Merge pull request #22 from Holo-Host/prefs-to-yaml

Write default servicelogger prefs to file on HPOS

src/entries.rs

@@ -1,9 +1,12 @@
+use anyhow::{Context, Result};
 use hc_utils::{WrappedActionHash, WrappedAgentPubKey};
 use holochain_types::prelude::MembraneProof;
 use holofuel_types::fuel::Fuel;
 use serde::Deserialize;
 use serde::Serialize;
-use std::collections::HashMap;
+use std::fs::File;
+use std::{collections::HashMap, env};
+use tracing::info;
 
 #[derive(Deserialize, Debug, Clone)]
 pub struct DnaResource {
@@ -32,6 +35,22 @@ pub struct Preferences {
     pub price_storage: Fuel,
     pub price_bandwidth: Fuel,
 }
+impl Preferences {
+    /// Save preferences to a file under {SL_PREFS_PATH}
+    /// which allows hpos-holochain-api to read current values
+    pub fn save(self) -> Result<Self> {
+        if let Ok(path) = env::var("SL_PREFS_PATH") {
+            info!("Writing default servicelogger prefs to {}", &path);
+            // create or overwrite to a file
+            let file = File::create(&path)?;
+            serde_yaml::to_writer(file, &self).context(format!(
+                "Failed writing service logger preferences to file {}",
+                path
+            ))?;
+        };
+        Ok(self)
+    }
+}
 
 #[derive(Serialize, Debug, Clone)]
 pub struct InstallHappBody {

src/lib.rs

@@ -40,6 +40,17 @@ pub struct HappPkg {
 
 pub async fn install_holo_hosted_happs(happs: &[HappPkg], config: &Config) -> Result<()> {
     info!("Starting to install....");
+
+    // Hardcoded servicelogger preferences for all the hosted happs installed
+    let preferences = Preferences {
+        max_fuel_before_invoice: Fuel::from_str("1000")?, // MAX_TX_AMT in holofuel is currently hard-coded to 50,000
+        max_time_before_invoice: vec![86400, 0],
+        price_compute: Fuel::from_str("0.025")?,
+        price_storage: Fuel::from_str("0.025")?,
+        price_bandwidth: Fuel::from_str("0.025")?,
+    }
+    .save()?;
+
     if happs.is_empty() {
         info!("No happs registered to be enabled for hosting.");
         return Ok(());
@@ -61,14 +72,7 @@ pub async fn install_holo_hosted_happs(happs: &[HappPkg], config: &Config) -> Re
     );
 
     let client = reqwest::Client::new();
-    // Note: Tmp preferences
-    let preferences = Preferences {
-        max_fuel_before_invoice: Fuel::from_str("10000")?, // MAX_TX_AMT in holofuel is currently hard-coded to 50,000
-        max_time_before_invoice: vec![86400, 0],
-        price_compute: Fuel::from_str("1")?,
-        price_storage: Fuel::from_str("1")?,
-        price_bandwidth: Fuel::from_str("1")?,
-    };
+
     // iterate through the vec and
     // Call http://localhost/holochain-api/install_hosted_happ
     // for each WrappedActionHash to install the hosted_happ