Enhance observer options

Now it takes 2 subcommands
* direct
* blockfrost

hydra-chain-observer/README.md

@@ -13,7 +13,7 @@ To run the observer in Direct Mode, provide the following arguments:
 For example:
 
 ``` shell
-hydra-chain-observer \
+hydra-chain-observer direct \
   --node-socket testnets/preprod/node.socket \
   --testnet-magic 1 \
   --start-chain-from "41948777.5d34af0f42be9823ebd35c2d83d5d879c5615ac17f7158bb9aa4ef89072455a7"
@@ -23,15 +23,15 @@ hydra-chain-observer \
 ## Blockfrost Mode
 
 To run the observer in Blockfrost Mode, provide the following arguments:
-- `--project`: file path to your Blockfrost project API token hash.
+- `--project-path`: file path to your Blockfrost project API token hash.
 > expected to be prefixed with environment (e.g. testnetA3C2E...)
 - (optional) `--start-from-block-hash`: specify a block hash to start observing from.
 
 For example:
 
 ``` shell
-hydra-chain-observer \
-  --project project_token_hash \
+hydra-chain-observer blockfrost \
+  --project-path project_token_hash \
   --start-from-block-hash "5d34af0f42be9823ebd35c2d83d5d879c5615ac17f7158bb9aa4ef89072455a7"
 ```
 

hydra-chain-observer/src/Hydra/ChainObserver/Options.hs

@@ -11,10 +11,12 @@ import Hydra.Options (
 import Options.Applicative (
   Parser,
   ParserInfo,
+  command,
   fullDesc,
   header,
   help,
   helper,
+  hsubparser,
   info,
   long,
   metavar,
@@ -55,9 +57,9 @@ blockfrostOptionsParser =
 projectPathParser :: Parser FilePath
 projectPathParser =
   option str $
-    long "project"
+    long "project-path"
       <> metavar "BLOCKFROST_TOKEN_PATH"
-      <> value "./"
+      <> value "project_token_hash"
       <> help
         "The path where the Blockfrost project token hash is stored.\
         \It expects token prefixed with Blockfrost environment name\
@@ -73,10 +75,25 @@ startFromBlockHashParser =
         \used if the last known head state is older than given point. If not \
         \given and no known head state, the chain tip is used."
 
+directOptionsInfo :: ParserInfo Options
+directOptionsInfo =
+  info
+    optionsParser
+    (progDesc "Direct Mode")
+
+blockfrostOptionsInfo :: ParserInfo Options
+blockfrostOptionsInfo =
+  info
+    blockfrostOptionsParser
+    (progDesc "Blockfrost Mode")
+
 hydraChainObserverOptions :: ParserInfo Options
 hydraChainObserverOptions =
   info
-    ( (optionsParser <|> blockfrostOptionsParser)
+    ( hsubparser
+        ( command "direct" directOptionsInfo
+            <> command "blockfrost" blockfrostOptionsInfo
+        )
         <**> helper
     )
     ( fullDesc

hydra-explorer/src/Hydra/Explorer.hs

@@ -84,7 +84,8 @@ run opts = do
     (getExplorerState, modifyExplorerState) <- createExplorerState
 
     let chainObserverArgs =
-          Options.toArgNodeSocket nodeSocket
+          ["direct"]
+            <> Options.toArgNodeSocket nodeSocket
             <> Options.toArgNetworkId networkId
             <> toArgStartChainFrom startChainFrom
     race_