"encoding/json"
"errors"
"fmt"
+ "log"
"os"
"path/filepath"
"strings"
)
// openMemory opens the chat in root and starts the builds that are ready. The
-// clock gives the dates of new messages and the days of new nodes. The builds
-// stop when ctx ends or at Close.
-func openMemory(ctx context.Context, root string, clock func() time.Time, summarizer Summarizer) (*Memory, error) {
+// clock gives the dates of new messages and the days of new nodes. logger gets
+// one line for each failed build. The builds stop when ctx ends or at Close.
+func openMemory(ctx context.Context, root string, clock func() time.Time, summarizer Summarizer, logger *log.Logger) (*Memory, error) {
log, err := openLog(ctx, root, clock)
if err != nil {
return nil, err
log: log,
queue: newBuildQueue(),
summarizer: summarizer,
+ logger: logger,
changed: make(chan struct{}),
}
cview *View
queue *BuildQueue
summarizer Summarizer
+ logger *log.Logger
ctx context.Context
cancel context.CancelFunc
workers sync.WaitGroup
task, err := m.task(key)
if err != nil {
+ m.failed(key, fmt.Errorf("read its input: %w", err))
m.queue.Fail(key)
+
continue
}
m.syncer.Written()
}
+ if err != nil && m.ctx.Err() == nil {
+ m.failed(key, err)
+ }
+
if err != nil {
m.queue.Fail(key)
} else {
m.dispatch()
}
+// failed logs the failed build of the node key with its cause err.
+func (m *Memory) failed(key NodeKey, err error) {
+ m.logger.Printf("summary failed, retry at next message: node (%d, %d): %v", key.level, key.index, err)
+}
+
// ready tells if both children of the node key are built and the node is not.
func (m *Memory) ready(key NodeKey) (bool, error) {
for _, index := range []int{2 * key.index, 2*key.index + 1} {