Add deployment-specific metadata properties for projects, repositories and app identities

Motivation:

Organizations running Central Dogma often need to attach deployment-specific
properties, such as the identifier of the owning service, to projects,
repositories and app identities. There was no way to declare, validate, store
or retrieve such properties without forking the metadata model.

Modifications:

- Add a `metadataProperties` section to `dogma.json` (and
  `CentralDogmaBuilder.metadataProperties()`) that declares a JSON Schema per
  resource type (`project`, `repo` and `appIdentity`).
- Accept an optional `properties` object in the creation APIs of projects,
  repositories and app identities, and validate it against the declared schema
  with json-schema-validator. A non-conforming request is rejected while
  undeclared properties are silently dropped, so that a new property can be
  declared with a rolling restart.
- Persist the validated properties in `ProjectMetadata`, `RepositoryMetadata`
  and `AppIdentity`, and return them via the retrieval APIs.
- Add `GET /api/v1/metadataProperties` that exposes the declared schemas so
  that clients such as the web UI can render input forms.

Result:

- The server-side extension point of #1346 is now available; the web UI form
  rendering follows in a stacked PR.
- Administrators can require and validate deployment-specific metadata
  properties at creation time. Nothing changes when `metadataProperties` is
  not configured.

Author: ikhoon

NOTICE.txt

@@ -200,6 +200,11 @@ This product depends on Hibernate Validator, distributed by Red Hat, Inc:
   * License: licenses/LICENSE.hibernate.al20.txt
   * Homepage: http://hibernate.org/validator/
 
+This product depends on itu, distributed by Morten Haraldsen:
+
+  * License: licenses/LICENSE.itu.al20.txt (Apache License v2.0)
+  * Homepage: https://github.com/ethlo/itu
+
 This product depends on Jackson, distributed by FasterXML, LLC:
 
   * License: licenses/LICENSE.jackson.al20.txt (Apache License v2.0)
@@ -260,6 +265,11 @@ This product depends on JSch, distributed by JCraft, Inc:
   * License: licenses/LICENSE.jsch.bsd.txt (New BSD License)
   * Homepage: http://www.jcraft.com/jsch/
 
+This product depends on json-schema-validator, distributed by networknt:
+
+  * License: licenses/LICENSE.json-schema-validator.al20.txt (Apache License v2.0)
+  * Homepage: https://github.com/networknt/json-schema-validator
+
 This product depends on JsonUnit, distributed by Lukáš Křečan:
 
   * License: licenses/LICENSE.jsonunit.al20.txt (Apache License v2.0)

common/src/main/java/com/linecorp/centraldogma/internal/api/v1/CreateProjectRequest.java

@@ -24,6 +24,7 @@
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.JsonNode;
 import com.google.common.base.MoreObjects;
 import com.google.common.collect.ImmutableSet;
 
@@ -35,14 +36,18 @@ public class CreateProjectRequest {
     private final String name;
     private final Set<String> owners;
     private final Set<String> members;
+    @Nullable
+    private final JsonNode properties;
 
     @JsonCreator
     public CreateProjectRequest(@JsonProperty("name") String name,
                                 @JsonProperty("owners") @Nullable Set<String> owners,
-                                @JsonProperty("members") @Nullable Set<String> members) {
+                                @JsonProperty("members") @Nullable Set<String> members,
+                                @JsonProperty("properties") @Nullable JsonNode properties) {
         this.name = validateProjectName(name, "name", false);
         this.owners = owners != null ? ImmutableSet.copyOf(owners) : ImmutableSet.of();
         this.members = members != null ? ImmutableSet.copyOf(members) : ImmutableSet.of();
+        this.properties = properties;
     }
 
     @JsonProperty
@@ -60,12 +65,19 @@ public Set<String> members() {
         return members;
     }
 
+    @Nullable
+    @JsonProperty
+    public JsonNode properties() {
+        return properties;
+    }
+
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(this)
                           .add("name", name())
                           .add("owners", owners())
                           .add("members", members())
+                          .add("properties", properties())
                           .toString();
     }
 }

common/src/main/java/com/linecorp/centraldogma/internal/api/v1/CreateRepositoryRequest.java

@@ -23,6 +23,7 @@
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.JsonNode;
 import com.google.common.base.MoreObjects;
 
 /**
@@ -32,12 +33,16 @@ public class CreateRepositoryRequest {
 
     private final String name;
     private final boolean encrypt;
+    @Nullable
+    private final JsonNode properties;
 
     @JsonCreator
     public CreateRepositoryRequest(@JsonProperty("name") String name,
-                                   @JsonProperty("encrypt") @Nullable Boolean encrypt) {
+                                   @JsonProperty("encrypt") @Nullable Boolean encrypt,
+                                   @JsonProperty("properties") @Nullable JsonNode properties) {
         this.name = validateRepositoryName(name, "name");
         this.encrypt = firstNonNull(encrypt, false);
+        this.properties = properties;
     }
 
     @JsonProperty
@@ -50,11 +55,18 @@ public boolean encrypt() {
         return encrypt;
     }
 
+    @Nullable
+    @JsonProperty
+    public JsonNode properties() {
+        return properties;
+    }
+
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(this)
                           .add("name", name())
                           .add("encrypt", encrypt)
+                          .add("properties", properties())
                           .toString();
     }
 }

dependencies.toml

@@ -48,6 +48,7 @@ junit-pioneer = "2.3.0"
 jsch = "0.1.55"
 # Don't update `json-path` version
 json-path = "2.2.0"
+json-schema-validator = "1.5.9"
 # 3.0.0 requires java 17
 json-unit = "2.38.0"
 jsoup = "1.22.2" # JSoup is only used for Gradle script.
@@ -286,6 +287,12 @@ module = "com.jayway.jsonpath:json-path"
 version.ref = "json-path"
 relocations = { from = "com.jayway.jsonpath", to = "com.linecorp.centraldogma.internal.shaded.jsonpath" }
 
+[libraries.json-schema-validator]
+module = "com.networknt:json-schema-validator"
+version.ref = "json-schema-validator"
+# Exclude the differently-versioned jackson-dataformat-yaml edge; :common already provides it.
+exclusions = "com.fasterxml.jackson.dataformat:jackson-dataformat-yaml"
+
 [libraries.json-unit]
 module = "net.javacrumbs.json-unit:json-unit"
 version.ref = "json-unit"

licenses/LICENSE.itu.al20.txt

@@ -0,0 +1,202 @@
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