Rework AugmentRuntimeType and Choice/Case linkage
[mdsal.git] / binding / mdsal-binding-generator / src / main / java / org / opendaylight / mdsal / binding / generator / impl / BindingRuntimeTypesFactory.java
1 /*
2  * Copyright (c) 2021 PANTHEON.tech, s.r.o. and others.  All rights reserved.
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6  * and is available at http://www.eclipse.org/legal/epl-v10.html
7  */
8 package org.opendaylight.mdsal.binding.generator.impl;
9
10 import static com.google.common.base.Verify.verify;
11
12 import com.google.common.base.Stopwatch;
13 import com.google.common.collect.HashMultimap;
14 import com.google.common.collect.SetMultimap;
15 import java.util.HashMap;
16 import java.util.Map;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.opendaylight.mdsal.binding.generator.impl.reactor.AbstractExplicitGenerator;
19 import org.opendaylight.mdsal.binding.generator.impl.reactor.Generator;
20 import org.opendaylight.mdsal.binding.generator.impl.reactor.GeneratorReactor;
21 import org.opendaylight.mdsal.binding.generator.impl.reactor.IdentityGenerator;
22 import org.opendaylight.mdsal.binding.generator.impl.reactor.ModuleGenerator;
23 import org.opendaylight.mdsal.binding.generator.impl.reactor.RpcGenerator;
24 import org.opendaylight.mdsal.binding.generator.impl.reactor.RpcInputGenerator;
25 import org.opendaylight.mdsal.binding.generator.impl.reactor.RpcOutputGenerator;
26 import org.opendaylight.mdsal.binding.generator.impl.reactor.TypeBuilderFactory;
27 import org.opendaylight.mdsal.binding.generator.impl.rt.DefaultBindingRuntimeTypes;
28 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
29 import org.opendaylight.mdsal.binding.model.api.JavaTypeName;
30 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeTypes;
31 import org.opendaylight.mdsal.binding.runtime.api.CaseRuntimeType;
32 import org.opendaylight.mdsal.binding.runtime.api.IdentityRuntimeType;
33 import org.opendaylight.mdsal.binding.runtime.api.InputRuntimeType;
34 import org.opendaylight.mdsal.binding.runtime.api.ModuleRuntimeType;
35 import org.opendaylight.mdsal.binding.runtime.api.OutputRuntimeType;
36 import org.opendaylight.mdsal.binding.runtime.api.RuntimeType;
37 import org.opendaylight.yangtools.concepts.Mutable;
38 import org.opendaylight.yangtools.yang.common.QName;
39 import org.opendaylight.yangtools.yang.common.QNameModule;
40 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
43
44 final class BindingRuntimeTypesFactory implements Mutable {
45     private static final Logger LOG = LoggerFactory.getLogger(BindingRuntimeTypesFactory.class);
46
47     // Modules, indexed by their QNameModule
48     private final Map<QNameModule, ModuleRuntimeType> modules = new HashMap<>();
49     // Identities, indexed by their QName
50     private final Map<QName, IdentityRuntimeType> identities = new HashMap<>();
51     // All known types, indexed by their JavaTypeName
52     private final Map<JavaTypeName, RuntimeType> allTypes = new HashMap<>();
53     // All RpcOutputs, indexed by their RPC's QName
54     private final Map<QName, OutputRuntimeType> rpcOutputs = new HashMap<>();
55     // All RpcInputs, indexed by their RPC's QName
56     private final Map<QName, InputRuntimeType> rpcInputs = new HashMap<>();
57     // All known 'choice's to their corresponding cases
58     private final SetMultimap<JavaTypeName, CaseRuntimeType> choiceToCases = HashMultimap.create();
59
60     private BindingRuntimeTypesFactory() {
61         // Hidden on purpose
62     }
63
64     static @NonNull BindingRuntimeTypes createTypes(final @NonNull EffectiveModelContext context) {
65         final var moduleGens = new GeneratorReactor(context).execute(TypeBuilderFactory.runtime());
66
67         final Stopwatch sw = Stopwatch.createStarted();
68         final BindingRuntimeTypesFactory factory = new BindingRuntimeTypesFactory();
69         factory.indexModules(moduleGens);
70         LOG.debug("Indexed {} generators in {}", moduleGens.size(), sw);
71
72         return new DefaultBindingRuntimeTypes(context, factory.modules, factory.allTypes, factory.identities,
73             factory.rpcInputs, factory.rpcOutputs, factory.choiceToCases);
74     }
75
76     private void indexModules(final Map<QNameModule, ModuleGenerator> moduleGens) {
77         for (var entry : moduleGens.entrySet()) {
78             final var modGen = entry.getValue();
79
80             // index the module's runtime type
81             safePut(modules, "modules", entry.getKey(), modGen.runtimeType().orElseThrow());
82
83             // index module's identities and RPC input/outputs
84             for (var gen : modGen) {
85                 if (gen instanceof IdentityGenerator) {
86                     ((IdentityGenerator) gen).runtimeType().ifPresent(identity -> {
87                         safePut(identities, "identities", identity.statement().argument(), identity);
88                     });
89                 }
90                 // FIXME: do not collect these once we they generate a proper RuntimeType
91                 if (gen instanceof RpcGenerator) {
92                     final QName rpcName = ((RpcGenerator) gen).statement().argument();
93                     for (var subgen : gen) {
94                         if (subgen instanceof RpcInputGenerator) {
95                             ((RpcInputGenerator) subgen).runtimeType()
96                                 .ifPresent(input -> rpcInputs.put(rpcName, input));
97                         } else if (subgen instanceof RpcOutputGenerator) {
98                             ((RpcOutputGenerator) subgen).runtimeType()
99                                 .ifPresent(output -> rpcOutputs.put(rpcName, output));
100                         }
101                     }
102                 }
103             }
104         }
105
106         indexRuntimeTypes(moduleGens.values());
107     }
108
109     private void indexRuntimeTypes(final Iterable<? extends Generator> generators) {
110         for (Generator gen : generators) {
111             if (gen instanceof AbstractExplicitGenerator && gen.generatedType().isPresent()) {
112                 final var type = ((AbstractExplicitGenerator<?, ?>) gen).runtimeType().orElseThrow();
113                 final var javaType = type.javaType();
114                 if (javaType instanceof GeneratedType) {
115                     final var name = javaType.getIdentifier();
116                     final var prev = allTypes.put(name, type);
117                     verify(prev == null || prev == type, "Conflict on runtime type mapping of %s between %s and %s",
118                         name, prev, type);
119
120                     // Global indexing of cases generated for a particular choice. We look at the Generated type
121                     // and make assumptions about its shape -- which works just fine without touching the
122                     // ChoiceRuntimeType for cases.
123                     if (type instanceof CaseRuntimeType) {
124                         final var ifaces = ((GeneratedType) javaType).getImplements();
125                         // The appropriate choice and DataObject at the very least. The choice interface is the first
126                         // one mentioned.
127                         verify(ifaces.size() >= 2, "Unexpected implemented interfaces %s", ifaces);
128                         choiceToCases.put(ifaces.get(0).getIdentifier(), (CaseRuntimeType) type);
129                     }
130                 }
131             }
132             indexRuntimeTypes(gen);
133         }
134     }
135
136     private static <K, V> void safePut(final Map<K, V> map, final String name, final K key, final V value) {
137         final var prev = map.put(key, value);
138         verify(prev == null, "Conflict in %s, key %s conflicts on %s versus %s", name, key, prev, value);
139     }
140 }