oplog.rs 91.2%

249 of 273 lines run, 42 of 57 functions · run #267 on main · run missed

//! Operation log objects (spec §12.1): every mutation of local repository
//! state records an `Op` whose `view` is the complete set of references and
//! workspaces afterwards.
//!
//! Encoding: `bookmarks` is an array of `[name, state_ref]` sorted by name and
//! `workspaces` an array of `[workspace_id, change_hash]` sorted by id, since
//! canonical maps carry only integer keys. Repository format 1 encoded a
//! bookmark as `[name, [heads]]`; `Op::decode_format1` reads that for migration.

use crate::cbor::{self, Value};
use crate::hash::{hash_object, ChangeHash, ObjectRef, ObjectType};
use crate::ids::WorkspaceId;
use crate::objects::{
    array, bytes, check_version, field, oref, text, Hlc, ObjectError, FORMAT_VERSION,
};
use std::collections::BTreeMap;

#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct View {
    /// Bookmark name → ObjectRef of a `state` object (spec §10.1).
    pub bookmarks: BTreeMap<String, ObjectRef>,
    pub workspaces: BTreeMap<WorkspaceId, ChangeHash>,
    /// `remotes/<remote>/bookmarks/<name>`: remote → bookmark → state ObjectRef.
    pub remotes: BTreeMap<String, BTreeMap<String, ObjectRef>>,
    /// The `policy` reference (spec §10.1, §14.5): ObjectRef of the current policy.
    pub policy: Option<ObjectRef>,
    /// `tags/<name>`: immutable states (spec §10.1).
    pub tags: BTreeMap<String, ObjectRef>,
}

/// A format-1 view, only produced by `Op::decode_format1`.
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct Format1View {
    pub bookmarks: BTreeMap<String, Vec<ChangeHash>>,
    pub workspaces: BTreeMap<WorkspaceId, ChangeHash>,
}

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Op {
    pub parents: Vec<ObjectRef>,
    pub hlc: Hlc,
    pub command: String,
    pub view: View,
}

impl View {
    fn to_value(&self) -> Value {
        Value::map([
            (
                0,
                Value::Array(
                    self.bookmarks
                        .iter()
                        .map(|(n, st)| {
                            Value::Array(vec![Value::Text(n.clone()), Value::Bytes(st.0.to_vec())])
                        })
                        .collect(),
                ),
            ),
            (
                1,
                Value::Array(
                    self.workspaces
                        .iter()
                        .map(|(w, h)| {
                            Value::Array(vec![
                                Value::Bytes(w.0.to_vec()),
                                Value::Bytes(h.0.to_vec()),
                            ])
                        })
                        .collect(),
                ),
            ),
            (
                2,
                Value::Array(
                    self.remotes
                        .iter()
                        .map(|(r, bms)| {
                            Value::Array(vec![
                                Value::Text(r.clone()),
                                Value::Array(
                                    bms.iter()
                                        .map(|(n, st)| {
                                            Value::Array(vec![
                                                Value::Text(n.clone()),
                                                Value::Bytes(st.0.to_vec()),
                                            ])
                                        })
                                        .collect(),
                                ),
                            ])
                        })
                        .collect(),
                ),
            ),
            (
                3,
                self.policy
                    .map(|p| Value::Bytes(p.0.to_vec()))
                    .unwrap_or(Value::Null),
            ),
            (
                4,
                Value::Array(
                    self.tags
                        .iter()
                        .map(|(n, st)| {
                            Value::Array(vec![Value::Text(n.clone()), Value::Bytes(st.0.to_vec())])
                        })
                        .collect(),
                ),
            ),
        ])
    }

    fn from_value(v: &Value) -> Result<View, ObjectError> {
        let m = v
            .as_map()
            .ok_or_else(|| ObjectError::Schema("view: expected map".into()))?;
        let mut view = View::default();
        for b in array(field(m, 0, "bookmarks")?, "bookmarks")? {
            let pair = array(b, "bookmark")?;
            if pair.len() != 2 {
                return Err(ObjectError::Schema(
                    "bookmark: expected [name, heads]".into(),
                ));
            }
            let name = text(&pair[0], "bookmark name")?.to_owned();
            view.bookmarks
                .insert(name, oref(&pair[1], "bookmark state")?);
        }
        view.workspaces = workspaces_from_value(field(m, 1, "workspaces")?)?;
        if let Some(rs) = m.get(&2) {
            for r in array(rs, "remotes")? {
                let pair = array(r, "remote")?;
                if pair.len() != 2 {
                    return Err(ObjectError::Schema(
                        "remote: expected [name, bookmarks]".into(),
                    ));
                }
                let name = text(&pair[0], "remote name")?.to_owned();
                let mut bms = BTreeMap::new();
                for b in array(&pair[1], "remote bookmarks")? {
                    let bp = array(b, "remote bookmark")?;
                    if bp.len() != 2 {
                        return Err(ObjectError::Schema(
                            "remote bookmark: expected [name, state]".into(),
                        ));
                    }
                    bms.insert(
                        text(&bp[0], "bookmark name")?.to_owned(),
                        oref(&bp[1], "bookmark state")?,
                    );
                }
                view.remotes.insert(name, bms);
            }
        }
        if let Some(p) = m.get(&3) {
            view.policy = if p.is_null() {
                None
            } else {
                Some(oref(p, "policy")?)
            };
        }
        if let Some(ts) = m.get(&4) {
            for t in array(ts, "tags")? {
                let pair = array(t, "tag")?;
                if pair.len() != 2 {
                    return Err(ObjectError::Schema("tag: expected [name, state]".into()));
                }
                view.tags.insert(
                    text(&pair[0], "tag name")?.to_owned(),
                    oref(&pair[1], "tag state")?,
                );
            }
        }
        Ok(view)
    }
}

fn workspaces_from_value(v: &Value) -> Result<BTreeMap<WorkspaceId, ChangeHash>, ObjectError> {
    let mut out = BTreeMap::new();
    for w in array(v, "workspaces")? {
        let pair = array(w, "workspace")?;
        if pair.len() != 2 {
            return Err(ObjectError::Schema(
                "workspace: expected [id, change]".into(),
            ));
        }
        let id = WorkspaceId::from_slice(bytes(&pair[0], "workspace id")?)
            .ok_or_else(|| ObjectError::Schema("workspace id: expected 16 bytes".into()))?;
        out.insert(id, oref(&pair[1], "workspace change")?);
    }
    Ok(out)
}

impl Format1View {
    fn from_value(v: &Value) -> Result<Format1View, ObjectError> {
        let m = v
            .as_map()
            .ok_or_else(|| ObjectError::Schema("view: expected map".into()))?;
        let mut view = Format1View::default();
        for b in array(field(m, 0, "bookmarks")?, "bookmarks")? {
            let pair = array(b, "bookmark")?;
            if pair.len() != 2 {
                return Err(ObjectError::Schema(
                    "bookmark: expected [name, heads]".into(),
                ));
            }
            let name = text(&pair[0], "bookmark name")?.to_owned();
            let mut heads = array(&pair[1], "heads")?
                .iter()
                .map(|h| oref(h, "head"))
                .collect::<Result<Vec<_>, _>>()?;
            heads.sort();
            heads.dedup();
            view.bookmarks.insert(name, heads);
        }
        view.workspaces = workspaces_from_value(field(m, 1, "workspaces")?)?;
        Ok(view)
    }

    /// Format-1 encoding, kept for the migration test.
    #[cfg(test)]
    pub(crate) fn to_value(&self) -> Value {
        Value::map([
            (
                0,
                Value::Array(
                    self.bookmarks
                        .iter()
                        .map(|(n, hs)| {
                            Value::Array(vec![
                                Value::Text(n.clone()),
                                Value::Array(
                                    hs.iter().map(|h| Value::Bytes(h.0.to_vec())).collect(),
                                ),
                            ])
                        })
                        .collect(),
                ),
            ),
            (
                1,
                Value::Array(
                    self.workspaces
                        .iter()
                        .map(|(w, h)| {
                            Value::Array(vec![
                                Value::Bytes(w.0.to_vec()),
                                Value::Bytes(h.0.to_vec()),
                            ])
                        })
                        .collect(),
                ),
            ),
        ])
    }
}

/// A format-1 operation as read for migration.
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Format1Op {
    pub parents: Vec<ObjectRef>,
    pub hlc: Hlc,
    pub command: String,
    pub view: Format1View,
}

impl Format1Op {
    #[cfg(test)]
    pub(crate) fn encode(&self) -> Vec<u8> {
        cbor::encode(&Value::map([
            (0, Value::Uint(FORMAT_VERSION)),
            (
                1,
                Value::Array(
                    self.parents
                        .iter()
                        .map(|p| Value::Bytes(p.0.to_vec()))
                        .collect(),
                ),
            ),
            (2, self.hlc.to_value()),
            (3, Value::Text(self.command.clone())),
            (4, self.view.to_value()),
        ]))
    }
}

/// Suffix on the `command` of operations recorded by an automatic
/// working-copy snapshot rather than by a user command.
pub const SNAPSHOT_SUFFIX: &str = " (snapshot)";

impl Op {
    /// Whether this operation only recorded a working-copy snapshot.
    pub fn is_snapshot(&self) -> bool {
        self.command.ends_with(SNAPSHOT_SUFFIX)
    }

    pub fn to_value(&self) -> Value {
        Value::map([
            (0, Value::Uint(FORMAT_VERSION)),
            (
                1,
                Value::Array(
                    self.parents
                        .iter()
                        .map(|p| Value::Bytes(p.0.to_vec()))
                        .collect(),
                ),
            ),
            (2, self.hlc.to_value()),
            (3, Value::Text(self.command.clone())),
            (4, self.view.to_value()),
        ])
    }
    pub fn encode(&self) -> Vec<u8> {
        cbor::encode(&self.to_value())
    }
    pub fn hash(&self) -> ObjectRef {
        hash_object(ObjectType::Op, &self.encode())
    }
    pub fn decode(b: &[u8]) -> Result<Op, ObjectError> {
        let v = cbor::decode(b)?;
        let m = v
            .as_map()
            .ok_or_else(|| ObjectError::Schema("op: expected map".into()))?;
        check_version(m)?;
        Ok(Op {
            parents: array(field(m, 1, "parents")?, "parents")?
                .iter()
                .map(|p| oref(p, "parent"))
                .collect::<Result<Vec<_>, _>>()?,
            hlc: Hlc::from_value(field(m, 2, "hlc")?)?,
            command: text(field(m, 3, "command")?, "command")?.to_owned(),
            view: View::from_value(field(m, 4, "view")?)?,
        })
    }

    /// Read an operation written by repository format 1.
    pub fn decode_format1(b: &[u8]) -> Result<Format1Op, ObjectError> {
        let v = cbor::decode(b)?;
        let m = v
            .as_map()
            .ok_or_else(|| ObjectError::Schema("op: expected map".into()))?;
        check_version(m)?;
        Ok(Format1Op {
            parents: array(field(m, 1, "parents")?, "parents")?
                .iter()
                .map(|p| oref(p, "parent"))
                .collect::<Result<Vec<_>, _>>()?,
            hlc: Hlc::from_value(field(m, 2, "hlc")?)?,
            command: text(field(m, 3, "command")?, "command")?.to_owned(),
            view: Format1View::from_value(field(m, 4, "view")?)?,
        })
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn op_round_trip() {
        let mut view = View::default();
        view.bookmarks.insert("main".into(), ObjectRef([2; 32]));
        view.bookmarks.insert("dev".into(), ObjectRef([3; 32]));
        view.workspaces
            .insert(WorkspaceId([5; 16]), ObjectRef([9; 32]));
        view.remotes
            .entry("origin".into())
            .or_default()
            .insert("main".into(), ObjectRef([4; 32]));
        view.policy = Some(ObjectRef([6; 32]));
        view.tags.insert("v1".into(), ObjectRef([8; 32]));
        let op = Op {
            parents: vec![ObjectRef([7; 32])],
            hlc: Hlc {
                wall_ms: 5,
                logical: 1,
            },
            command: "oxy commit".into(),
            view,
        };
        let d = Op::decode(&op.encode()).unwrap();
        assert_eq!(d, op);
        assert_eq!(d.hash(), Op::decode(&d.encode()).unwrap().hash());
        // A format-1 op does not decode as format 2, but does through the migration reader.
        let mut v1 = Format1View::default();
        v1.bookmarks
            .insert("main".into(), vec![ObjectRef([2; 32]), ObjectRef([1; 32])]);
        v1.workspaces
            .insert(WorkspaceId([5; 16]), ObjectRef([9; 32]));
        let old = Format1Op {
            parents: vec![],
            hlc: Hlc::default(),
            command: "oxy init".into(),
            view: v1,
        };
        assert!(Op::decode(&old.encode()).is_err());
        let back = Op::decode_format1(&old.encode()).unwrap();
        assert_eq!(
            back.view.bookmarks["main"],
            vec![ObjectRef([1; 32]), ObjectRef([2; 32])]
        );
    }
}

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1		//! Operation log objects (spec §12.1): every mutation of local repository
2		//! state records an `Op` whose `view` is the complete set of references and
3		//! workspaces afterwards.
4		//!
5		//! Encoding: `bookmarks` is an array of `[name, state_ref]` sorted by name and
6		//! `workspaces` an array of `[workspace_id, change_hash]` sorted by id, since
7		//! canonical maps carry only integer keys. Repository format 1 encoded a
8		//! bookmark as `[name, [heads]]`; `Op::decode_format1` reads that for migration.
9
10		use crate::cbor::{self, Value};
11		use crate::hash::{hash_object, ChangeHash, ObjectRef, ObjectType};
12		use crate::ids::WorkspaceId;
13		use crate::objects::{
14		array, bytes, check_version, field, oref, text, Hlc, ObjectError, FORMAT_VERSION,
15		};
16		use std::collections::BTreeMap;
17
18		#[derive(Clone, Debug, Default, PartialEq, Eq)]
19		pub struct View {
20		/// Bookmark name → ObjectRef of a `state` object (spec §10.1).
21		pub bookmarks: BTreeMap<String, ObjectRef>,
22		pub workspaces: BTreeMap<WorkspaceId, ChangeHash>,
23		/// `remotes/<remote>/bookmarks/<name>`: remote → bookmark → state ObjectRef.
24		pub remotes: BTreeMap<String, BTreeMap<String, ObjectRef>>,
25		/// The `policy` reference (spec §10.1, §14.5): ObjectRef of the current policy.
26		pub policy: Option<ObjectRef>,
27		/// `tags/<name>`: immutable states (spec §10.1).
28		pub tags: BTreeMap<String, ObjectRef>,
29		}
30
31		/// A format-1 view, only produced by `Op::decode_format1`.
32		#[derive(Clone, Debug, Default, PartialEq, Eq)]
33		pub struct Format1View {
34		pub bookmarks: BTreeMap<String, Vec<ChangeHash>>,
35		pub workspaces: BTreeMap<WorkspaceId, ChangeHash>,
36		}
37
38		#[derive(Clone, Debug, PartialEq, Eq)]
39		pub struct Op {
40		pub parents: Vec<ObjectRef>,
41		pub hlc: Hlc,
42		pub command: String,
43		pub view: View,
44		}
45
46		impl View {
47	3242×	fn to_value(&self) -> Value {
48	3242×	Value::map([
49		(
50		0,
51		Value::Array(
52	3242×	self.bookmarks
53	3242×	.iter()
54	3430×	.map(\|(n, st)\| {
55	3430×	Value::Array(vec![Value::Text(n.clone()), Value::Bytes(st.0.to_vec())])
56	3430×	})
57	3242×	.collect(),
58		),
59		),
60		(
61		1,
62		Value::Array(
63	3242×	self.workspaces
64	3242×	.iter()
65	3242×	.map(\|(w, h)\| {
66	3174×	Value::Array(vec![
67	3174×	Value::Bytes(w.0.to_vec()),
68	3174×	Value::Bytes(h.0.to_vec()),
69	3174×	])
70	3174×	})
71	3242×	.collect(),
72		),
73		),
74		(
75		2,
76		Value::Array(
77	3242×	self.remotes
78	3242×	.iter()
79	3242×	.map(\|(r, bms)\| {
80	1840×	Value::Array(vec![
81	1840×	Value::Text(r.clone()),
82		Value::Array(
83	1840×	bms.iter()
84	1886×	.map(\|(n, st)\| {
85	1886×	Value::Array(vec![
86	1886×	Value::Text(n.clone()),
87	1886×	Value::Bytes(st.0.to_vec()),
88	1886×	])
89	1886×	})
90	1840×	.collect(),
91		),
92		])
93	1840×	})
94	3242×	.collect(),
95		),
96		),
97		(
98		3,
99	3242×	self.policy
100	3242×	.map(\|p\| Value::Bytes(p.0.to_vec()))
101	3242×	.unwrap_or(Value::Null),
102		),
103		(
104		4,
105		Value::Array(
106	3242×	self.tags
107	3242×	.iter()
108	3242×	.map(\|(n, st)\| {
109	94×	Value::Array(vec![Value::Text(n.clone()), Value::Bytes(st.0.to_vec())])
110	94×	})
111	3242×	.collect(),
112		),
113		),
114		])
115	3242×	}
116
117	17178×	fn from_value(v: &Value) -> Result<View, ObjectError> {
118	17178×	let m = v
119	17178×	.as_map()
120	17178×	.ok_or_else(\|\| ObjectError::Schema("view: expected map".into()))?;
121	17178×	let mut view = View::default();
122	18122×	for b in array(field(m, 0, "bookmarks")?, "bookmarks")? {
123	18122×	let pair = array(b, "bookmark")?;
124	18122×	if pair.len() != 2 {
125	0×	return Err(ObjectError::Schema(
126	0×	"bookmark: expected [name, heads]".into(),
127	0×	));
128	18122×	}
129	18122×	let name = text(&pair[0], "bookmark name")?.to_owned();
130	18122×	view.bookmarks
131	18122×	.insert(name, oref(&pair[1], "bookmark state")?);
132		}
133	17177×	view.workspaces = workspaces_from_value(field(m, 1, "workspaces")?)?;
134	17177×	if let Some(rs) = m.get(&2) {
135	17177×	for r in array(rs, "remotes")? {
136	7429×	let pair = array(r, "remote")?;
137	7429×	if pair.len() != 2 {
138	0×	return Err(ObjectError::Schema(
139	0×	"remote: expected [name, bookmarks]".into(),
140	0×	));
141	7429×	}
142	7429×	let name = text(&pair[0], "remote name")?.to_owned();
143	7429×	let mut bms = BTreeMap::new();
144	7591×	for b in array(&pair[1], "remote bookmarks")? {
145	7591×	let bp = array(b, "remote bookmark")?;
146	7591×	if bp.len() != 2 {
147	0×	return Err(ObjectError::Schema(
148	0×	"remote bookmark: expected [name, state]".into(),
149	0×	));
150	7591×	}
151	7591×	bms.insert(
152	7591×	text(&bp[0], "bookmark name")?.to_owned(),
153	7591×	oref(&bp[1], "bookmark state")?,
154		);
155		}
156	7429×	view.remotes.insert(name, bms);
157		}
158	0×	}
159	17177×	if let Some(p) = m.get(&3) {
160	17177×	view.policy = if p.is_null() {
161	16519×	None
162		} else {
163	658×	Some(oref(p, "policy")?)
164		};
165	0×	}
166	17177×	if let Some(ts) = m.get(&4) {
167	17177×	for t in array(ts, "tags")? {
168	565×	let pair = array(t, "tag")?;
169	565×	if pair.len() != 2 {
170	0×	return Err(ObjectError::Schema("tag: expected [name, state]".into()));
171	565×	}
172	565×	view.tags.insert(
173	565×	text(&pair[0], "tag name")?.to_owned(),
174	565×	oref(&pair[1], "tag state")?,
175		);
176		}
177	0×	}
178	17177×	Ok(view)
179	17178×	}
180		}
181
182	17180×	fn workspaces_from_value(v: &Value) -> Result<BTreeMap<WorkspaceId, ChangeHash>, ObjectError> {
183	17180×	let mut out = BTreeMap::new();
184	17180×	for w in array(v, "workspaces")? {
185	16496×	let pair = array(w, "workspace")?;
186	16496×	if pair.len() != 2 {
187	0×	return Err(ObjectError::Schema(
188	0×	"workspace: expected [id, change]".into(),
189	0×	));
190	16496×	}
191	16496×	let id = WorkspaceId::from_slice(bytes(&pair[0], "workspace id")?)
192	16496×	.ok_or_else(\|\| ObjectError::Schema("workspace id: expected 16 bytes".into()))?;
193	16496×	out.insert(id, oref(&pair[1], "workspace change")?);
194		}
195	17180×	Ok(out)
196	17180×	}
197
198		impl Format1View {
199	3×	fn from_value(v: &Value) -> Result<Format1View, ObjectError> {
200	3×	let m = v
201	3×	.as_map()
202	3×	.ok_or_else(\|\| ObjectError::Schema("view: expected map".into()))?;
203	3×	let mut view = Format1View::default();
204	3×	for b in array(field(m, 0, "bookmarks")?, "bookmarks")? {
205	3×	let pair = array(b, "bookmark")?;
206	3×	if pair.len() != 2 {
207	0×	return Err(ObjectError::Schema(
208	0×	"bookmark: expected [name, heads]".into(),
209	0×	));
210	3×	}
211	3×	let name = text(&pair[0], "bookmark name")?.to_owned();
212	3×	let mut heads = array(&pair[1], "heads")?
213	3×	.iter()
214	3×	.map(\|h\| oref(h, "head"))
215	3×	.collect::<Result<Vec<_>, _>>()?;
216	3×	heads.sort();
217	3×	heads.dedup();
218	3×	view.bookmarks.insert(name, heads);
219		}
220	3×	view.workspaces = workspaces_from_value(field(m, 1, "workspaces")?)?;
221	3×	Ok(view)
222	3×	}
223
224		/// Format-1 encoding, kept for the migration test.
225		#[cfg(test)]
226	4×	pub(crate) fn to_value(&self) -> Value {
227	4×	Value::map([
228		(
229		0,
230		Value::Array(
231	4×	self.bookmarks
232	4×	.iter()
233	4×	.map(\|(n, hs)\| {
234	4×	Value::Array(vec![
235	4×	Value::Text(n.clone()),
236		Value::Array(
237	5×	hs.iter().map(\|h\| Value::Bytes(h.0.to_vec())).collect(),
238		),
239		])
240	4×	})
241	4×	.collect(),
242		),
243		),
244		(
245		1,
246		Value::Array(
247	4×	self.workspaces
248	4×	.iter()
249	4×	.map(\|(w, h)\| {
250	4×	Value::Array(vec![
251	4×	Value::Bytes(w.0.to_vec()),
252	4×	Value::Bytes(h.0.to_vec()),
253	4×	])
254	4×	})
255	4×	.collect(),
256		),
257		),
258		])
259	4×	}
260		}
261
262		/// A format-1 operation as read for migration.
263		#[derive(Clone, Debug, PartialEq, Eq)]
264		pub struct Format1Op {
265		pub parents: Vec<ObjectRef>,
266		pub hlc: Hlc,
267		pub command: String,
268		pub view: Format1View,
269		}
270
271		impl Format1Op {
272		#[cfg(test)]
273	4×	pub(crate) fn encode(&self) -> Vec<u8> {
274	4×	cbor::encode(&Value::map([
275	4×	(0, Value::Uint(FORMAT_VERSION)),
276		(
277		1,
278		Value::Array(
279	4×	self.parents
280	4×	.iter()
281	4×	.map(\|p\| Value::Bytes(p.0.to_vec()))
282	4×	.collect(),
283		),
284		),
285	4×	(2, self.hlc.to_value()),
286	4×	(3, Value::Text(self.command.clone())),
287	4×	(4, self.view.to_value()),
288		]))
289	4×	}
290		}
291
292		/// Suffix on the `command` of operations recorded by an automatic
293		/// working-copy snapshot rather than by a user command.
294		pub const SNAPSHOT_SUFFIX: &str = " (snapshot)";
295
296		impl Op {
297		/// Whether this operation only recorded a working-copy snapshot.
298	35×	pub fn is_snapshot(&self) -> bool {
299	35×	self.command.ends_with(SNAPSHOT_SUFFIX)
300	35×	}
301
302	3242×	pub fn to_value(&self) -> Value {
303	3242×	Value::map([
304	3242×	(0, Value::Uint(FORMAT_VERSION)),
305		(
306		1,
307		Value::Array(
308	3242×	self.parents
309	3242×	.iter()
310	3242×	.map(\|p\| Value::Bytes(p.0.to_vec()))
311	3242×	.collect(),
312		),
313		),
314	3242×	(2, self.hlc.to_value()),
315	3242×	(3, Value::Text(self.command.clone())),
316	3242×	(4, self.view.to_value()),
317		])
318	3242×	}
319	3242×	pub fn encode(&self) -> Vec<u8> {
320	3242×	cbor::encode(&self.to_value())
321	3242×	}
322	2×	pub fn hash(&self) -> ObjectRef {
323	2×	hash_object(ObjectType::Op, &self.encode())
324	2×	}
325	17178×	pub fn decode(b: &[u8]) -> Result<Op, ObjectError> {
326	17178×	let v = cbor::decode(b)?;
327	17178×	let m = v
328	17178×	.as_map()
329	17178×	.ok_or_else(\|\| ObjectError::Schema("op: expected map".into()))?;
330	17178×	check_version(m)?;
331		Ok(Op {
332	17178×	parents: array(field(m, 1, "parents")?, "parents")?
333	17178×	.iter()
334	17178×	.map(\|p\| oref(p, "parent"))
335	17178×	.collect::<Result<Vec<_>, _>>()?,
336	17178×	hlc: Hlc::from_value(field(m, 2, "hlc")?)?,
337	17178×	command: text(field(m, 3, "command")?, "command")?.to_owned(),
338	17178×	view: View::from_value(field(m, 4, "view")?)?,
339		})
340	17178×	}
341
342		/// Read an operation written by repository format 1.
343	3×	pub fn decode_format1(b: &[u8]) -> Result<Format1Op, ObjectError> {
344	3×	let v = cbor::decode(b)?;
345	3×	let m = v
346	3×	.as_map()
347	3×	.ok_or_else(\|\| ObjectError::Schema("op: expected map".into()))?;
348	3×	check_version(m)?;
349		Ok(Format1Op {
350	3×	parents: array(field(m, 1, "parents")?, "parents")?
351	3×	.iter()
352	3×	.map(\|p\| oref(p, "parent"))
353	3×	.collect::<Result<Vec<_>, _>>()?,
354	3×	hlc: Hlc::from_value(field(m, 2, "hlc")?)?,
355	3×	command: text(field(m, 3, "command")?, "command")?.to_owned(),
356	3×	view: Format1View::from_value(field(m, 4, "view")?)?,
357		})
358	3×	}
359		}
360
361		#[cfg(test)]
362		mod tests {
363		use super::*;
364
365		#[test]
366	1×	fn op_round_trip() {
367	1×	let mut view = View::default();
368	1×	view.bookmarks.insert("main".into(), ObjectRef([2; 32]));
369	1×	view.bookmarks.insert("dev".into(), ObjectRef([3; 32]));
370	1×	view.workspaces
371	1×	.insert(WorkspaceId([5; 16]), ObjectRef([9; 32]));
372	1×	view.remotes
373	1×	.entry("origin".into())
374	1×	.or_default()
375	1×	.insert("main".into(), ObjectRef([4; 32]));
376	1×	view.policy = Some(ObjectRef([6; 32]));
377	1×	view.tags.insert("v1".into(), ObjectRef([8; 32]));
378	1×	let op = Op {
379	1×	parents: vec![ObjectRef([7; 32])],
380	1×	hlc: Hlc {
381	1×	wall_ms: 5,
382	1×	logical: 1,
383	1×	},
384	1×	command: "oxy commit".into(),
385	1×	view,
386	1×	};
387	1×	let d = Op::decode(&op.encode()).unwrap();
388	1×	assert_eq!(d, op);
389	1×	assert_eq!(d.hash(), Op::decode(&d.encode()).unwrap().hash());
390		// A format-1 op does not decode as format 2, but does through the migration reader.
391	1×	let mut v1 = Format1View::default();
392	1×	v1.bookmarks
393	1×	.insert("main".into(), vec![ObjectRef([2; 32]), ObjectRef([1; 32])]);
394	1×	v1.workspaces
395	1×	.insert(WorkspaceId([5; 16]), ObjectRef([9; 32]));
396	1×	let old = Format1Op {
397	1×	parents: vec![],
398	1×	hlc: Hlc::default(),
399	1×	command: "oxy init".into(),
400	1×	view: v1,
401	1×	};
402	1×	assert!(Op::decode(&old.encode()).is_err());
403	1×	let back = Op::decode_format1(&old.encode()).unwrap();
404	1×	assert_eq!(
405	1×	back.view.bookmarks["main"],
406	1×	vec![ObjectRef([1; 32]), ObjectRef([2; 32])]
407		);
408	1×	}
409		}

Coverage / crates/oxy-core/src/oplog.rs 91.2%

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