Struct ClaimView 

pub struct ClaimView {
    pub key: String,
    pub stream: StreamId,
    pub runtime: String,
    pub session: String,
    pub scope: Vec<String>,
    pub intent: Option<String>,
    pub mode: ClaimMode,
    pub issue: Option<String>,
    pub acquired_lamport: u64,
    pub acquired_seq: u64,
    pub state: ClaimState,
}

One claim anywhere in the mesh: who took what, for what, and where it stands. The acquisition’s Lamport stamp and sequence are carried rather than derived on demand, because they are what exclusivity is decided by — every runtime ranks two competing claims by the same triple and so names the same winner, with no message passing and no “last packet wins”.

use std::sync::Arc;
use majordomus_cli::mesh::identity::NodeIdentity;
use majordomus_cli::mesh::journal::{ClaimMode, EventBody, Journal, StreamLiveness};
use majordomus_cli::mesh::state::{fold, ClaimState, ClaimView};

let j = Journal::open(Arc::new(NodeIdentity::ephemeral().unwrap()), "0000000000000001",
    "repo".into(), None).unwrap();
j.append_own(EventBody::ClaimAcquired { claim: "c1".into(), session: "s1".into(),
    scope: vec!["apps/majordomus-cli".into()], intent: Some("document the mesh".into()),
    mode: ClaimMode::Exclusive, issue: Some("#184".into()) }).unwrap();

let state = fold(&j.events(), &|_| StreamLiveness::Own);
let claim: &ClaimView = &state.claims[0];
assert_eq!(claim.scope, ["apps/majordomus-cli"]);
assert_eq!(claim.state, ClaimState::Held);
assert!(claim.acquired_lamport > 0, "the order exclusivity is decided in");

Fields

key: String

<stream>/<claim>.

stream: StreamId

The writing stream.

runtime: String

<node>-<runtime>.

session: String

The holding session’s key.

scope: Vec<String>

The claimed paths.

intent: Option<String>

What it is for.

mode: ClaimMode

Exclusive or advisory.

issue: Option<String>

The issue it is for.

acquired_lamport: u64

The Lamport stamp of the acquisition.

acquired_seq: u64

The sequence of the acquisition within its stream: with the stamp and the stream, the total order in which exclusivity is decided.

state: ClaimState

Its standing.

Trait Implementations

impl Clone for ClaimView

fn clone(&self) -> ClaimView

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ClaimView

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ClaimView

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ClaimView

impl JsonSchema for ClaimView

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for ClaimView

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl Serialize for ClaimView

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ClaimView