Factored into separate crate

.gitignore

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+/Cargo.lock
+/target

Cargo.toml

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+[package]
+name = "daqbuf-series"
+version = "0.0.2"
+authors = ["Dominik Werder <dominik.werder@gmail.com>"]
+edition = "2021"
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+#log = { path = "../log" }

src/lib.rs

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+pub mod series;
+
+pub use series::ChannelStatusSeriesId;
+pub use series::SeriesId;
+
+// use log::*;
+
+// pub fn log_test() {
+//     info!("log-test");
+//     warn!("log-test");
+//     error!("log-test");
+//     debug!("log-test");
+//     trace!("log-test");
+// }

src/series.rs

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+use core::fmt;
+use serde::Deserialize;
+use serde::Serialize;
+
+#[derive(Clone, Debug)]
+pub enum Existence<T> {
+    Created(T),
+    Existing(T),
+}
+
+impl<T> Existence<T> {
+    pub fn into_inner(self) -> T {
+        use Existence::*;
+        match self {
+            Created(x) => x,
+            Existing(x) => x,
+        }
+    }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+pub struct SeriesId(u64);
+
+impl SeriesId {
+    pub fn new(id: u64) -> Self {
+        Self(id)
+    }
+
+    pub fn id(&self) -> u64 {
+        self.0
+    }
+
+    pub fn to_i64(&self) -> i64 {
+        self.0 as i64
+    }
+}
+
+impl fmt::Display for SeriesId {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        write!(fmt, "SeriesId {{ {:20} }}", self.0)
+    }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+pub struct ChannelStatusSeriesId(u64);
+
+impl ChannelStatusSeriesId {
+    pub fn new(id: u64) -> Self {
+        Self(id)
+    }
+
+    pub fn id(&self) -> u64 {
+        self.0
+    }
+
+    pub fn to_i64(&self) -> i64 {
+        self.0 as i64
+    }
+}