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// Copyright 2015-2019 SWIM.AI inc.
//
// 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 swim.fabric;
import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
import swim.api.agent.AgentDef;
import swim.api.auth.Authenticator;
import swim.api.auth.AuthenticatorDef;
import swim.api.plane.PlaneDef;
import swim.api.plane.PlaneException;
import swim.api.plane.PlaneFactory;
import swim.api.space.Space;
import swim.api.space.SpaceDef;
import swim.collections.FingerTrieSeq;
import swim.collections.HashTrieMap;
import swim.concurrent.StageDef;
import swim.kernel.KernelContext;
import swim.kernel.KernelProxy;
import swim.runtime.HostDef;
import swim.runtime.LaneDef;
import swim.runtime.LogDef;
import swim.runtime.MeshDef;
import swim.runtime.NodeDef;
import swim.runtime.PartDef;
import swim.runtime.PartPredicate;
import swim.runtime.PolicyDef;
import swim.store.StoreDef;
import swim.structure.Item;
import swim.structure.Value;
import swim.uri.Uri;
import swim.uri.UriMapper;
import swim.uri.UriPattern;
public class FabricKernel extends KernelProxy {
final double kernelPriority;
volatile HashTrieMap fabrics;
public FabricKernel(double kernelPriority) {
this.kernelPriority = kernelPriority;
this.fabrics = HashTrieMap.empty();
}
public FabricKernel() {
this(KERNEL_PRIORITY);
}
@Override
public final double kernelPriority() {
return this.kernelPriority;
}
@Override
public SpaceDef defineSpace(Item spaceConfig) {
final SpaceDef fabricDef = defineFabricSpace(spaceConfig);
return fabricDef != null ? fabricDef : super.defineSpace(spaceConfig);
}
public FabricDef defineFabricSpace(Item spaceConfig) {
final Value value = spaceConfig.toValue();
final Value header = value.getAttr("fabric");
if (header.isDefined()) {
final String fabricProvider = header.get("provider").stringValue(null);
if (fabricProvider == null || FabricKernel.class.getName().equals(fabricProvider)) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
final String spaceName = spaceConfig.key().stringValue(null);
FingerTrieSeq planeDefs = FingerTrieSeq.empty();
HashTrieMap authenticatorDefs = HashTrieMap.empty();
HashTrieMap meshDefs = HashTrieMap.empty();
HashTrieMap partDefs = HashTrieMap.empty();
UriMapper hostDefs = UriMapper.empty();
UriMapper nodeDefs = UriMapper.empty();
UriMapper laneDefs = UriMapper.empty();
LogDef logDef = null;
PolicyDef policyDef = null;
StageDef stageDef = null;
StoreDef storeDef = null;
for (int i = 0, n = value.length(); i < n; i += 1) {
final Item item = value.getItem(i);
final PlaneDef planeDef = kernel.definePlane(item);
if (planeDef != null) {
planeDefs = planeDefs.appended(planeDef);
continue;
}
final AuthenticatorDef authenticatorDef = kernel.defineAuthenticator(item);
if (authenticatorDef != null) {
authenticatorDefs = authenticatorDefs.updated(authenticatorDef.authenticatorName(), authenticatorDef);
continue;
}
final MeshDef meshDef = kernel.defineMesh(item);
if (meshDef != null) {
meshDefs = meshDefs.updated(meshDef.meshUri(), meshDef);
continue;
}
final PartDef partDef = kernel.definePart(item);
if (partDef != null) {
partDefs = partDefs.updated(partDef.partKey(), partDef);
continue;
}
final HostDef hostDef = kernel.defineHost(item);
if (hostDef != null) {
hostDefs = hostDefs.updated(hostDef.hostPattern(), hostDef);
continue;
}
final NodeDef nodeDef = kernel.defineNode(item);
if (nodeDef != null) {
nodeDefs = nodeDefs.updated(nodeDef.nodePattern(), nodeDef);
continue;
}
final LaneDef laneDef = kernel.defineLane(item);
if (laneDef != null) {
laneDefs = laneDefs.updated(laneDef.lanePattern(), laneDef);
continue;
}
final LogDef newLogDef = kernel.defineLog(item);
if (newLogDef != null) {
logDef = newLogDef;
continue;
}
final PolicyDef newPolicyDef = kernel.definePolicy(item);
if (newPolicyDef != null) {
policyDef = newPolicyDef;
continue;
}
final StageDef newStageDef = kernel.defineStage(item);
if (newStageDef != null) {
stageDef = newStageDef;
continue;
}
final StoreDef newStoreDef = kernel.defineStore(item);
if (newStoreDef != null) {
storeDef = newStoreDef;
continue;
}
}
return new FabricDef(spaceName, planeDefs, authenticatorDefs, meshDefs,
partDefs, hostDefs, nodeDefs, laneDefs,
logDef, policyDef, stageDef, storeDef);
}
}
return null;
}
@Override
public Space openSpace(SpaceDef spaceDef) {
if (spaceDef instanceof FabricDef) {
return openFabric((FabricDef) spaceDef);
} else {
return super.openSpace(spaceDef);
}
}
public Fabric openFabric(FabricDef fabricDef) {
final String spaceName = fabricDef.spaceName;
Fabric fabric = null;
do {
final HashTrieMap oldFabrics = this.fabrics;
final Fabric oldFabric = oldFabrics.get(spaceName);
if (oldFabric == null) {
if (fabric == null) {
fabric = createFabric(spaceName, fabricDef);
}
final HashTrieMap newFabrics = oldFabrics.updated(spaceName, fabric);
if (FABRICS.compareAndSet(this, oldFabrics, newFabrics)) {
if (isStarted()) {
fabric.start();
}
break;
}
} else {
fabric = oldFabric;
break;
}
} while (true);
return fabric;
}
protected Fabric createFabric(String spaceName, FabricDef spaceDef) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
final Fabric fabric = new Fabric(spaceName, spaceDef, kernel);
createAuthenticators(fabric, spaceDef);
createPlanes(fabric, spaceDef);
return fabric;
}
protected void createAuthenticators(Fabric fabric, FabricDef spaceDef) {
for (AuthenticatorDef authenticatorDef : spaceDef.authenticatorDefs()) {
if (fabric.getAuthenticator(authenticatorDef.authenticatorName()) == null) {
createAuthenticator(fabric, authenticatorDef);
}
}
}
protected void createAuthenticator(Fabric fabric, AuthenticatorDef authenticatorDef) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
Authenticator authenticator = kernel.createAuthenticator(authenticatorDef, null);
if (authenticator != null) {
authenticator = kernel.injectAuthenticator(authenticator);
}
if (authenticator != null) {
fabric.addAuthenticator(authenticatorDef.authenticatorName(), authenticator);
}
}
protected void createPlanes(Fabric fabric, FabricDef spaceDef) {
for (PlaneDef planeDef : spaceDef.planeDefs()) {
if (fabric.getPlane(planeDef.planeName()) == null) {
createPlane(fabric, planeDef);
}
}
}
protected void createPlane(Fabric fabric, PlaneDef planeDef) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
final PlaneFactory planeFactory = kernel.createPlaneFactory(planeDef, null);
if (planeFactory != null) {
fabric.openPlane(planeDef.planeName(), planeFactory);
} else {
throw new PlaneException("No factory for plane: " + planeDef.planeName());
}
}
@Override
public Space getSpace(String spaceName) {
Space space = getFabric(spaceName);
if (space == null) {
space = super.getSpace(spaceName);
}
return space;
}
public Fabric getFabric(String spaceName) {
return this.fabrics.get(spaceName);
}
@Override
public MeshDef defineMesh(Item meshConfig) {
final MeshDef meshDef = defineFabricMesh(meshConfig);
return meshDef != null ? meshDef : super.defineMesh(meshConfig);
}
public FabricMeshDef defineFabricMesh(Item meshConfig) {
final Value value = meshConfig.toValue();
final Value header = value.getAttr("mesh");
if (header.isDefined()) {
final String fabricProvider = header.get("provider").stringValue(null);
if (fabricProvider == null || FabricKernel.class.getName().equals(fabricProvider)) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
Uri meshUri = Uri.empty();
HashTrieMap partDefs = HashTrieMap.empty();
UriMapper hostDefs = UriMapper.empty();
UriMapper nodeDefs = UriMapper.empty();
UriMapper laneDefs = UriMapper.empty();
LogDef logDef = null;
PolicyDef policyDef = null;
StageDef stageDef = null;
StoreDef storeDef = null;
for (int i = 0, n = value.length(); i < n; i += 1) {
final Item item = value.getItem(i);
if (item.keyEquals("uri")) {
meshUri = item.toValue().cast(Uri.form(), meshUri);
continue;
}
final PartDef partDef = kernel.definePart(item);
if (partDef != null) {
partDefs = partDefs.updated(partDef.partKey(), partDef);
continue;
}
final HostDef hostDef = kernel.defineHost(item);
if (hostDef != null) {
hostDefs = hostDefs.updated(hostDef.hostPattern(), hostDef);
continue;
}
final NodeDef nodeDef = kernel.defineNode(item);
if (nodeDef != null) {
nodeDefs = nodeDefs.updated(nodeDef.nodePattern(), nodeDef);
continue;
}
final LaneDef laneDef = kernel.defineLane(item);
if (laneDef != null) {
laneDefs = laneDefs.updated(laneDef.lanePattern(), laneDef);
continue;
}
final LogDef newLogDef = kernel.defineLog(item);
if (newLogDef != null) {
logDef = newLogDef;
continue;
}
final PolicyDef newPolicyDef = kernel.definePolicy(item);
if (newPolicyDef != null) {
policyDef = newPolicyDef;
continue;
}
final StageDef newStageDef = kernel.defineStage(item);
if (newStageDef != null) {
stageDef = newStageDef;
continue;
}
final StoreDef newStoreDef = kernel.defineStore(item);
if (newStoreDef != null) {
storeDef = newStoreDef;
continue;
}
}
return new FabricMeshDef(meshUri, partDefs, hostDefs, nodeDefs, laneDefs,
logDef, policyDef, stageDef, storeDef);
}
}
return null;
}
@Override
public PartDef definePart(Item partConfig) {
final PartDef partDef = defineFabricPart(partConfig);
return partDef != null ? partDef : super.definePart(partConfig);
}
public FabricPartDef defineFabricPart(Item partConfig) {
final Value value = partConfig.toValue();
final Value header = value.getAttr("part");
if (header.isDefined()) {
final String fabricProvider = header.get("provider").stringValue(null);
if (fabricProvider == null || FabricKernel.class.getName().equals(fabricProvider)) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
Value partKey = null;
PartPredicate predicate = null;
boolean isGateway = false;
UriMapper hostDefs = UriMapper.empty();
UriMapper nodeDefs = UriMapper.empty();
UriMapper laneDefs = UriMapper.empty();
LogDef logDef = null;
PolicyDef policyDef = null;
StageDef stageDef = null;
StoreDef storeDef = null;
for (int i = 0, n = value.length(); i < n; i += 1) {
final Item item = value.getItem(i);
if (item.keyEquals("key")) {
partKey = item.toValue();
continue;
}
if (item.keyEquals("predicate")) {
predicate = PartPredicate.fromValue(item.toValue());
continue;
}
if (item.keyEquals("isGateway")) {
isGateway = item.toValue().booleanValue(isGateway);
continue;
}
final HostDef hostDef = kernel.defineHost(item);
if (hostDef != null) {
hostDefs = hostDefs.updated(hostDef.hostPattern(), hostDef);
continue;
}
final NodeDef nodeDef = kernel.defineNode(item);
if (nodeDef != null) {
nodeDefs = nodeDefs.updated(nodeDef.nodePattern(), nodeDef);
continue;
}
final LaneDef laneDef = kernel.defineLane(item);
if (laneDef != null) {
laneDefs = laneDefs.updated(laneDef.lanePattern(), laneDef);
continue;
}
final LogDef newLogDef = kernel.defineLog(item);
if (newLogDef != null) {
logDef = newLogDef;
continue;
}
final PolicyDef newPolicyDef = kernel.definePolicy(item);
if (newPolicyDef != null) {
policyDef = newPolicyDef;
continue;
}
final StageDef newStageDef = kernel.defineStage(item);
if (newStageDef != null) {
stageDef = newStageDef;
continue;
}
final StoreDef newStoreDef = kernel.defineStore(item);
if (newStoreDef != null) {
storeDef = newStoreDef;
continue;
}
}
if (partKey != null && predicate != null) {
return new FabricPartDef(partKey, predicate, isGateway, hostDefs, nodeDefs,
laneDefs, logDef, policyDef, stageDef, storeDef);
}
}
}
return null;
}
@Override
public HostDef defineHost(Item hostConfig) {
final HostDef hostDef = defineFabricHost(hostConfig);
return hostDef != null ? hostDef : super.defineHost(hostConfig);
}
public FabricHostDef defineFabricHost(Item hostConfig) {
final Value value = hostConfig.toValue();
final Value header = value.getAttr("host");
if (header.isDefined()) {
final String fabricProvider = header.get("provider").stringValue(null);
if (fabricProvider == null || FabricKernel.class.getName().equals(fabricProvider)) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
UriPattern hostPattern = UriPattern.empty();
boolean isPrimary = false;
boolean isReplica = false;
UriMapper nodeDefs = UriMapper.empty();
UriMapper laneDefs = UriMapper.empty();
LogDef logDef = null;
PolicyDef policyDef = null;
StageDef stageDef = null;
StoreDef storeDef = null;
for (int i = 0, n = value.length(); i < n; i += 1) {
final Item item = value.getItem(i);
if (item.keyEquals("uri") || item.keyEquals("pattern")) {
hostPattern = item.toValue().cast(UriPattern.form(), hostPattern);
continue;
}
if (item.keyEquals("primary") || item.keyEquals("isPrimary")) {
isPrimary = item.toValue().booleanValue(isPrimary);
continue;
}
if (item.keyEquals("replica") || item.keyEquals("isReplica")) {
isReplica = item.toValue().booleanValue(isReplica);
continue;
}
final NodeDef nodeDef = kernel.defineNode(item);
if (nodeDef != null) {
nodeDefs = nodeDefs.updated(nodeDef.nodePattern(), nodeDef);
continue;
}
final LaneDef laneDef = kernel.defineLane(item);
if (laneDef != null) {
laneDefs = laneDefs.updated(laneDef.lanePattern(), laneDef);
continue;
}
final LogDef newLogDef = kernel.defineLog(item);
if (newLogDef != null) {
logDef = newLogDef;
continue;
}
final PolicyDef newPolicyDef = kernel.definePolicy(item);
if (newPolicyDef != null) {
policyDef = newPolicyDef;
continue;
}
final StageDef newStageDef = kernel.defineStage(item);
if (newStageDef != null) {
stageDef = newStageDef;
continue;
}
final StoreDef newStoreDef = kernel.defineStore(item);
if (newStoreDef != null) {
storeDef = newStoreDef;
continue;
}
}
return new FabricHostDef(hostPattern, isPrimary, isReplica, nodeDefs,
laneDefs, logDef, policyDef, stageDef, storeDef);
}
}
return null;
}
@Override
public NodeDef defineNode(Item nodeConfig) {
final NodeDef nodeDef = defineFabricNode(nodeConfig);
return nodeDef != null ? nodeDef : super.defineNode(nodeConfig);
}
public FabricNodeDef defineFabricNode(Item nodeConfig) {
final Value value = nodeConfig.toValue();
final Value header = value.getAttr("node");
if (header.isDefined()) {
final String fabricProvider = header.get("provider").stringValue(null);
if (fabricProvider == null || FabricKernel.class.getName().equals(fabricProvider)) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
UriPattern nodePattern = null;
FingerTrieSeq agentDefs = FingerTrieSeq.empty();
UriMapper laneDefs = UriMapper.empty();
LogDef logDef = null;
PolicyDef policyDef = null;
StageDef stageDef = null;
StoreDef storeDef = null;
for (int i = 0, n = value.length(); i < n; i += 1) {
final Item item = value.getItem(i);
if (item.keyEquals("uri") || item.keyEquals("pattern")) {
nodePattern = item.toValue().cast(UriPattern.form(), nodePattern);
continue;
}
final AgentDef agentDef = kernel.defineAgent(item);
if (agentDef != null) {
agentDefs = agentDefs.appended(agentDef);
continue;
}
final LaneDef laneDef = kernel.defineLane(item);
if (laneDef != null) {
laneDefs = laneDefs.updated(laneDef.lanePattern(), laneDef);
continue;
}
final LogDef newLogDef = kernel.defineLog(item);
if (newLogDef != null) {
logDef = newLogDef;
continue;
}
final PolicyDef newPolicyDef = kernel.definePolicy(item);
if (newPolicyDef != null) {
policyDef = newPolicyDef;
continue;
}
final StageDef newStageDef = kernel.defineStage(item);
if (newStageDef != null) {
stageDef = newStageDef;
continue;
}
final StoreDef newStoreDef = kernel.defineStore(item);
if (newStoreDef != null) {
storeDef = newStoreDef;
continue;
}
}
if (nodePattern != null) {
return new FabricNodeDef(nodePattern, agentDefs, laneDefs,
logDef, policyDef, stageDef, storeDef);
}
}
}
return null;
}
@Override
public LaneDef defineLane(Item laneConfig) {
final LaneDef laneDef = defineFabricLane(laneConfig);
return laneDef != null ? laneDef : super.defineLane(laneConfig);
}
public FabricLaneDef defineFabricLane(Item laneConfig) {
final Value value = laneConfig.toValue();
final Value header = value.getAttr("lane");
if (header.isDefined()) {
final String fabricProvider = header.get("provider").stringValue(null);
if (fabricProvider == null || FabricKernel.class.getName().equals(fabricProvider)) {
final KernelContext kernel = kernelWrapper().unwrapKernel(KernelContext.class);
final String laneType = header.get("type").stringValue(null);
UriPattern lanePattern = null;
LogDef logDef = null;
PolicyDef policyDef = null;
StageDef stageDef = null;
StoreDef storeDef = null;
for (int i = 0, n = value.length(); i < n; i += 1) {
final Item item = value.getItem(i);
if (item.keyEquals("uri") || item.keyEquals("pattern")) {
lanePattern = item.toValue().cast(UriPattern.form(), lanePattern);
continue;
}
final LogDef newLogDef = kernel.defineLog(item);
if (newLogDef != null) {
logDef = newLogDef;
continue;
}
final PolicyDef newPolicyDef = kernel.definePolicy(item);
if (newPolicyDef != null) {
policyDef = newPolicyDef;
continue;
}
final StageDef newStageDef = kernel.defineStage(item);
if (newStageDef != null) {
stageDef = newStageDef;
continue;
}
final StoreDef newStoreDef = kernel.defineStore(item);
if (newStoreDef != null) {
storeDef = newStoreDef;
continue;
}
}
if (lanePattern != null) {
return new FabricLaneDef(lanePattern, laneType, logDef, policyDef, stageDef, storeDef);
}
}
}
return null;
}
@Override
public void didStart() {
for (Fabric fabric : this.fabrics.values()) {
fabric.start();
}
}
@Override
public void willStop() {
for (Fabric fabric : this.fabrics.values()) {
fabric.stop();
}
}
private static final double KERNEL_PRIORITY = 1.0;
@SuppressWarnings("unchecked")
static final AtomicReferenceFieldUpdater> FABRICS =
AtomicReferenceFieldUpdater.newUpdater(FabricKernel.class, (Class>) (Class) HashTrieMap.class, "fabrics");
public static FabricKernel fromValue(Value moduleConfig) {
final Value header = moduleConfig.getAttr("kernel");
final String kernelClassName = header.get("class").stringValue(null);
if (kernelClassName == null || FabricKernel.class.getName().equals(kernelClassName)) {
final double kernelPriority = header.get("priority").doubleValue(KERNEL_PRIORITY);
return new FabricKernel(kernelPriority);
}
return null;
}
}
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