From bad54b28bcc59fe5d19ecaf486f52e6359009e68 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 21 May 2024 13:48:43 +0300
Subject: Add support for build_unloaded() notification for tenant-associated
 services

---
 libbrep/build-extra.sql   |  2 ++
 libbrep/build-package.hxx | 15 +++++++++++++--
 libbrep/build.hxx         |  2 +-
 libbrep/build.xml         |  2 ++
 libbrep/package.hxx       | 28 ++++++++++++++++++++++++++--
 libbrep/package.xml       |  9 +++++++++
 6 files changed, 53 insertions(+), 5 deletions(-)

(limited to 'libbrep')

diff --git a/libbrep/build-extra.sql b/libbrep/build-extra.sql
index 9e51a51..c31cc31 100644
--- a/libbrep/build-extra.sql
+++ b/libbrep/build-extra.sql
@@ -46,10 +46,12 @@ CREATE FOREIGN TABLE build_tenant (
   id TEXT NOT NULL,
   private BOOLEAN NOT NULL,
   interactive TEXT NULL,
+  creation_timestamp BIGINT NOT NULL,
   archived BOOLEAN NOT NULL,
   service_id TEXT NULL,
   service_type TEXT NULL,
   service_data TEXT NULL,
+  loaded_timestamp BIGINT NULL,
   queued_timestamp BIGINT NULL,
   toolchain_name TEXT OPTIONS (column_name 'build_toolchain_name') NULL,
   toolchain_version_epoch INTEGER OPTIONS (column_name 'build_toolchain_version_epoch') NULL,
diff --git a/libbrep/build-package.hxx b/libbrep/build-package.hxx
index 9a9c277..2611678 100644
--- a/libbrep/build-package.hxx
+++ b/libbrep/build-package.hxx
@@ -32,12 +32,23 @@ namespace brep
   class build_tenant
   {
   public:
+    // Create tenant for an unloaded CI request (see the build_unloaded()
+    // tenant services notification for details).
+    //
+    build_tenant (string i, tenant_service s, timestamp l)
+        : id (move (i)),
+          creation_timestamp (timestamp::clock::now ()),
+          service (move (s)),
+          loaded_timestamp (l) {}
+
     string id;
 
-    bool private_;
+    bool private_ = false;
     optional<string> interactive;
-    bool archived;
+    timestamp creation_timestamp;
+    bool archived = false;
     optional<tenant_service> service;
+    optional<timestamp> loaded_timestamp;
     optional<timestamp> queued_timestamp;
     optional<build_toolchain> toolchain;
 
diff --git a/libbrep/build.hxx b/libbrep/build.hxx
index af49c03..55fd42b 100644
--- a/libbrep/build.hxx
+++ b/libbrep/build.hxx
@@ -28,7 +28,7 @@
 //
 #define LIBBREP_BUILD_SCHEMA_VERSION_BASE 20
 
-#pragma db model version(LIBBREP_BUILD_SCHEMA_VERSION_BASE, 27, closed)
+#pragma db model version(LIBBREP_BUILD_SCHEMA_VERSION_BASE, 28, closed)
 
 // We have to keep these mappings at the global scope instead of inside the
 // brep namespace because they need to be also effective in the bbot namespace
diff --git a/libbrep/build.xml b/libbrep/build.xml
index 1eba85a..90b4b4f 100644
--- a/libbrep/build.xml
+++ b/libbrep/build.xml
@@ -1,4 +1,6 @@
 <changelog xmlns="http://www.codesynthesis.com/xmlns/odb/changelog" database="pgsql" schema-name="build" version="1">
+  <changeset version="28"/>
+
   <changeset version="27"/>
 
   <changeset version="26"/>
diff --git a/libbrep/package.hxx b/libbrep/package.hxx
index 45008d4..affa2ac 100644
--- a/libbrep/package.hxx
+++ b/libbrep/package.hxx
@@ -20,7 +20,7 @@
 //
 #define LIBBREP_PACKAGE_SCHEMA_VERSION_BASE 27
 
-#pragma db model version(LIBBREP_PACKAGE_SCHEMA_VERSION_BASE, 33, closed)
+#pragma db model version(LIBBREP_PACKAGE_SCHEMA_VERSION_BASE, 34, closed)
 
 namespace brep
 {
@@ -260,11 +260,17 @@ namespace brep
     //
     optional<string> interactive;         // Note: foreign-mapped in build.
 
-    timestamp creation_timestamp;
+    timestamp creation_timestamp;         // Note: foreign-mapped in build.
     bool archived = false;                // Note: foreign-mapped in build.
 
     optional<tenant_service> service;     // Note: foreign-mapped in build.
 
+    // If the tenant is loaded, this value is absent. Otherwise it is the time
+    // of the last attempt to load the tenant (see the build_unloaded() tenant
+    // services notification for details).
+    //
+    optional<timestamp> loaded_timestamp; // Note: foreign-mapped in build.
+
     // Note that due to the implementation complexity and performance
     // considerations, the service notifications are not synchronized. This
     // leads to a potential race, so that before we have sent the `queued`
@@ -318,6 +324,10 @@ namespace brep
 
     #pragma db index member(service.id)
 
+    // Speed-up queries with ordering the result by loaded_timestamp.
+    //
+    #pragma db member(loaded_timestamp) index
+
   private:
     friend class odb::access;
     tenant () = default;
@@ -427,6 +437,20 @@ namespace brep
     repository (): tenant (id.tenant), canonical_name (id.canonical_name) {}
   };
 
+  // Repositories count.
+  //
+  #pragma db view object(repository)
+  struct repository_count
+  {
+    size_t result;
+
+    operator size_t () const {return result;}
+
+    // Database mapping.
+    //
+    #pragma db member(result) column("count(" + repository::id.tenant + ")")
+  };
+
   // The 'to' expression calls the PostgreSQL to_tsvector(weighted_text)
   // function overload (package-extra.sql). Since we are only interested
   // in "write-only" members of this type, make the 'from' expression
diff --git a/libbrep/package.xml b/libbrep/package.xml
index 96e93a7..fe010ad 100644
--- a/libbrep/package.xml
+++ b/libbrep/package.xml
@@ -1,4 +1,13 @@
 <changelog xmlns="http://www.codesynthesis.com/xmlns/odb/changelog" database="pgsql" schema-name="package" version="1">
+  <changeset version="34">
+    <alter-table name="tenant">
+      <add-column name="loaded_timestamp" type="BIGINT" null="true"/>
+      <add-index name="tenant_loaded_timestamp_i">
+        <column name="loaded_timestamp"/>
+      </add-index>
+    </alter-table>
+  </changeset>
+
   <changeset version="33">
     <add-table name="public_key" kind="object">
       <column name="tenant" type="TEXT" null="false"/>
-- 
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