Switch to dyn events process

disk/src/channelconfig.rs

@@ -0,0 +1,40 @@
+use err::Error;
+use netpod::Channel;
+use netpod::ChannelConfig;
+use netpod::NanoRange;
+use netpod::NodeConfigCached;
+use parse::channelconfig::extract_matching_config_entry;
+use parse::channelconfig::read_local_config;
+use parse::channelconfig::MatchingConfigEntry;
+
+pub async fn config(
+    range: NanoRange,
+    channel: Channel,
+    node_config: &NodeConfigCached,
+) -> Result<ChannelConfig, Error> {
+    let channel_config = read_local_config(channel.clone(), node_config.node.clone()).await?;
+    let entry_res = match extract_matching_config_entry(&range, &channel_config) {
+        Ok(k) => k,
+        Err(e) => return Err(e)?,
+    };
+    let entry = match entry_res {
+        MatchingConfigEntry::None => return Err(Error::with_public_msg("no config entry found"))?,
+        MatchingConfigEntry::Multiple => return Err(Error::with_public_msg("multiple config entries found"))?,
+        MatchingConfigEntry::Entry(entry) => entry,
+    };
+    let shape = match entry.to_shape() {
+        Ok(k) => k,
+        Err(e) => return Err(e)?,
+    };
+    let channel_config = ChannelConfig {
+        channel: channel.clone(),
+        keyspace: entry.ks as u8,
+        time_bin_size: entry.bs,
+        shape: shape,
+        scalar_type: entry.scalar_type.clone(),
+        byte_order: entry.byte_order.clone(),
+        array: entry.is_array,
+        compression: entry.is_compressed,
+    };
+    Ok(channel_config)
+}