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systems.thoughtfull.amalgam
configureclj
(configure component config)(configure component config merge-fn)Recursively merge config map into component using merge-fns as necessary. Maps are recursively merged. Sets, vectors and lists are non-recursively concatenated.
This behavior can be overridden with merge-fns, which should match the structure of config and value. A merge function takes two arguments: the current value, and the configured value (respectively) and should return the final, resolved value.
Example:
user> (amalgam/configure {:a [1] :b {:c [2]}}
{:a [10] :b {:c [20] :d 30}}
{:b {:c amalgam/overwrite}})
{:a [1 10], :b {:c [20], :d 30}}
Recursively merge config map into component using merge-fns as necessary. Maps are recursively
merged. Sets, vectors and lists are non-recursively concatenated.
This behavior can be overridden with merge-fns, which should match the structure of config and
value. A merge function takes two arguments: the current value, and the configured value
(respectively) and should return the final, resolved value.
Example:
```clojure
user> (amalgam/configure {:a [1] :b {:c [2]}}
{:a [10] :b {:c [20] :d 30}}
{:b {:c amalgam/overwrite}})
{:a [1 10], :b {:c [20], :d 30}}
```overwriteclj
(overwrite _v c)Resolve current and configuration values by always taking the configuration value.
Resolve current and configuration values by always taking the configuration value.
run-systemclj
(run-system make-system read-config)(run-system make-system read-config merge-fns)Start a configured system and run it until the JVM exits.
make-system— no argument function returning a new systemread-config— no argument function returning the configuration map. The configuration map should mirror the structure of the system.merge-fns(optional) — map mirroring the structure of both the system and configuration maps that contains merge functions to resolve a final value from the current value and configured value.
Start a configured system and run it until the JVM exits. - **`make-system`** — no argument function returning a new system - **`read-config`** — no argument function returning the configuration map. The configuration map should mirror the structure of the system. - **`merge-fns`** (optional) — map mirroring the structure of both the system and configuration maps that contains merge functions to resolve a final value from the current value and configured value. See [[configure]] [[start-system]]
start-systemclj
(start-system make-system read-config)(start-system make-system read-config merge-fns)Construct, configure, then start a system.
make-system— no argument function returning a new systemread-config— no argument function returning the configuration map. The configuration map should mirror the structure of the system.merge-fns(optional) — map mirroring the structure of both the system and configuration maps that contains merge functions to resolve a final value from the current value and configured value.
Example:
user> (amalgam/start-system #(component/system-map :component (map->Component {:foo :bar}))
(constantly {:component {:foo :baz}})
{:component {:foo amalgam/overwrite}})
{:component {:foo :baz}}
See configure
Construct, configure, then start a system.
- **`make-system`** — no argument function returning a new system
- **`read-config`** — no argument function returning the configuration map. The configuration map
should mirror the structure of the system.
- **`merge-fns`** (optional) — map mirroring the structure of both the system and configuration
maps that contains merge functions to resolve a final value from the current value and
configured value.
Example:
```clojure
user> (amalgam/start-system #(component/system-map :component (map->Component {:foo :bar}))
(constantly {:component {:foo :baz}})
{:component {:foo amalgam/overwrite}})
{:component {:foo :baz}}
```
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