Merge branch 'feat/2.x-tagging' into 'feat/2.x'

Add support for resource tagging

See merge request opendc/opendc-simulator!26

2 files changed, 73 insertions, 0 deletions

diff --git a/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/resource/Resource.kt b/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/resource/Resource.kt
new file mode 100644
index 00000000..25a494bc
--- /dev/null
+++ b/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/resource/Resource.kt
@@ -0,0 +1,37 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 atlarge-research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.atlarge.opendc.core.resource
+
+import com.atlarge.opendc.core.Identity
+
+/**
+ * Represents a generic cloud resource.
+ */
+public interface Resource : Identity {
+    /**
+     * The tags of this cloud resource.
+     */
+    public val tags: TagContainer
+}
diff --git a/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/resource/TagContainer.kt b/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/resource/TagContainer.kt
new file mode 100644
index 00000000..6ba1cf0b
--- /dev/null
+++ b/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/resource/TagContainer.kt
@@ -0,0 +1,36 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 atlarge-research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.atlarge.opendc.core.resource
+
+/**
+ * An immutable map containing the tags of some resource.
+ */
+typealias TagContainer = Map<String, Any>
+
+/**
+ * Obtain the value of the tag with the specified [key] of type [T]. If the tag does not exist or the tag is of
+ * different type, `null` is returned.
+ */
+inline fun <reified T : Any> TagContainer.typed(key: String): T? = this[key] as? T