Coana provides a simple model to attach and access properties for analysis purpose.
implementation "xyz.tynn.coana:library:$coanaVersion"
The Coana model contains a scope and a context to distinguish between
different scenarios. Additional to this it contains Double, Long and
String properties mapped to a set of predefined keys. It is accessible with
the CoroutineScope.coana and CoroutineContext.coana extensions.
Every single property is a CoroutineContext.Element by itself and is
contained within the surrounding context. Adding another element with the same
key will override the element while the original is contained within the
original context.
val coanaScope = CoanaScope("scope")
val coanaContext = CoanaContext("context")
sealed class PropertyKey<Value> : CoanaPropertyKey<Value> {
object ApiVersion : PropertyKey<Double>
object AppVersion : PropertyKey<Long>
object Dependency : PropertyKey<String>
}
val coanaDouble = CoanaProperty(ApiVersion, 1.2)
val coanaLong = CoanaProperty(AppVersion, 3)
val coanaString = CoanaProperty(Dependency, "4.5.6")
assert(coana.scope == "scope")
assert(coana.context == "context")
assert(coana.doubleProperties[ApiVersion] == 1.2)
assert(coana.longProperties[AppVersion] == 3)
assert(coana.stringProperties[Dependency] == "4.5.6")
val coana = withCoanaScope("scope") {
withCoanaContext("context) {
withCoanaProperty(ApiVersion, 1.2) {
withContext(coanaLong + coanaString) {
coana
}
}
}
}
The MetaData provides a generic implementation of a key-value pair attached
to a CoroutineContext.
object StringKey : Key<String>
val meta = MetaData(StringKey, "stringValue")
val data = withContext(meta) {
coroutineContext[StringKey]
}
assert(meta == data)
Use CoroutineContext.metadata to get all a set of all MetaData attached
to the context.
implementation "xyz.tynn.coana:metadata:$coanaVersion"
Copyright (C) 2019 Christian Schmitz
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.