use tidb cophandler to handle coprocessor request. (#400)

go.mod

@@ -14,10 +14,8 @@ require (
 	github.com/pingcap/errors v0.11.5-0.20190809092503-95897b64e011
 	github.com/pingcap/kvproto v0.0.0-20200518112156-d4aeb467de29
 	github.com/pingcap/log v0.0.0-20200511115504-543df19646ad
-	github.com/pingcap/parser v0.0.0-20200522094936-3b720a0512a6
 	github.com/pingcap/pd/v4 v4.0.0-rc.2.0.20200520083007-2c251bd8f181
-	github.com/pingcap/tidb v1.1.0-beta.0.20200603101356-552e7709de0d
-	github.com/pingcap/tipb v0.0.0-20200417094153-7316d94df1ee
+	github.com/pingcap/tidb v1.1.0-beta.0.20200604055950-efc1c154d098
 	github.com/prometheus/client_golang v1.5.1
 	github.com/shirou/gopsutil v2.19.10+incompatible
 	github.com/stretchr/testify v1.5.1

go.sum

@@ -91,6 +91,7 @@ github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmf
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e h1:Wf6HqHfScWJN9/ZjdUKyjop4mf3Qdd+1TvvltAvM3m8=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f h1:JOrtw2xFKzlg+cbHpyrpLDmnN1HqhBfnX7WDiW7eG2c=
 github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
@@ -403,6 +404,7 @@ github.com/ngaut/pools v0.0.0-20180318154953-b7bc8c42aac7/go.mod h1:iWMfgwqYW+e8
 github.com/ngaut/sync2 v0.0.0-20141008032647-7a24ed77b2ef h1:K0Fn+DoFqNqktdZtdV3bPQ/0cuYh2H4rkg0tytX/07k=
 github.com/ngaut/sync2 v0.0.0-20141008032647-7a24ed77b2ef/go.mod h1:7WjlapSfwQyo6LNmIvEWzsW1hbBQfpUO4JWnuQRmva8=
 github.com/ngaut/unistore v0.0.0-20200603091253-e0b717679796/go.mod h1:9mpqZeS1CkNlgZwJ0LZXb+Qd7xVO5o55ngys7T1/oH8=
+github.com/ngaut/unistore v0.0.0-20200604043635-5004cdad650f/go.mod h1:5Vec+R2BwOyugVQ8Id8uDmlIYbqodCvykM50IpaAjk4=
 github.com/nicksnyder/go-i18n v1.10.0/go.mod h1:HrK7VCrbOvQoUAQ7Vpy7i87N7JZZZ7R2xBGjv0j365Q=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
 github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
@@ -497,6 +499,8 @@ github.com/pingcap/tidb v1.1.0-beta.0.20200513065557-5a0787dfa915 h1:I2a/RvdAP5x
 github.com/pingcap/tidb v1.1.0-beta.0.20200513065557-5a0787dfa915/go.mod h1:khS9Z9YlbtxsaZsSsSahelgh5L16EtP30QADFmPiI/I=
 github.com/pingcap/tidb v1.1.0-beta.0.20200603101356-552e7709de0d h1:U4Bm4KdtCfOIH1L5QbWFeck32gjZhLb7dCoTkEc1vPY=
 github.com/pingcap/tidb v1.1.0-beta.0.20200603101356-552e7709de0d/go.mod h1:wgu4vP3wq+x/l1X3ckOZFvyGKcVIBkq30NQVh0Y+qYA=
+github.com/pingcap/tidb v1.1.0-beta.0.20200604055950-efc1c154d098 h1:O930BM9xqiV+6JN+PpqC54b8lx8rQA9F4irShNcaXlA=
+github.com/pingcap/tidb v1.1.0-beta.0.20200604055950-efc1c154d098/go.mod h1:UMxsNE326wyfgFJCx6aerPRLj1/tGPYDBKS9T9NOHI8=
 github.com/pingcap/tidb-tools v4.0.0-beta.1.0.20200306084441-875bd09aa3d5+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
 github.com/pingcap/tidb-tools v4.0.0-rc.1.0.20200421113014-507d2bb3a15e+incompatible h1:+K5bqDYG5HT+GqLdx4GH5VmS84+xHgpHbGg6Xt6qQec=
 github.com/pingcap/tidb-tools v4.0.0-rc.1.0.20200421113014-507d2bb3a15e+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
@@ -631,6 +635,7 @@ github.com/uber-go/atomic v1.3.2/go.mod h1:/Ct5t2lcmbJ4OSe/waGBoaVvVqtO0bmtfVNex
 github.com/uber/jaeger-client-go v2.15.0+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
 github.com/uber/jaeger-client-go v2.22.1+incompatible h1:NHcubEkVbahf9t3p75TOCR83gdUHXjRJvjoBh1yACsM=
 github.com/uber/jaeger-client-go v2.22.1+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
+github.com/uber/jaeger-lib v1.5.0 h1:OHbgr8l656Ub3Fw5k9SWnBfIEwvoHQ+W2y+Aa9D1Uyo=
 github.com/uber/jaeger-lib v1.5.0/go.mod h1:ComeNDZlWwrWnDv8aPp0Ba6+uUTzImX/AauajbLI56U=
 github.com/uber/jaeger-lib v2.2.0+incompatible h1:MxZXOiR2JuoANZ3J6DE/U0kSFv/eJ/GfSYVCjK7dyaw=
 github.com/uber/jaeger-lib v2.2.0+incompatible/go.mod h1:ComeNDZlWwrWnDv8aPp0Ba6+uUTzImX/AauajbLI56U=