Fix MS Exchange duplicate ids issue

src/sync/import_exchange_graph/calendar.rs

@@ -33,6 +33,7 @@ pub fn reconcile_all(
     let local: HashMap<String, i64> =
         exchange_graph_ids::ids_of_type(conn, ctx.source_id, exchange_graph_ids::CALENDAR_EVENT)?;
     let mut server_total: std::collections::HashSet<String> = std::collections::HashSet::new();
+    let mut planned: std::collections::HashSet<String> = std::collections::HashSet::new();
     let mut any_failure = false;
 
     for cal in calendars {
@@ -55,7 +56,7 @@ pub fn reconcile_all(
                 _ => {
                     if let Some(id) = stub.get("id").and_then(Value::as_str) {
                         server_total.insert(id.to_owned());
-                        if !local.contains_key(id) {
+                        if !local.contains_key(id) && planned.insert(id.to_owned()) {
                             want_ids.push(id.to_owned());
                         }
                     }

src/sync/import_exchange_graph/contacts.rs

@@ -30,6 +30,7 @@ pub fn reconcile_all(
     let local: HashMap<String, i64> =
         exchange_graph_ids::ids_of_type(conn, ctx.source_id, exchange_graph_ids::CONTACT_CARD)?;
     let mut server_total: std::collections::HashSet<String> = std::collections::HashSet::new();
+    let mut planned: std::collections::HashSet<String> = std::collections::HashSet::new();
     let mut any_failure = false;
 
     for book in books {
@@ -60,7 +61,7 @@ pub fn reconcile_all(
         }
         let new_ids: Vec<String> = ids
             .into_iter()
-            .filter(|id| !local.contains_key(id))
+            .filter(|id| !local.contains_key(id) && planned.insert(id.clone()))
             .collect();
         if new_ids.is_empty() {
             continue;

src/sync/import_exchange_graph/messages.rs

@@ -30,6 +30,7 @@ pub fn reconcile_all(
     let local: std::collections::HashMap<String, i64> =
         exchange_graph_ids::ids_of_type(conn, ctx.source_id, exchange_graph_ids::EMAIL)?;
     let mut server_total: std::collections::HashSet<String> = std::collections::HashSet::new();
+    let mut planned: std::collections::HashSet<String> = std::collections::HashSet::new();
     let mut any_failure = false;
 
     for folder in folders {
@@ -58,7 +59,7 @@ pub fn reconcile_all(
         }
         let new_ids: Vec<String> = ids
             .into_iter()
-            .filter(|id| !local.contains_key(id))
+            .filter(|id| !local.contains_key(id) && planned.insert(id.clone()))
             .collect();
         if new_ids.is_empty() {
             continue;