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Use docker to build cassandra jar file
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package main | ||
|
|
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| // #include <stdio.h> | ||
| // #include <stdlib.h> | ||
| import "C" | ||
|
|
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| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "log" | ||
| "strings" | ||
| "unicode" | ||
| "unsafe" | ||
|
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| "github.com/ericchiang/k8s" | ||
| corev1 "github.com/ericchiang/k8s/apis/core/v1" | ||
| ) | ||
|
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| type endpoints struct { | ||
| IPs []string `json:"ips"` | ||
| } | ||
|
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| // GetEndpoints searches the endpoints of a service returning a list of IP addresses. | ||
| //export GetEndpoints | ||
| func GetEndpoints(namespace, service, defSeeds *C.char) *C.char { | ||
| ns := C.GoString(namespace) | ||
| svc := C.GoString(service) | ||
| seeds := C.GoString(defSeeds) | ||
|
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| s := strings.Map(func(r rune) rune { | ||
| if unicode.IsSpace(r) { | ||
| return -1 | ||
| } | ||
| return r | ||
| }, seeds) | ||
|
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| nseeds := strings.Split(s, ",") | ||
| client, err := k8s.NewInClusterClient() | ||
| if err != nil { | ||
| log.Printf("unexpected error opening a connection against API server: %v\n", err) | ||
| log.Printf("returning default seeds: %v\n", nseeds) | ||
| return buildEndpoints(nseeds) | ||
| } | ||
|
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| ips := make([]string, 0) | ||
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| var endpoints corev1.Endpoints | ||
| err = client.Get(context.Background(), ns, svc, &endpoints) | ||
| if err != nil { | ||
| log.Printf("unexpected error obtaining information about service endpoints: %v\n", err) | ||
| log.Printf("returning default seeds: %v\n", nseeds) | ||
| return buildEndpoints(nseeds) | ||
| } | ||
|
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| for _, endpoint := range endpoints.Subsets { | ||
| for _, address := range endpoint.Addresses { | ||
| ips = append(ips, *address.Ip) | ||
| } | ||
| } | ||
|
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| if len(ips) == 0 { | ||
| return buildEndpoints(nseeds) | ||
| } | ||
|
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| return buildEndpoints(ips) | ||
| } | ||
|
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| func buildEndpoints(ips []string) *C.char { | ||
| b, err := json.Marshal(&endpoints{ips}) | ||
| if err != nil { | ||
| log.Printf("unexpected error serializing JSON response: %v\n", err) | ||
| rc := C.CString(`{"ips":[]}`) | ||
| defer C.free(unsafe.Pointer(rc)) | ||
| return rc | ||
| } | ||
|
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| rc := C.CString(string(b)) | ||
| defer C.free(unsafe.Pointer(rc)) | ||
| return rc | ||
| } | ||
|
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||
| func main() {} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* Created by "go tool cgo" - DO NOT EDIT. */ | ||
|
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| /* package command-line-arguments */ | ||
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| #line 1 "cgo-builtin-prolog" | ||
|
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| #include <stddef.h> /* for ptrdiff_t below */ | ||
|
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| #ifndef GO_CGO_EXPORT_PROLOGUE_H | ||
| #define GO_CGO_EXPORT_PROLOGUE_H | ||
|
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| typedef struct { const char *p; ptrdiff_t n; } _GoString_; | ||
|
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| #endif | ||
|
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| /* Start of preamble from import "C" comments. */ | ||
|
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|
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| #line 3 "/home/aledbf/go/src/k8s.io/examples/cassandra/go/main.go" | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
|
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| #line 1 "cgo-generated-wrapper" | ||
|
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|
|
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| /* End of preamble from import "C" comments. */ | ||
|
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|
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| /* Start of boilerplate cgo prologue. */ | ||
| #line 1 "cgo-gcc-export-header-prolog" | ||
|
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| #ifndef GO_CGO_PROLOGUE_H | ||
| #define GO_CGO_PROLOGUE_H | ||
|
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| typedef signed char GoInt8; | ||
| typedef unsigned char GoUint8; | ||
| typedef short GoInt16; | ||
| typedef unsigned short GoUint16; | ||
| typedef int GoInt32; | ||
| typedef unsigned int GoUint32; | ||
| typedef long long GoInt64; | ||
| typedef unsigned long long GoUint64; | ||
| typedef GoInt64 GoInt; | ||
| typedef GoUint64 GoUint; | ||
| typedef __SIZE_TYPE__ GoUintptr; | ||
| typedef float GoFloat32; | ||
| typedef double GoFloat64; | ||
| typedef float _Complex GoComplex64; | ||
| typedef double _Complex GoComplex128; | ||
|
|
||
| /* | ||
| static assertion to make sure the file is being used on architecture | ||
| at least with matching size of GoInt. | ||
| */ | ||
| typedef char _check_for_64_bit_pointer_matching_GoInt[sizeof(void*)==64/8 ? 1:-1]; | ||
|
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| typedef _GoString_ GoString; | ||
| typedef void *GoMap; | ||
| typedef void *GoChan; | ||
| typedef struct { void *t; void *v; } GoInterface; | ||
| typedef struct { void *data; GoInt len; GoInt cap; } GoSlice; | ||
|
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| #endif | ||
|
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| /* End of boilerplate cgo prologue. */ | ||
|
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
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|
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| // GetEndpoints searches the endpoints of a service returning a list of IP addresses. | ||
|
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| extern char* GetEndpoints(char* p0, char* p1, char* p2); | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif |
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54 changes: 54 additions & 0 deletions
54
cassandra/java/src/main/java/io/k8s/cassandra/GoInterface.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
|
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| /* | ||
| * Copyright (C) 2018 Google Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| * use this file except in compliance with the License. You may obtain a copy of | ||
| * the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | ||
| * License for the specific language governing permissions and limitations under | ||
| * the License. | ||
| */ | ||
|
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| package io.k8s.cassandra; | ||
|
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| import java.util.Arrays; | ||
| import java.util.List; | ||
|
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| import com.sun.jna.Library; | ||
| import com.sun.jna.Pointer; | ||
| import com.sun.jna.Structure; | ||
|
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| public interface GoInterface extends Library { | ||
| public String GetEndpoints(String namespace, String service, String seeds); | ||
|
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| public class GoSlice extends Structure { | ||
| public static class ByValue extends GoSlice implements Structure.ByValue { | ||
| } | ||
|
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| public Pointer data; | ||
| public long len; | ||
| public long cap; | ||
|
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| protected List<String> getFieldOrder() { | ||
| return Arrays.asList(new String[] { "data", "len", "cap" }); | ||
| } | ||
| } | ||
|
|
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| public class GoString extends Structure { | ||
| public static class ByValue extends GoString implements Structure.ByValue { | ||
| } | ||
|
|
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| public String p; | ||
| public long n; | ||
|
|
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| protected List<String> getFieldOrder() { | ||
| return Arrays.asList(new String[] { "p", "n" }); | ||
| } | ||
| } | ||
| } |
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