiPipeconf tofinoPipeconf(String profile, String platform)
throws FileNotFoundException {
final URL tofinoBinUrl = this.getClass().getResource(format(
P4C_RES_BASE_PATH + TOFINO_BIN, profile, TOFINO, platform));
final URL contextJsonUrl = this.getClass().getResource(format(
P4C_RES_BASE_PATH + TOFINO_CTX_JSON, profile, TOFINO, platform));
final URL p4InfoUrl = this.getClass().getResource(format(
P4C_RES_BASE_PATH + P4INFO_TXT, profile, TOFINO, platform));
final URL cpuPortUrl = this.getClass().getResource(format(
P4C_RES_BASE_PATH + CPU_PORT_TXT, profile, TOFINO, platform));
checkFileExists(tofinoBinUrl, TOFINO_BIN);
checkFileExists(contextJsonUrl, TOFINO_CTX_JSON);
checkFileExists(p4InfoUrl, P4INFO_TXT);
checkFileExists(cpuPortUrl, CPU_PORT_TXT);
final DefaultPiPipeconf.Builder builder = DefaultPiPipeconf.builder()
.withId(new PiPipeconfId(format(
"%s.%s.tofino.%s", BASE_PIPECONF_ID, profile, platform)))
.addExtension(ExtensionType.TOFINO_BIN, tofinoBinUrl)
.addExtension(ExtensionType.TOFINO_CONTEXT_JSON, contextJsonUrl);
return fabricPipeconfService.buildFabricPipeconf(
builder, profile, p4InfoUrl, cpuPortUrl);
}
private void checkFileExists(URL url, String name)
throws FileNotFoundException {
if (url == null) {
throw new FileNotFoundException(name);
}
}
}