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Events and logs

As dbt runs, it generates events. The most common way to see those events is as log messages, written in real time to two places:

  • The command line terminal (stdout), to provide interactive feedback while running dbt.
  • The debug log file (logs/dbt.log), to enable detailed debugging of errors when they occur. The text-formatted log messages in this file include all DEBUG-level events, as well as contextual information, such as log level and thread name. The location of this file can be configured via the log_path config.
CLI
21:35:48  6 of 7 OK created view model dbt_testing.name_list......................... [CREATE VIEW in 0.17s]
logs/dbt.log
============================== 21:21:15.272780 | 48cef052-3819-4550-a83a-4a648aef5a31 ==============================
21:21:15.272780 [info ] [MainThread]: Running with dbt=1.5.0-b5
21:21:15.273802 [debug] [MainThread]: running dbt with arguments {'printer_width': '80', 'indirect_selection': 'eager', 'log_cache_events': 'False', 'write_json': 'True', 'partial_parse': 'True', 'cache_selected_only': 'False', 'warn_error': 'None', 'fail_fast': 'False', 'debug': 'False', 'log_path': '/Users/jerco/dev/scratch/testy/logs', 'profiles_dir': '/Users/jerco/.dbt', 'version_check': 'False', 'use_colors': 'False', 'use_experimental_parser': 'False', 'no_print': 'None', 'quiet': 'False', 'log_format': 'default', 'static_parser': 'True', 'introspect': 'True', 'warn_error_options': 'WarnErrorOptions(include=[], exclude=[])', 'target_path': 'None', 'send_anonymous_usage_stats': 'True'}
21:21:16.190990 [debug] [MainThread]: Partial parsing enabled: 0 files deleted, 0 files added, 0 files changed.
21:21:16.191404 [debug] [MainThread]: Partial parsing enabled, no changes found, skipping parsing
21:21:16.207330 [info ] [MainThread]: Found 2 models, 0 tests, 0 snapshots, 1 analysis, 535 macros, 0 operations, 1 seed file, 0 sources, 0 exposures, 0 metrics, 0 groups

Structured logging​

For more details about how the eventing system has been implemented in dbt-core, see the events module README.

Python interface​

danger

The EVENT_HISTORY object has been deprecated and removed in dbt Core v1.4+

Older versions of dbt-core made available a full history of events fired during an invocation, in the form of an EVENT_HISTORY object.

The Python interface into events is significantly less mature than the structured logging interface. For all standard use cases, we recommend parsing JSON-formatted logs.

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