Struct NrsMap

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pub struct NrsMap {
    pub map: BTreeMap<String, SafeUrl>,
}
Expand description

An NRS map is a description of a registered topname and all subnames associated with that.

Each subname will link to some content, e.g., a FilesContainer, and the topname can also optionally link to something.

The struct is stored on the network using a Multimap. The entries are public name -> SafeUrl mappings.

PublicName KeyFull NameSafeUrl Value
“example”“example”“safe://example”
“sub.example”“sub.example”“safe://sub.example”
“sub.sub.example”“sub.sub.example”“safe://sub.sub.example”

The map also has a subname version field that optionally specifies a subname at a particular version, since it’s possible to have multiple entries for a given subname. If no version was requested when the map is retrieved, it will be set to None.

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§map: BTreeMap<String, SafeUrl>

Implementations§

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impl NrsMap

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pub fn get(&self, public_name: &str) -> Result<Option<SafeUrl>>

Get the SafeUrl associated with the given public name.

There are 3 possible inputs for public_name:

  • The topname, e.g., “example”.
  • A subname with a topname, e.g. “a.example”.
  • An XorUrl string.

The calling nrs_get function would have already returned if it couldn’t find, say, “example2”.

If public_name isn’t in the map, we then check to see if it contains subnames, in which case, we return a ContentError. If it doesn’t, we return None. At this point, either the topname has no link associated, or we have an XorUrl string. In both cases, the resolver is going to return the NrsMapContainer content.

We’re doing this because we want to return no target link if the address of the container has been passed to nrs_get.

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pub fn get_map_summary(&self) -> Vec<(String, String)>

Prints a summary for the NRS map.

This is used in the CLI for printing out the details of a map.

It sorts by the length of the subname, so you’d end up with something like this:

  • example
  • a.example
  • a.b.example
  • subname.example

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impl Clone for NrsMap

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fn clone(&self) -> NrsMap

Returns a duplicate of the value. Read more
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const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for NrsMap

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for NrsMap

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fn default() -> NrsMap

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for NrsMap

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for NrsMap

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fn eq(&self, other: &NrsMap) -> bool

Tests for self and other values to be equal, and is used by ==.
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const fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for NrsMap

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Eq for NrsMap

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impl StructuralPartialEq for NrsMap

Auto Trait Implementations§

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impl Freeze for NrsMap

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impl RefUnwindSafe for NrsMap

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impl Send for NrsMap

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impl Sync for NrsMap

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impl Unpin for NrsMap

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impl UnwindSafe for NrsMap

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