Crate atter

Configuration management for atter.

Examples

Read from TOML string

    let test_toml = r#"[common]
base_db_path = "/Users/kon8116/projects/kon8116/atters"

[[index]]
idx_prefix = "MslCheckout"

[[index.fields]]
name = "id"
data_type = "Integer"
primary_key = true

[[index.fields]]
name = "correlation_id"
data_type = "Text"
not_null = true

[[index]]
idx_prefix = "ProxyApi"

[[index.fields]]
name = "id"
data_type = "Integer"
primary_key = true

[[index.fields]]
name = "correlation_id"
data_type = "Text"
not_null = true

[prod]
echo_env_affix = "-digital"
verbose = false

[prod.duration]
secs = 900
nanos = 0

[stage]
verbose = false

[stage.duration]
secs = 900
nanos = 0

[test]
verbose = true

[test.duration]
secs = 900
nanos = 0

[dev]
verbose = true

[dev.duration]
secs = 900
nanos = 0
"#;

    // Serialize the TOML above into a `Config` struct.
    let mut reader = Cursor::new(test_toml);
    let config = read_toml(&mut reader)?;

    // Check the `Config` struct.
    let common = config.common();
    let index = config.index();
    let prod = config.prod();
    let stage = config.stage();
    let test = config.test();
    let dev = config.dev();

    assert_eq!(
       common.base_db_path(),
       &PathBuf::from("/Users/kon8116/projects/kon8116/atters")
    );
    assert_eq!(common.search_prefix(), "http://echo".to_string());
    assert_eq!(common.search_affix(), ".kroger.com/elastic".to_string());
    assert_eq!(common.search_suffix(), "/_search".to_string());
    assert_eq!(common.db_prefix(), "ordmon".to_string());
    assert_eq!(common.db_suffix(), ".db".to_string());
    assert_eq!(index.len(), 2);

Write to TOML string

      // Setup the `Config` struct.
      let mut config: Config = Default::default();
      let mut common: Common = Default::default();
      let mut msl_checkout_index: Index = Default::default();
      let mut proxy_api_index: Index = Default::default();
      let mut prod: Environment = Default::default();
      let mut stage: Environment = Default::default();
      let mut test: Environment = Default::default();
      let mut dev: Environment = Default::default();

      common.set_base_db_path(PathBuf::from("/Users/kon8116/projects/kon8116/atters"));

      let mut id: Field = Default::default();
      id.set_name("id".to_string());
      id.set_primary_key(Some(true));

      let mut correlation_id: Field = Default::default();
      correlation_id.set_name("correlation_id".to_string());
      correlation_id.set_data_type(SqliteDataType::Text);
      correlation_id.set_not_null(Some(true));

      msl_checkout_index.set_fields(vec![id.clone(), correlation_id.clone()]);

      proxy_api_index.set_idx_prefix(EchoIndex::ProxyApi);
      proxy_api_index.set_fields(vec![id, correlation_id]);

      prod.set_echo_env_affix(Some("-digital".to_string()));
      prod.set_verbose(false);
      prod.set_duration(Duration::from_millis(900000));

      stage.set_verbose(false);
      stage.set_duration(Duration::from_millis(900000));

      test.set_verbose(true);
      test.set_duration(Duration::from_millis(900000));

      dev.set_verbose(true);
      dev.set_duration(Duration::from_millis(900000));

      config.set_common(common);
      config.set_index(vec![msl_checkout_index, proxy_api_index]);
      config.set_prod(prod);
      config.set_stage(stage);
      config.set_test(test);
      config.set_dev(dev);

      // Write the TOML to the given buf.
      let mut buf = [0; 5000];

      // Wrapped to drop mutable borrow.
      {
        let mut writer = Cursor::new(&mut buf[..]);
        write_toml(&config, &mut writer)?;
      }

      // Check that the result is the same as the TOML above.
      let filtered = buf.iter().filter(|x| **x > 0).cloned().collect::<Vec<u8>>();
      assert_eq!(
          TEST_TOML,
          String::from_utf8(filtered).expect("Invalid UTF-8 in result")
      );

Structs

Common	The common atter config.
Config	The base atter config.
Environment	Environment specific atter config
Error	The Error type.
Field	A field definition
Index	An Echo index config
Message	Struct sent via tx to clients;

Enums

EchoIndex	The Echo index
RuntimeEnvironment	The runtime environment.
SqliteDataType	A sqlite data type

Functions

db_path
echo_url
find_most_recent	Find the largest timestamp value (i.e. most recent)
initialize	Initialize the atter sqlite database.
read_toml	Read TOML from the given reader and deserialize into a Config struct.
scroll_url
write_toml	Write TOML serialized from the Config struct to the given writer.