From 00b269ffcfcbacd2c32fbdfe98e916f5260c8349 Mon Sep 17 00:00:00 2001
From: softprops <d.tangren@gmail.com>
Date: Sun, 3 Jan 2016 17:31:43 -0500
Subject: impl container filter

---
 examples/containers.rs |  9 +++++++--
 src/builder.rs         | 24 ++++++++++++++++++++++++
 src/lib.rs             |  2 ++
 src/transport.rs       |  1 +
 4 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/examples/containers.rs b/examples/containers.rs
index e7987e6..e4df6b3 100644
--- a/examples/containers.rs
+++ b/examples/containers.rs
@@ -1,10 +1,15 @@
 extern crate shiplift;
 
-use shiplift::Docker;
+use shiplift::{ContainerFilter, Docker};
 
 fn main() {
     let docker = Docker::new();
-    for c in docker.containers().list().sized().build().unwrap() {
+    for c in docker.containers().
+        list()
+        .sized()
+        .filter(vec![
+            ContainerFilter::Label("foo".to_owned(), "bar".to_owned())
+                ]).build().unwrap() {
         println!("container -> {:?}", c)
     }
 }
diff --git a/src/builder.rs b/src/builder.rs
index 87b79d5..de83b6a 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -18,6 +18,13 @@ pub struct ContainerListBuilder<'a> {
     params: HashMap<&'static str, String>,
 }
 
+pub enum ContainerFilter {
+    ExitCode(u64),
+    Status(String),
+    LabelName(String),
+    Label(String, String)
+}
+
 impl<'a> ContainerListBuilder<'a> {
     pub fn new(docker: &'a Docker) -> ContainerListBuilder<'a> {
         ContainerListBuilder {
@@ -26,6 +33,23 @@ impl<'a> ContainerListBuilder<'a> {
         }
     }
 
+    pub fn filter(&mut self, filters: Vec<ContainerFilter>) -> &mut ContainerListBuilder<'a> {
+        let mut param = HashMap::new();
+        for f in filters {
+            match f {
+                ContainerFilter::ExitCode(c) => param.insert("exit", vec![c.to_string()]),
+                ContainerFilter::Status(s) => param.insert("status", vec![s]),
+                ContainerFilter::LabelName(n) => param.insert("label", vec![n]),
+                ContainerFilter::Label(n,v) => param.insert("label", vec![format!("{}={}", n, v)])
+            };
+
+        }
+        // structure is a a json encoded object mapping string keys to a list
+        // of string values
+        self.params.insert("filters", json::encode(&param).unwrap());
+        self
+    }
+
     pub fn all(&mut self) -> &mut ContainerListBuilder<'a> {
         self.params.insert("all", "true".to_owned());
         self
diff --git a/src/lib.rs b/src/lib.rs
index 116bb7e..95743bb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -26,6 +26,8 @@ pub mod transport;
 pub mod errors;
 
 pub use errors::Error;
+pub use builder::ContainerFilter;
+
 use builder::{ContainerBuilder, ContainerListBuilder, EventsBuilder};
 use hyper::{Client, Url};
 use hyper::net::{HttpsConnector, Openssl};
diff --git a/src/transport.rs b/src/transport.rs
index e82f5c8..f22027e 100644
--- a/src/transport.rs
+++ b/src/transport.rs
@@ -81,6 +81,7 @@ impl Transport {
                 Ok(Box::new(res))
             }
             StatusCode::NoContent => Ok(Box::new(BufReader::new("".as_bytes()))),
+            // todo: constantize these
             StatusCode::BadRequest => Err(Error::Fault { code: res.status, message: "bad parameter".to_owned() }),
             StatusCode::NotFound => Err(Error::Fault { code: res.status, message: "not found".to_owned() }),
             StatusCode::NotAcceptable => Err(Error::Fault { code: res.status, message: "not acceptable".to_owned() }),
-- 
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