org.rssys.context.core — org.rssys/context 0.1.4

*component-disabled* clj

Special config value, which prevents a component to start.

*components-path-vec* clj

A path in the system context where reside components (stateful objects)

*ignore-cyclic-deps?* clj

If false then throw Exception if cyclic dependency is detected. If true, ignore cyclic dependency loop and force to start.

*print-exceptions?* clj

Print exception info to stdout during start/stop operations with components.

*stopped-component-state* clj

Special value, which indicates that state is empty or stopped.

build-context clj

(build-context *new-ctx component-list)

Build a system context using given component-list. Params:

• *new-ctx - atom with map (empty or not), where to put result.
• component-list - vector of ::component Returns:
• *new-ctx - modified atom as system context if success.
• exception - if component-list is invalid or other errors.

create! clj

(create! *ctx new-component)

Create new component in the system context. Returns:

• r/success-types - if success.
• r/error-types - if failure.

delete! clj

(delete! *ctx id-kwd)

Delete a component from the system context. Returns:

• r/success-types - if success.
• r/error-types - if failure.

disabled-ids clj

(disabled-ids *ctx)

Get list of ids for all disabled components. Returns:

• vector of keywords.

disabled? clj

(disabled? *ctx id-kwd)

Check if the component is disabled.

EmptyState clj

get-component clj

(get-component *ctx id-kwd)

Returns: component state from system context using its id-kwd.

get-component-value clj

(get-component-value ctx id-kwd)

Returns: component value from system context value using its id-kwd

isolated-start! clj

(isolated-start! *ctx id-kwd)

(isolated-start! *ctx id-kwd start-fn stop-fn)

Isolated start a component ignoring all its dependencies, using given id-kwd and (optionally) the start/stop functions. Preserving :stops-deps value from previous isolated stop or start. Returns:

• r/success-types - if success.
• r/error-types - if failure.

isolated-stop! clj

(isolated-stop! *ctx id-kwd)

Isolated stop the component ignoring all its dependencies using given id-kwd. Preserving :stops-deps value from previous start. Returns:

• r/success-types - if success.
• r/error-types - if failure.

list-all-ids clj

(list-all-ids *ctx)

Get list of ids for all registered components. Returns:

• vector of keywords.

set-config! clj

(set-config! *ctx id-kwd new-config)

Set new config for a component. Returns:

• r/success-types - if success.
• r/error-types - if failure.

start! clj

(start! *ctx id-kwd)

(start! *ctx id-kwd dep-path-list)

(start! *ctx id-kwd start-fn stop-fn)

(start! *ctx id-kwd start-fn stop-fn dep-path-list)

Start a component and all its dependencies using given id-kwd and (optionally) the start/stop functions. Returns:

• r/success-types - if success.
• r/error-types - if failure.

start-all clj

(start-all *ctx)

Start all registered components, which are not started yet. Returns:

• r/success-types - if success.
• r/error-types - if failure.

start-some clj

(start-some *ctx component-list)

Start some of the registered components, which are not started yet. Params:

• component-list - vector of keywords with component's id. Returns:
• r/success-types - if success.
• r/error-types - if failure.

started-ids clj

(started-ids *ctx)

Get list of ids for all started components. Returns:

• vector of keywords.

started? clj

(started? *ctx id-kwd)

Check if the component is started.

stop! clj

(stop! *ctx id-kwd)

Stop the component and all its dependencies using given id-kwd. Returns:

• r/success-types - if success.
• r/error-types - if failure.

stop-all clj

(stop-all *ctx)

Stop all registered components, which are not stopped yet. Returns:

• r/success-types - if success.
• r/error-types - if failure.

stop-some clj

(stop-some *ctx component-list)

Stop some of the registered components, which are not stopped yet. Params:

• component-list - vector of keywords with component's id. Returns:
• r/success-types - if success.
• r/error-types - if failure.

stopped-ids clj

(stopped-ids *ctx)

Get list of ids for all stopped components. Returns:

• vector of keywords.

stopped? clj

Check if the component is stopped.

update! clj

(update! *ctx new-component-state)

Update a component's state in the system context. Returns:

• r/success-types - if success.
• r/error-types - if failure.