core: Remove OpenDC core module

This change removes the opendc-core module. This module was an artifact
of the old codebase and remained mostly unused. This change removes all
usages of the module and if necessary introduces replacement classes.

12 files changed, 0 insertions, 475 deletions

diff --git a/simulator/opendc-core/build.gradle.kts b/simulator/opendc-core/build.gradle.kts
deleted file mode 100644
index 7e1a4b97..00000000
--- a/simulator/opendc-core/build.gradle.kts
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2017 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.
- */
-
-description = "Base model for datacenter simulation"
-
-/* Build configuration */
-plugins {
-    `kotlin-library-conventions`
-}
-
-dependencies {
-    api(platform(project(":opendc-platform")))
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
-}
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Environment.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/Environment.kt
deleted file mode 100644
index a5055cff..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Environment.kt
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * 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 org.opendc.core
-
-/**
- * A description of a large-scale computing environment. This description includes including key size and topology
- * information of the environment, types of resources, but also various operational and management rules such as
- * scheduled maintenance, allocation and other constraints.
- *
- * @property name The name of the environment.
- * @property description A small textual description about the environment that is being modeled.
- * @property platforms The cloud platforms (such as AWS or GCE) in this environment.
- */
-public data class Environment(val name: String, val description: String?, val platforms: List<Platform>)
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Identity.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/Identity.kt
deleted file mode 100644
index 252c40f5..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Identity.kt
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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 org.opendc.core
-
-import java.util.*
-
-/**
- * An object that has a unique identity.
- */
-public interface Identity {
-    /**
-     * A unique, opaque, system-generated value, representing the object.
-     */
-    public val uid: UUID
-
-    /**
-     * A non-empty, human-readable string representing the object.
-     */
-    public val name: String
-}
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Platform.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/Platform.kt
deleted file mode 100644
index 5550ffed..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Platform.kt
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * 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 org.opendc.core
-
-import java.util.*
-
-/**
- * A representation of a cloud platform such as Amazon Web Services (AWS), Microsoft Azure or Google Cloud.
- *
- * @property uid The unique identifier of this topology.
- * @property name the name of the platform.
- * @property zones The availability zones available on this platform.
- */
-public data class Platform(override val uid: UUID, override val name: String, val zones: List<Zone>) : Identity
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/User.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/User.kt
deleted file mode 100644
index fc542cef..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/User.kt
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * 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 org.opendc.core
-
-/**
- * A user of the cloud network.
- */
-public interface User : Identity {
-    /**
-     * The name of the user.
-     */
-    override val name: String
-}
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Zone.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/Zone.kt
deleted file mode 100644
index 834f6cf2..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/Zone.kt
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * 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 org.opendc.core
-
-import org.opendc.core.services.ServiceRegistry
-import java.util.*
-
-/**
- * An isolated location within a topology region from which public cloud services operate, roughly equivalent to a
- * single topology. Zones contain one or more clusters and secondary storage.
- *
- * This class models *only* the static information of a zone, with dynamic information being contained within the zone's
- * actor. During runtime, it's actor acts as a registry for all the cloud services provided by the zone.
- *
- * @property uid The unique identifier of this availability zone.
- * @property name The name of the zone within its platform.
- * @property services The service registry containing the services of the zone.
- */
-public data class Zone(
-    override val uid: UUID,
-    override val name: String,
-    val services: ServiceRegistry
-) : Identity {
-    override fun equals(other: Any?): Boolean = other is Zone && uid == other.uid
-    override fun hashCode(): Int = uid.hashCode()
-}
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/resource/Resource.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/resource/Resource.kt
deleted file mode 100644
index 5bb2c2ce..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/resource/Resource.kt
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * 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 org.opendc.core.resource
-
-import org.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/simulator/opendc-core/src/main/kotlin/org/opendc/core/resource/TagContainer.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/resource/TagContainer.kt
deleted file mode 100644
index 6a4ff102..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/resource/TagContainer.kt
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * 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 org.opendc.core.resource
-
-/**
- * An immutable map containing the tags of some resource.
- */
-public 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.
- */
-public inline fun <reified T : Any> TagContainer.typed(key: String): T? = this[key] as? T
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceKey.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceKey.kt
deleted file mode 100644
index 9078ecdd..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceKey.kt
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * 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 org.opendc.core.services
-
-import org.opendc.core.Identity
-import java.util.*
-
-/**
- * An interface for identifying service implementations of the same type (providing the same service).
- *
- * @param T The shape of the messages the service responds to.
- */
-public interface ServiceKey<T : Any> : Identity
-
-/**
- * Helper class for constructing a [ServiceKey].
- *
- * @property uid The unique identifier of the service.
- * @property name The name of the service.
- */
-public abstract class AbstractServiceKey<T : Any>(override val uid: UUID, override val name: String) : ServiceKey<T> {
-    override fun equals(other: Any?): Boolean = other is ServiceKey<*> && uid == other.uid
-    override fun hashCode(): Int = uid.hashCode()
-    override fun toString(): String = "ServiceKey[uid=$uid, name=$name]"
-}
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceRegistry.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceRegistry.kt
deleted file mode 100644
index 7434d91c..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceRegistry.kt
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * 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 org.opendc.core.services
-
-/**
- * An immutable service registry interface.
- */
-public interface ServiceRegistry {
-    /**
-     * The keys in this registry.
-     */
-    public val keys: Collection<ServiceKey<*>>
-
-    /**
-     * Determine if this map contains the service with the specified [ServiceKey].
-     *
-     * @param key The key of the service to check for.
-     * @return `true` if the service is in the map, `false` otherwise.
-     */
-    public operator fun contains(key: ServiceKey<*>): Boolean
-
-    /**
-     * Obtain the service with the specified [ServiceKey].
-     *
-     * @param key The key of the service to obtain.
-     * @return The references to the service.
-     * @throws IllegalArgumentException if the key does not exist in the map.
-     */
-    public operator fun <T : Any> get(key: ServiceKey<T>): T
-
-    /**
-     * Return the result of associating the specified [service] with the given [key] in this registry.
-     */
-    public fun <T : Any> put(key: ServiceKey<T>, service: T): ServiceRegistry
-}
-
-/**
- * Construct an empty [ServiceRegistry].
- */
-@Suppress("FunctionName")
-public fun ServiceRegistry(): ServiceRegistry = ServiceRegistryImpl(emptyMap())
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceRegistryImpl.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceRegistryImpl.kt
deleted file mode 100644
index e117bec6..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/services/ServiceRegistryImpl.kt
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * 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 org.opendc.core.services
-
-/**
- * Default implementation of the [ServiceRegistry] interface.
- */
-internal class ServiceRegistryImpl(private val map: Map<ServiceKey<*>, Any>) : ServiceRegistry {
-    override val keys: Collection<ServiceKey<*>>
-        get() = map.keys
-
-    override fun contains(key: ServiceKey<*>): Boolean = key in map
-
-    override fun <T : Any> get(key: ServiceKey<T>): T {
-        @Suppress("UNCHECKED_CAST")
-        return map[key] as T
-    }
-
-    override fun <T : Any> put(key: ServiceKey<T>, service: T): ServiceRegistry =
-        ServiceRegistryImpl(map.plus(key to service))
-
-    override fun toString(): String = map.toString()
-}
diff --git a/simulator/opendc-core/src/main/kotlin/org/opendc/core/workload/Workload.kt b/simulator/opendc-core/src/main/kotlin/org/opendc/core/workload/Workload.kt
deleted file mode 100644
index f0bd1137..00000000
--- a/simulator/opendc-core/src/main/kotlin/org/opendc/core/workload/Workload.kt
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * 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 org.opendc.core.workload
-
-import org.opendc.core.Identity
-import org.opendc.core.User
-
-/**
- * A high-level abstraction that represents the actual work that a set of compute resources perform, such
- * as running an application on a machine or a whole workflow running multiple tasks on numerous machines.
- */
-public interface Workload : Identity {
-    /**
-     * The owner of this workload.
-     */
-    public val owner: User
-}