feat: martian-pipestance crate

.gitignore

@@ -3,3 +3,4 @@ martian-filetypes/example.bincode
 martian-filetypes/example.json
 martian-filetypes/example_lazy.bincode
 martian-filetypes/example_lazy.json
+.DS_Store

Cargo.toml

@@ -5,4 +5,5 @@ members = [
     "martian-derive",
     "martian-lab",
     "martian-filetypes",
-]
+    "martian-pipestance",
+]

martian-pipestance/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "martian-pipestance"
+version = "0.1.0"
+authors = ["Sreenath Krishnan <sreenath.krishnan@10xgenomics.com>"]
+edition = "2021"
+include = ["src/**/*"]
+license = "MIT"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+serde = { version = "1.0", features = ['derive'] }
+serde_json = "1.0"
+anyhow = { version = "1", features = ["backtrace"] }
+ordered-float = ">=3.7"
+petgraph = { version = "0.6", default-features = false }
+
+[dev-dependencies]
+zstd = "0.12.4"

martian-pipestance/src/common.rs

@@ -0,0 +1,19 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "snake_case")]
+pub enum NodeType {
+    Pipeline,
+    Stage,
+}
+
+#[cfg(test)]
+pub fn read_zst(fname: &str) -> anyhow::Result<String> {
+    use anyhow::Context;
+    use std::io::Read;
+    let mut file = std::fs::File::open(fname).context(format!("While opening {fname}"))?;
+    let mut decoder = zstd::stream::read::Decoder::new(&mut file)?;
+    let mut buffer = String::new();
+    decoder.read_to_string(&mut buffer)?;
+    Ok(buffer)
+}