add the replace kind of remake

POST /admin/remakes accepts specs with replace kind, e.g.:

  { "kind": "replace",
    "baseHeads": ["..."],
    "spec": {
      "document": { "accounts": { ... } },
      "rules": [
        { "from": "users",       "to": "accounts" },
        { "from": "users/admin", "drop": true },
        { "from": "",            "to": "" }
      ] } }

1 files changed, 11 insertions, 1 deletions

diff --git a/src/remake/api.rs b/src/remake/api.rs
index b473a2d..7db7acb 100644
--- a/src/remake/api.rs
+++ b/src/remake/api.rs
@@ -20,6 +20,10 @@
 //!    "replayWindow": {"epochs": 1, "seconds": 604800},
 //!    "archiveRetention": {"epochs": 2, "seconds": 2592000},
 //!    "settleSecs": 480 }`
+//!
+//! `kind` is `compact` (no spec) or `replace`, whose spec is
+//! `{ "document": {…store root…}, "rules": [{"from": "a", "to": "b"}, {"from": "c", "drop": true}] }`
+//! (see `kind::Replace`). Reports leave the replacement document out (`contentBytes`).
 
 use std::time::Duration;
 
@@ -83,6 +87,10 @@ struct Report {
     phase: Phase,
     #[serde(flatten)]
     record: Record,
+    /// Size of the kind's build input (e.g. a replacement document), which reports
+    /// leave out.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    content_bytes: Option<usize>,
     /// What happened to this remake on the node answering the request.
     #[serde(skip_serializing_if = "Option::is_none")]
     local: Option<LocalStatus>,
@@ -114,10 +122,12 @@ fn grace<H: Host>(host: &H) -> u64 {
     host.dormant_after().as_millis() as u64
 }
 
-fn report<H: Host>(host: &H, id: String, record: Record) -> Report {
+fn report<H: Host>(host: &H, id: String, mut record: Record) -> Report {
+    let content = std::mem::take(&mut record.proposal.content);
     Report {
         phase: record.phase(unix_millis(), grace(host)),
         local: host.remake().status(&id),
+        content_bytes: (!content.is_null()).then(|| content.to_string().len()),
         id,
         record,
     }