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de.rs
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de.rs
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use crate::{KubernetesLabelKey, KubernetesTaintValue, RegistryMirror};
use serde::de::value::SeqAccessDeserializer;
use serde::de::{Error, MapAccess, SeqAccess, Visitor};
use serde::{Deserialize, Deserializer};
use std::collections::HashMap;
use std::convert::TryFrom;
use std::fmt::Formatter;
use toml::Value;
// Our standard representation of node-taints is a `HashMap` of label keys to a list of taint values and effects;
// for backward compatibility, we also allow a `HashMap` of label keys to a singular taint value/effect.
pub(crate) fn deserialize_node_taints<'de, D>(
deserializer: D,
) -> Result<Option<HashMap<KubernetesLabelKey, Vec<KubernetesTaintValue>>>, D::Error>
where
D: Deserializer<'de>,
{
struct NodeTaints;
impl<'de> Visitor<'de> for NodeTaints {
type Value = Option<HashMap<KubernetesLabelKey, Vec<KubernetesTaintValue>>>;
fn expecting(&self, formatter: &mut Formatter) -> std::fmt::Result {
formatter.write_str("TOML table")
}
fn visit_map<M>(self, mut map: M) -> Result<Self::Value, M::Error>
where
M: MapAccess<'de>,
{
let mut node_taints: HashMap<KubernetesLabelKey, Vec<KubernetesTaintValue>> =
HashMap::new();
while let Some((k, v)) = map.next_entry()? {
match v {
// If we encounter a singular mapped value, convert it into a list of one
Value::String(taint_val) => {
node_taints.insert(
k,
vec![KubernetesTaintValue::try_from(taint_val)
.map_err(M::Error::custom)?],
);
}
// If we encounter a list of values, just insert it as is
Value::Array(taint_values) => {
let taint_values = taint_values
.iter()
.map(|v| v.to_owned().try_into().map_err(M::Error::custom))
.collect::<Result<Vec<KubernetesTaintValue>, _>>()?;
if taint_values.is_empty() {
return Err(M::Error::custom("empty taint value"));
}
node_taints.insert(k, taint_values);
}
_ => {
return Err(M::Error::custom("unsupported taint value type"));
}
}
}
Ok(Some(node_taints))
}
}
deserializer.deserialize_map(NodeTaints)
}
#[cfg(test)]
mod node_taint_tests {
use crate::{KubernetesSettings, KubernetesTaintValue};
use std::convert::TryFrom;
static TEST_NODE_TAINT_LIST: &str = include_str!("../tests/data/node-taint-list-val");
static TEST_NODE_TAINT_SINGLE: &str = include_str!("../tests/data/node-taint-single-val");
static TEST_NODE_TAINT_EMPTY_LIST: &str = include_str!("../tests/data/node-taint-empty-list");
#[test]
fn node_taints_list_representation() {
let k8s_settings = toml::from_str::<KubernetesSettings>(TEST_NODE_TAINT_LIST).unwrap();
assert_eq!(
k8s_settings
.node_taints
.as_ref()
.unwrap()
.get("key1")
.unwrap()
.to_owned(),
vec![
KubernetesTaintValue::try_from("value1:NoSchedule").unwrap(),
KubernetesTaintValue::try_from("value1:NoExecute").unwrap()
]
);
assert_eq!(
k8s_settings
.node_taints
.as_ref()
.unwrap()
.get("key2")
.unwrap()
.to_owned(),
vec![KubernetesTaintValue::try_from("value2:NoSchedule").unwrap()]
);
}
#[test]
fn node_taint_single_representation() {
let k8s_settings = toml::from_str::<KubernetesSettings>(TEST_NODE_TAINT_SINGLE).unwrap();
assert_eq!(
k8s_settings
.node_taints
.as_ref()
.unwrap()
.get("key1")
.unwrap()
.to_owned(),
vec![KubernetesTaintValue::try_from("value1:NoSchedule").unwrap()]
);
assert_eq!(
k8s_settings
.node_taints
.as_ref()
.unwrap()
.get("key2")
.unwrap()
.to_owned(),
vec![KubernetesTaintValue::try_from("value2:NoExecute").unwrap()]
);
}
#[test]
fn node_taint_none_representation() {
let k8s_settings = toml::from_str::<KubernetesSettings>("").unwrap();
assert!(k8s_settings.node_taints.is_none());
}
#[test]
fn node_taint_empty_list() {
assert!(toml::from_str::<KubernetesSettings>(TEST_NODE_TAINT_EMPTY_LIST).is_err());
}
}
// Our standard representation of registry mirrors is a `Vec` of `RegistryMirror`; for backward compatibility, we also allow a `HashMap` of registry to endpoints.
pub(crate) fn deserialize_mirrors<'de, D>(
deserializer: D,
) -> Result<Option<Vec<RegistryMirror>>, D::Error>
where
D: Deserializer<'de>,
{
struct TableOrArray;
impl<'de> Visitor<'de> for TableOrArray {
type Value = Option<Vec<RegistryMirror>>;
fn expecting(&self, formatter: &mut Formatter) -> std::fmt::Result {
formatter.write_str("TOML array or TOML table")
}
fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
Ok(Some(Deserialize::deserialize(SeqAccessDeserializer::new(
seq,
))?))
}
fn visit_map<M>(self, mut map: M) -> Result<Self::Value, M::Error>
where
M: MapAccess<'de>,
{
let mut vec = Vec::new();
while let Some((k, v)) = map.next_entry()? {
vec.push(RegistryMirror {
registry: Some(k),
endpoint: Some(v),
});
}
Ok(Some(vec))
}
}
deserializer.deserialize_any(TableOrArray)
}
#[cfg(test)]
mod mirrors_tests {
use crate::RegistrySettings;
static TEST_MIRRORS_ARRAY: &str = include_str!("../tests/data/mirrors-array");
static TEST_MIRRORS_TABLE: &str = include_str!("../tests/data/mirrors-table");
#[test]
fn registry_mirrors_array_representation() {
assert!(toml::from_str::<RegistrySettings>(TEST_MIRRORS_ARRAY).is_ok());
}
#[test]
fn registry_mirrors_table_representation() {
assert!(toml::from_str::<RegistrySettings>(TEST_MIRRORS_TABLE).is_ok());
}
#[test]
fn registry_mirrors_none_representation() {
let registry_settings = toml::from_str::<RegistrySettings>("").unwrap();
assert!(registry_settings.mirrors.is_none());
}
#[test]
fn representation_equal() {
assert_eq!(
toml::from_str::<RegistrySettings>(TEST_MIRRORS_TABLE).unwrap(),
toml::from_str::<RegistrySettings>(TEST_MIRRORS_ARRAY).unwrap()
);
}
}
// This specifies that any non negative i64 integer, -1, and "unlimited"
/// are the valid resource-limits. The hard-limit set to "unlimited" or -1
/// and soft-limit set to "unlimited" or -1 are converted to u64::MAX in
/// the spec file for the container runtime which ultimately represents
/// unlimited for that resource
pub(crate) fn deserialize_limit<'de, D>(deserializer: D) -> Result<i64, D::Error>
where
D: Deserializer<'de>,
{
#[derive(Deserialize)]
#[serde(untagged)]
enum StringOrInt64 {
String(String),
Int(i64),
}
match StringOrInt64::deserialize(deserializer)? {
StringOrInt64::String(s) => {
if s == "unlimited" {
Ok(-1)
} else {
Err(Error::custom(format!(
"Invalid rlimit {}, expected -1 to {} or \"unlimited\"",
s,
i64::MAX
)))
}
}
StringOrInt64::Int(i) => {
if (-1..=i64::MAX).contains(&i) {
Ok(i)
} else {
Err(Error::custom(format!(
"Invalid rlimit {}, expected -1 to {} or \"unlimited\"",
i,
i64::MAX
)))
}
}
}
}
#[cfg(test)]
mod oci_default_resource_limit_tests {
use crate::OciDefaultsResourceLimit;
#[test]
fn valid_any_integer_i_64() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = 200000
soft-limit = 10000
"#
)
.is_ok());
}
#[test]
fn valid_string_unlimited() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = 'unlimited'
soft-limit = 10000
"#
)
.is_ok());
}
#[test]
fn valid_integer_i_64_max() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = 9223372036854775807
soft-limit = 10000
"#
)
.is_ok());
}
#[test]
fn valid_integer_minus_one() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = -1
soft-limit = 10000
"#
)
.is_ok());
}
#[test]
fn invalid_integer_greater_than_i_64_max() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = 9223372036854775808
soft-limit = 10000
"#
)
.is_err());
}
#[test]
fn invalid_minus_2() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = -2
soft-limit = 10000
"#
)
.is_err());
}
#[test]
fn invalid_string_abc() {
assert!(toml::from_str::<OciDefaultsResourceLimit>(
r#"
hard-limit = 'abc'
soft-limit = 10000
"#
)
.is_err());
}
}