farside/lib/farside.ex
Ben Busby 56b9c52528
Display list of available instances on home page
This introduces a number of new changes:
- Services are now inserted into redis with a prefix prepended to the
key name. This allows for easier filtering to get only live instances.
- The home page now uses an eex template for displaying all live
instances for every service, determined by the last update
- A "last_updated" field was added
- farside.ex was added to contain all functionality related to querying
for instances (WIP)
- Other improvements
2021-11-08 17:08:19 -07:00

46 lines
931 B
Elixir

defmodule Farside do
@service_prefix Application.fetch_env!(:farside, :service_prefix)
def get_services_map do
{:ok, redis_keys} = Redix.command(:redix, ["KEYS", "*"])
# Extract only service related keys
service_list =
Enum.filter(
redis_keys,
fn key ->
String.starts_with?(key, @service_prefix)
end
)
# Match service name to list of available instances
Enum.reduce(service_list, %{}, fn service, acc ->
{:ok, instance_list} =
Redix.command(
:redix,
["LRANGE", service, "0", "-1"]
)
Map.put(
acc,
String.replace_prefix(
service,
@service_prefix,
""
),
instance_list
)
end)
end
def get_last_updated do
{:ok, last_updated} =
Redix.command(
:redix,
["GET", "last_updated"]
)
last_updated
end
end