[#92] Support configuring max tree request attempts

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

cmd/http-gw/settings.go

@@ -96,6 +96,10 @@ const (
 	// Runtime.
 	cfgSoftMemoryLimit = "runtime.soft_memory_limit"
 
+	// Configuration of parameters of requests to FrostFS.
+	// Sets max attempt to make successful tree request.
+	cfgTreePoolMaxAttempts = "frostfs.tree_pool_max_attempts"
+
 	// Command line args.
 	cmdHelp          = "help"
 	cmdVersion       = "version"
@@ -461,6 +465,8 @@ func getPools(ctx context.Context, logger *zap.Logger, cfg *viper.Viper) (*pool.
 	prm.SetLogger(logger)
 	prmTree.SetLogger(logger)
 
+	prmTree.SetMaxRequestAttempts(cfg.GetInt(cfgTreePoolMaxAttempts))
+
 	var apiGRPCDialOpts []grpc.DialOption
 	var treeGRPCDialOpts []grpc.DialOption
 	if cfg.GetBool(cfgTracingEnabled) {

config/config.env

@@ -98,3 +98,7 @@ HTTP_GW_TRACING_ENDPOINT="localhost:4317"
 HTTP_GW_TRACING_EXPORTER="otlp_grpc"
 
 HTTP_GW_RUNTIME_SOFT_MEMORY_LIMIT=1073741824
+
+# Max attempt to make successful tree request.
+# default value is 0 that means the number of attempts equals to number of nodes in pool.
+HTTP_GW_FROSTFS_TREE_POOL_MAX_ATTEMPTS=0

config/config.yaml

@@ -104,3 +104,8 @@ zip:
 
 runtime:
   soft_memory_limit: 1gb
+
+frostfs:
+  # Max attempt to make successful tree request.
+  # default value is 0 that means the number of attempts equals to number of nodes in pool.
+  tree_pool_max_attempts: 0

docs/gate-configuration.md

@@ -54,6 +54,7 @@ $ cat http.log
 | `prometheus`    | [Prometheus configuration](#prometheus-section)       |
 | `tracing`       | [Tracing configuration](#tracing-section)             |
 | `runtime`       | [Runtime configuration](#runtime-section)             |
+| `frostfs`       | [Parameters of requests to FrostFS](#frostfs-section) |
 
 
 # General section
@@ -269,3 +270,16 @@ runtime:
 | Parameter           | Type   | SIGHUP reload | Default value | Description                                                                                                                                                                  |
 |---------------------|--------|---------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `soft_memory_limit` | `size` | yes           | maxint64      | Soft memory limit for the runtime. Zero or no value stands for no limit. If `GOMEMLIMIT` environment variable is set, the value from the configuration file will be ignored. |
+
+# `frostfs` section
+
+Contains parameters of requests to FrostFS.
+
+```yaml
+frostfs:
+  tree_pool_max_attempts: 0
+```
+
+| Parameter                | Type     | SIGHUP reload | Default value | Description                                                                                                               |
+|--------------------------|----------|---------------|---------------|---------------------------------------------------------------------------------------------------------------------------|
+| `tree_pool_max_attempts` | `uint32` | no            | `0`           | Sets max attempt to make successful tree request. Value 0 means the number of attempts equals to number of nodes in pool. |