Struct InlineChain 

pub struct InlineChain { /* private fields */ }

One trace.jsonl’s chain, shared by every appender holding the same file.

Every append locks the state, takes the file’s flock, re-reads the real last line when the file’s length is not what this state last wrote (another process appended, or this is the first write), terminates a torn last line, and writes its line with "prev_hash" in one write_all.

Implementations

impl InlineChain

pub fn open(root: &WorkdirRoot, rel: &str) -> Result<Arc<Self>>

The chain of rel in root, opened for appending without following a link, and shared with every other holder of the same file in this process.

pub fn append_event(&self, event: &impl Serialize) -> Result<()>

Appends event as one line ending in "prev_hash".

pub fn append_json(&self, json: &str) -> Result<()>

Appends one serialized JSON object as one line ending in "prev_hash".

pub fn head(&self) -> Result<ChainHead>

The head and line count as the file holds them now.

Trait Implementations

impl Debug for InlineChain

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

Formats the value using the given formatter.