01bfbc0dad
JournalEntry, parse_journal, parse_journal_text, parse_header_timestamp, and default_journal_path consolidated into thought/context.rs. Delete the duplicate agent/journal.rs (235 lines). Update all references. Co-Authored-By: Proof of Concept <poc@bcachefs.org>
68 lines
2.3 KiB
Rust
68 lines
2.3 KiB
Rust
// tools/journal.rs — Native journal tool
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//
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// Appends entries directly to the journal file without spawning a
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// shell. The entry is persisted to disk immediately;
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// build_context_window() picks it up on the next compaction.
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//
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// This tool is "ephemeral" — after the API processes the tool call
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// and result, the agent strips them from the conversation history.
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// The journal file is the durable store; keeping the tool call in
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// context would just waste tokens on something already persisted.
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use anyhow::{Context, Result};
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use serde_json::json;
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use super::ToolDef;
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/// Tool name — used by the agent to identify ephemeral tool calls.
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pub const TOOL_NAME: &str = "journal";
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pub fn definition() -> ToolDef {
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ToolDef::new(
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TOOL_NAME,
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"Write a journal entry. The entry is appended to your journal file \
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with an automatic timestamp. Use this for experiences, reflections, \
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observations — anything worth remembering across sessions. \
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This tool has zero context cost: entries are persisted to disk \
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and loaded by the context manager, not kept in conversation history.",
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json!({
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"type": "object",
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"properties": {
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"entry": {
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"type": "string",
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"description": "The journal entry text. Write naturally — \
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experiences, not task logs."
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}
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},
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"required": ["entry"]
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}),
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)
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}
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pub fn write_entry(args: &serde_json::Value) -> Result<String> {
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let entry = args["entry"]
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.as_str()
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.context("entry is required")?;
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let journal_path = crate::thought::context::default_journal_path();
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// Ensure parent directory exists
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if let Some(parent) = journal_path.parent() {
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std::fs::create_dir_all(parent).ok();
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}
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let timestamp = chrono::Utc::now().format("%Y-%m-%dT%H:%M");
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// Append with the same format as poc-journal write
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use std::io::Write;
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let mut file = std::fs::OpenOptions::new()
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.create(true)
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.append(true)
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.open(&journal_path)
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.with_context(|| format!("Failed to open {}", journal_path.display()))?;
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writeln!(file, "\n## {}\n\n{}", timestamp, entry)
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.with_context(|| "Failed to write journal entry")?;
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Ok("Logged.".to_string())
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}
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