Merge branch 'node-url-env' into 'main'

add env override for node URL

See merge request flarenetwork/flare-system-c-chain-indexer!33

README.md

@@ -56,7 +56,8 @@ file = "./logger/logs/flare-ftso-indexer.log"
 console = true
 
 [chain]
-node_url = "http://127.0.0.1:8545/"
+node_url = "http://127.0.0.1:8545/"  # or NODE_URL environment variable
+# api_key = ...  or NODE_API_KEY environment variable
 
 [timeout]
 backoff_max_elapsed_time_seconds = 300 # optional, defaults to 300s = 5 minutes. Affects how long the indexer will keep retrying in case of a complete outage of the node provider. Set to 0 to retry indefinitely.

config/config.go

@@ -149,6 +149,7 @@ func (cc ChainConfig) FullNodeURL() (*url.URL, error) {
 var envOverrides = map[string]func(*Config, string){
 	"DB_USERNAME":  func(c *Config, v string) { c.DB.Username = v },
 	"DB_PASSWORD":  func(c *Config, v string) { c.DB.Password = v },
+	"NODE_URL":     func(c *Config, v string) { c.Chain.NodeURL = v },
 	"NODE_API_KEY": func(c *Config, v string) { c.Chain.APIKey = v },
 }