From a11779ec1bcee496ecc3086a41ac650ae9637c53 Mon Sep 17 00:00:00 2001
From: niean <niean.sail@gmail.com>
Date: Sun, 24 Apr 2016 07:24:14 +0000
Subject: [PATCH] add api of deleting one index

---
 g/g.go               |  3 ++-
 g/git.go             |  3 +--
 graph/index.go       | 60 ++++++++++++++++++++++++++++++++++++++++++++
 http/graph_http.go   | 35 ++++++++++++++++++++++++++
 scripts/index.delete | 30 ++++++++++++++++++++++
 5 files changed, 128 insertions(+), 3 deletions(-)
 create mode 100644 graph/index.go
 create mode 100755 scripts/index.delete

diff --git a/g/g.go b/g/g.go
index 1b4e402..92fbe7b 100644
--- a/g/g.go
+++ b/g/g.go
@@ -13,9 +13,10 @@ import (
 // 1.4.1 add last item counter, add proc for connpool
 // 1.4.2 rm nil items in http.responses
 // 1.4.3 spell check, make config consistent with previous
+// 1.4.4 add api of deleting one index
 
 const (
-	VERSION = "1.4.3"
+	VERSION = "1.4.4"
 )
 
 func init() {
diff --git a/g/git.go b/g/git.go
index 0924b43..0f198ce 100644
--- a/g/git.go
+++ b/g/git.go
@@ -1,5 +1,4 @@
 package g
-
 const (
-	COMMIT = "a5ad45c"
+    COMMIT = "ea558f8"
 )
diff --git a/graph/index.go b/graph/index.go
new file mode 100644
index 0000000..11c33ff
--- /dev/null
+++ b/graph/index.go
@@ -0,0 +1,60 @@
+package graph
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	cmodel "github.com/open-falcon/common/model"
+	spool "github.com/toolkits/pool/simple_conn_pool"
+
+	"github.com/open-falcon/query/g"
+)
+
+func DeleteIndex(para *cmodel.GraphCounter) (*cmodel.SimpleRpcResponse, error) {
+	endpoint, counter := para.Endpoint, para.Counter
+	if len(endpoint) < 1 || len(counter) < 1 {
+		return nil, fmt.Errorf("empty")
+	}
+
+	pool, addr, err := selectPool(endpoint, counter)
+	if err != nil {
+		return nil, err
+	}
+
+	conn, err := pool.Fetch()
+	if err != nil {
+		return nil, err
+	}
+
+	rpcConn := conn.(spool.RpcClient)
+	if rpcConn.Closed() {
+		pool.ForceClose(conn)
+		return nil, errors.New("conn closed")
+	}
+
+	type ChResult struct {
+		Err  error
+		Resp *cmodel.SimpleRpcResponse
+	}
+	ch := make(chan *ChResult, 1)
+	go func() {
+		resp := &cmodel.SimpleRpcResponse{}
+		err := rpcConn.Call("Graph.DeleteIndex", para, resp)
+		ch <- &ChResult{Err: err, Resp: resp}
+	}()
+
+	select {
+	case <-time.After(time.Duration(g.Config().Graph.CallTimeout) * time.Millisecond):
+		pool.ForceClose(conn)
+		return nil, fmt.Errorf("%s, call timeout. proc: %s", addr, pool.Proc())
+	case r := <-ch:
+		if r.Err != nil {
+			pool.ForceClose(conn)
+			return nil, fmt.Errorf("%s, call failed, err %v. proc: %s", addr, r.Err, pool.Proc())
+		} else {
+			pool.Release(conn)
+			return r.Resp, nil
+		}
+	}
+}
diff --git a/http/graph_http.go b/http/graph_http.go
index 91667e7..a372b01 100644
--- a/http/graph_http.go
+++ b/http/graph_http.go
@@ -178,4 +178,39 @@ func configGraphRoutes() {
 		StdRender(w, data, nil)
 	})
 
+	// 彻底删除 监控指标的索引
+	http.HandleFunc("/graph/index/delete", httpHandler_deleteIndex)
+}
+
+func httpHandler_deleteIndex(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		RenderMsgJson(w, "bad http method, use post")
+		return
+	}
+
+	var body []*cmodel.GraphCounter
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&body)
+	if err != nil {
+		RenderMsgJson(w, err.Error())
+		return
+	}
+	if len(body) < 1 {
+		RenderMsgJson(w, "empty")
+		return
+	}
+
+	counter := body[0]
+	resp, err := graph.DeleteIndex(counter)
+	if err != nil {
+		RenderMsgJson(w, err.Error())
+		return
+	}
+
+	if resp.Code != 0 {
+		RenderMsgJson(w, resp.Msg)
+		return
+
+	}
+	RenderDataJson(w, "")
 }
diff --git a/scripts/index.delete b/scripts/index.delete
new file mode 100755
index 0000000..4244f6d
--- /dev/null
+++ b/scripts/index.delete
@@ -0,0 +1,30 @@
+#!/bin/bash
+## test home
+testdir=$(cd $(dirname $0)/; pwd)
+## word home
+workdir=$(dirname $testdir)
+cd $workdir
+
+cfg=./cfg.json
+httpport=80
+if [ -f $cfg ]; then
+    httpport=`cat $cfg | grep -A3 "\"http\":" | grep "\"listen\"" | cut -d\" -f4 | cut -d: -f2`
+fi
+httpprex="127.0.0.1:$httpport"
+
+if [ $# != 2 ];then
+    printf "format:./query \"endpoint\" \"counter\"\n"
+    exit 1
+fi
+
+# args
+endpoint=$1
+counter=$2
+
+# form request body
+req="[{\"endpoint\":\"$endpoint\", \"counter\":\"$counter\"}]"
+
+# request 
+url="$httpprex/graph/index/delete"
+
+curl -s -X POST -d "$req" "$url" | python -m json.tool