🚸 csv output export a date and the kind of the current line

Cargo.toml

@@ -23,6 +23,7 @@ itertools = "0.9.0"
 prettytable-rs = { version = "0.8.0", default-features = false}
 structopt = "0.3.16"
 openssl = { version = "0.10.30", features = ["vendored"] }
+chrono = "0.4.15"
 
 [dev-dependencies]
 spectral = "0.6.0"

README.md

@@ -133,34 +133,34 @@ In this case value as expanded as float (with 2 decimal)
 
 ```sh
 kubectl-view-allocations -o csv
-resource,node,pod,Requested,%Requested,Limit,%Limit,Allocatable,Free
-cpu,,,59.84,22%,104.10,38%,272.00,167.90
-cpu,node-gpu1,,2.31,19%,4.47,37%,12.00,7.53
-cpu,node-gpu1,zzz-b8bd56fbd-5x8vq,1.00,,2.00,,,
-cpu,node-gpu1,kube-flannel-ds-amd64-7dz9z,0.10,,0.10,,,
-cpu,node-gpu1,node-exporter-gpu-b4w7s,0.11,,0.22,,,
-cpu,node-gpu1,xxx-backend-7d84544458-46qnh,1.00,,2.00,,,
-cpu,node-gpu1,weave-scope-agent-bbdnz,0.10,,0.15,,,
-cpu,node-gpu2,,0.31,1%,0.47,2%,24.00,23.53
-cpu,node-gpu2,kube-flannel-ds-amd64-b5b4v,0.10,,0.10,,,
-cpu,node-gpu2,node-exporter-gpu-796jz,0.11,,0.22,,,
-cpu,node-gpu2,weave-scope-agent-8rhnd,0.10,,0.15,,,
-cpu,node-gpu3,,3.41,11%,6.67,21%,32.00,25.33
+Date,Kind,resource,node,pod,Requested,%Requested,Limit,%Limit,Allocatable,Free
+2020-08-19T19:12:48.326605746+00:00,resource,cpu,,,59.94,22%,106.10,39%,272.00,165.90
+2020-08-19T19:12:48.326605746+00:00,node,cpu,node-gpu1,,2.31,19%,4.47,37%,12.00,7.53
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu1,yyy-b8bd56fbd-5x8vq,1.00,,2.00,,,
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu1,kube-flannel-ds-amd64-7dz9z,0.10,,0.10,,,
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu1,node-exporter-gpu-b4w7s,0.11,,0.22,,,
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu1,xxx-backend-7d84544458-46qnh,1.00,,2.00,,,
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu1,weave-scope-agent-bbdnz,0.10,,0.15,,,
+2020-08-19T19:12:48.326605746+00:00,node,cpu,node-gpu2,,0.31,1%,0.47,2%,24.00,23.53
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu2,kube-flannel-ds-amd64-b5b4v,0.10,,0.10,,,
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu2,node-exporter-gpu-796jz,0.11,,0.22,,,
+2020-08-19T19:12:48.326605746+00:00,pod,cpu,node-gpu2,weave-scope-agent-8rhnd,0.10,,0.15,,,
+2020-08-19T19:12:48.326605746+00:00,node,cpu,node-gpu3,,3.41,11%,6.67,21%,32.00,25.33
 ...
 ```
 
 It can be combined with "group-by" options.
 
 ```sh
 kubectl-view-allocations -g resource -o csv
-resource,Requested,%Requested,Limit,%Limit,Allocatable,Free
-cpu,59.84,22%,104.10,38%,272.00,167.90
-ephemeral-storage,0.00,0%,0.00,0%,34462898618662.00,34462898618662.00
-hugepages-1Gi,0.00,,0.00,,,
-hugepages-2Mi,0.00,,0.00,,,
-memory,67989667840.00,9%,216094736384.00,30%,722318667776.00,506223931392.00
-nvidia.com/gpu,2.00,18%,2.00,18%,11.00,9.00
-pods,0.00,0%,0.00,0%,1540.00,1540.00
+Date,Kind,resource,Requested,%Requested,Limit,%Limit,Allocatable,Free
+2020-08-19T19:11:49.630864028+00:00,resource,cpu,59.94,22%,106.10,39%,272.00,165.90
+2020-08-19T19:11:49.630864028+00:00,resource,ephemeral-storage,0.00,0%,0.00,0%,34462898618662.00,34462898618662.00
+2020-08-19T19:11:49.630864028+00:00,resource,hugepages-1Gi,0.00,,0.00,,,
+2020-08-19T19:11:49.630864028+00:00,resource,hugepages-2Mi,0.00,,0.00,,,
+2020-08-19T19:11:49.630864028+00:00,resource,memory,69063409664.00,10%,224684670976.00,31%,722318667776.00,497633996800.00
+2020-08-19T19:11:49.630864028+00:00,resource,nvidia.com/gpu,3.00,27%,3.00,27%,11.00,8.00
+2020-08-19T19:11:49.630864028+00:00,resource,pods,0.00,0%,0.00,0%,1540.00,1540.00
 ```
 
 ## Alternatives

src/main.rs

@@ -2,6 +2,7 @@ mod qty;
 mod tree;
 // mod human_format;
 use anyhow::{anyhow, Context, Result};
+use chrono::prelude::*;
 use env_logger;
 use itertools::Itertools;
 use log::error;
@@ -386,14 +387,22 @@ async fn do_main(cli_opts: &CliOpts) -> Result<()> {
 fn display_as_csv(data: &[(Vec<String>, Option<QtyOfUsage>)], group_by: &[GroupBy]) {
     // print header
     println!(
-        "{},Requested,%Requested,Limit,%Limit,Allocatable,Free",
+        "Date,Kind,{},Requested,%Requested,Limit,%Limit,Allocatable,Free",
         group_by.iter().map(|x| x.to_string()).join(",")
     );
 
     // print data
     let empty = "".to_string();
+    let datetime = Utc::now().to_rfc3339();
     for (k, oqtys) in data {
         let mut row = vec![];
+        row.push(datetime.clone());
+        row.push(
+            group_by
+                .get(k.len() - 1)
+                .map(|x| x.to_string())
+                .unwrap_or_else(|| empty.clone()),
+        );
         for i in 0..group_by.len() {
             row.push(k.get(i).cloned().unwrap_or_else(|| empty.clone()));
         }