v3.3.0

• Metrics without labels have default values now (0). #37
• Boolean metric prometheus_boolean. #57 (more here: prometheus_boolean:set)
• More than 30% text format rendering speedup.

v3.2.3

Reorganize dependencies. Prod and develop profiles are now dependency-free.

Can be used an elixir dependency

v3.2.2

bump to 3.2.2

prometheus_registry:exists/1

v3.2.1

add prometheus_registry:exists/1 and bump to 3.2.1

Very minor fixes

update doc and bump to 3.1.1

add extatus and beam-dashboards to the readme

v3.1.0

New:

• Mnesia Contrib

3.0.1

Bug-fixes

• windows build bug fix (#40).

Optimizations

• workaround ets locking using schdulers pinning (#43);
• counter benchmarks.

Documentation

• remove obsolete files, formatting (#41).

3.0.0

Breaking Changes:

• invalid_metric_arity tuple changed. Added metric real arity to invalid_metric_arity error tuple;
• fix histogram,summary:observe_duration arguments order (Registry now goes first);
• changed collect_mf/3,2 args order;
• default collectors env key changed to 'collectors';
• default instrumenters env key changed to 'instrumenters';
• prometheus_buckets removed deprecations
  generate_linear/3,
  generate_exponential/3;
• prometheus_histogram: removed deprecated bounds config support;
• tweak histogram_invalid_buckets error tuple. It always has three elements now;
• default microseconds buckets: [10, 25, 50, 100, 250, 500, %% microseconds 1000, 2500, 5000, 10000, 25000, 50000, 100000, 250000, 500000, %% milliseconds 1000000, 2500000, 5000000, 10000000];
• prometheus_histogram:*_buckets functions are private.

Deprecations:

• deprecate prometheus_collector:register/deregister;
• deprecate metric:new,declare/2.

What's new:

• added metric real arity to invalid_metric_arity error tuple;
• :value returns undefined for unknown label set;
• :set,reset,value raise unknown_metric|invalid_metric_arity;
• :observe,observe_duration,track_inprogress raise unknown_metric|invalid_metric_arity;
• :d functions raise unknown_metric|invalid_metric_arity before gen_server:cast;
• :new,declare/1 accept registry key;
• prometheus_registry:register_collector(s),deregister_collector/1;
• prometheus_registry:collector_registeredp/1;
• gauge:set accepts undefined which is rendered as NaN;
• new error messages;
• track_inprogress/observe_duration raise invalid_value error when Fun is not a function;
• gauge (d)inc/(d)dec;
• gauge:set_duration;
• :remove - can remove series for a given label set;
• untyped metric support;
• erlang_vm_system_info_collector;
• new time measurement system #32;
• gen_server:call support with custom timeout #33;
• erlang_vm_statistics_garbage_collection_bytes_reclaimed metric;
• mnesia collector.

Other

• rebar3 updated;
• coveralls integration;
• tests, refactors;
• docs.

3.0.0-rc1

Breaking Changes:

• invalid_metric_arity tuple changed. Added metric real arity to invalid_metric_arity error tuple;
• fix histogram,summary:observe_duration arguments order (Registry now goes first);
• changed collect_mf/3,2 args order;
• default collectors env key changed to 'collectors';
• default instrumenters env key changed to 'instrumenters';
• prometheus_buckets removed deprecations
  generate_linear/3,
  generate_exponential/3;
• prometheus_histogram: removed deprecated bounds config support;
• tweak histogram_invalid_buckets error tuple. It always has three elements now;
• prometheus_histogram:*_buckets functions are private.

Deprecations:

• deprecate prometheus_collector:register/deregister;
• deprecate metric:new,declare/2.

What's new:

• added metric real arity to invalid_metric_arity error tuple;
• :value returns undefined for unknown label set;
• :set,reset,value raise unknown_metric|invalid_metric_arity;
• :observe,observe_duration,track_inprogress raise unknown_metric|invalid_metric_arity;
• :d functions raise unknown_metric|invalid_metric_arity before gen_server:cast;
• :new,declare/1 accept registry key;
• prometheus_registry:register_collector(s),deregister_collector/1;
• prometheus_registry:collector_registeredp/1;
• gauge:set accepts undefined which is rendered as NaN;
• new error messages;
• track_inprogress/observe_duration raise invalid_value error when Fun is not a function;
• gauge (d)inc/(d)dec;
• gauge:set_duration;
• :remove - can remove series for a given label set;
• untyped metric support;
• erlang_vm_system_info_collector;
• new time measurement system #32;
• gen_server:call support with custom timeout #33.

Other

• rebar3 updated;
• coveralls integration;
• tests, refactors;
• docs.

3.0.0-alpha9

Breaking Changes:

• invalid_metric_arity tuple changed. Added metric real arity to invalid_metric_arity error tuple;
• fix histogram,summary:observe_duration arguments order (Registry now goes first);
• changed collect_mf/3,2 args order;
• default collectors env key changed to 'collectors';
• default instrumenters env key changed to 'instrumenters';
• prometheus_buckets removed deprecations
  generate_linear/3,
  generate_exponential/3;
• prometheus_histogram: removed deprecated bounds config support;
• tweak histogram_invalid_buckets error tuple. It always has three elements now.

Deprecations:

• deprecate prometheus_collector:register/deregister;
• deprecate metric:new,declare/2.

What's new:

• added metric real arity to invalid_metric_arity error tuple;
• :value returns undefined for unknown label set;
• :set,reset,value raise unknown_metric|invalid_metric_arity;
• :observe,observe_duration,track_inprogress raise unknown_metric|invalid_metric_arity;
• :d functions raise unknown_metric|invalid_metric_arity before gen_server:cast;
• :new,declare/1 accept registry key;
• prometheus_registry:register_collector(s),deregister_collector/1;
• prometheus_registry:collector_registeredp/1;
• gauge:set accepts undefined which is rendered as NaN;
• new error messages;
• track_inprogress/observe_duration raise invalid_value error when Fun is not a function;
• gauge (d)inc/(d)dec;
• gauge:set_duration;
• :remove - can remove series for a given label set;
• untyped metric support;
• erlang_vm_system_info_collector;
• new time measurement system #32;
• gen_server:call support with custom timeout #33.

Other

• rebar3 updated;
• coveralls integration;
• tests, refactors