show last checked time on resource page

db/migration/migrations/1513895878_update_timestamp_with_timezone.down.sql

@@ -0,0 +1,33 @@
+BEGIN;
+    ALTER TABLE build_inputs
+      ALTER COLUMN modified_time TYPE timestamp without time zone;
+
+    ALTER TABLE build_outputs
+      ALTER COLUMN modified_time TYPE timestamp without time zone;
+
+    ALTER TABLE cache_invalidator
+      ALTER COLUMN last_invalidated TYPE timestamp without time zone;
+    ALTER TABLE cache_invalidator
+      ALTER COLUMN last_invalidated SET DEFAULT '1970-01-01 00:00:00'::timestamp without time zone;
+
+    ALTER TABLE containers
+      ALTER COLUMN best_if_used_by TYPE timestamp without time zone;
+
+    ALTER TABLE pipelines
+      ALTER COLUMN last_scheduled TYPE timestamp without time zone;
+    ALTER TABLE pipelines
+      ALTER COLUMN last_scheduled SET DEFAULT '1970-01-01 00:00:00'::timestamp without time zone;
+
+    ALTER TABLE resource_types
+      ALTER COLUMN last_checked TYPE timestamp without time zone;
+    ALTER TABLE resource_types
+      ALTER COLUMN last_checked SET DEFAULT '1970-01-01 00:00:00'::timestamp without time zone;
+
+    ALTER TABLE resources
+      ALTER COLUMN last_checked TYPE timestamp without time zone;
+    ALTER TABLE resources
+      ALTER COLUMN last_checked SET DEFAULT '1970-01-01 00:00:00'::timestamp without time zone;
+
+    ALTER TABLE versioned_resources
+      ALTER COLUMN modified_time TYPE timestamp without time zone;
+COMMIT;

db/migration/migrations/1513895878_update_timestamp_with_timezone.up.sql

@@ -0,0 +1,36 @@
+BEGIN;
+    ALTER TABLE build_inputs
+      ALTER COLUMN modified_time TYPE timestamp with time zone;
+
+    ALTER TABLE build_outputs
+      ALTER COLUMN modified_time TYPE timestamp with time zone;
+
+    ALTER TABLE cache_invalidator
+      ALTER COLUMN last_invalidated TYPE timestamp with time zone;
+    ALTER TABLE cache_invalidator
+      ALTER COLUMN last_invalidated SET DEFAULT '1970-01-01 00:00:00'::timestamp with time zone;
+
+    ALTER TABLE containers
+      ALTER COLUMN best_if_used_by TYPE timestamp with time zone;
+
+    ALTER TABLE pipelines
+      ALTER COLUMN last_scheduled TYPE timestamp with time zone;
+    ALTER TABLE pipelines
+      ALTER COLUMN last_scheduled SET DEFAULT '1970-01-01 00:00:00'::timestamp with time zone;
+
+    ALTER TABLE resource_types
+      ALTER COLUMN last_checked TYPE timestamp with time zone;
+    ALTER TABLE resource_types
+      ALTER COLUMN last_checked SET DEFAULT '1970-01-01 00:00:00'::timestamp with time zone;
+
+    ALTER TABLE resources
+      ALTER COLUMN last_checked TYPE timestamp with time zone;
+    ALTER TABLE resources
+      ALTER COLUMN last_checked DROP DEFAULT;
+    ALTER TABLE resources
+      ALTER COLUMN last_checked DROP NOT NULL;
+
+    ALTER TABLE versioned_resources
+      ALTER COLUMN modified_time TYPE timestamp with time zone;
+COMMIT;
+

db/pipeline_locks.go

@@ -140,7 +140,7 @@ func (p *pipeline) checkIfResourceIntervalUpdated(
 
 	condition := ""
 	if !immediate {
-		condition = "AND now() - last_checked > ($3 || ' SECONDS')::INTERVAL"
+		condition = "AND (now() - last_checked > ($3 || ' SECONDS')::INTERVAL OR last_checked IS NULL)"
 		params = append(params, interval.Seconds())
 	}
 

db/resource.go

@@ -9,6 +9,7 @@ import (
 
 	sq "github.com/Masterminds/squirrel"
 	"github.com/concourse/atc"
+	"github.com/lib/pq"
 )
 
 //go:generate counterfeiter . Resource
@@ -168,13 +169,16 @@ func scanResource(r *resource, row scannable) error {
 	var (
 		configBlob      []byte
 		checkErr, nonce sql.NullString
+		lastChecked     pq.NullTime
 	)
 
-	err := row.Scan(&r.id, &r.name, &configBlob, &checkErr, &r.paused, &r.lastChecked, &r.pipelineID, &r.pipelineName, &nonce)
+	err := row.Scan(&r.id, &r.name, &configBlob, &checkErr, &r.paused, &lastChecked, &r.pipelineID, &r.pipelineName, &nonce)
 	if err != nil {
 		return err
 	}
 
+	r.lastChecked = lastChecked.Time
+
 	es := r.conn.EncryptionStrategy()
 
 	var noncense *string

web/assets/css/production.less

@@ -19,6 +19,11 @@
   margin: 6px 0px 6px 24px;
 }
 
+.pagination-header .last-checked {
+  float: left;
+  margin-left: 24px;
+}
+
 .build-action {
   background: transparent;
   border: none;