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Android + JSON-RPC
shibuya.apk #10
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About Me
Shinobu Okano
@operandoOS
Mercari, Inc.
Souzoh, Inc.
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No content
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shinobu.apk #3
Γ·͢ʂʂ
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Androidʹ͍ͭͯޠΔ!
shinobu.apk #1 Λ։࠵͠·ͨ͠ʂ
http://tech.mercari.com/entry/2016/02/12/122918
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shinobu.apk #2 ͷύωϧσΟεΧογϣϯ
ԻσʔλͱShow NotesΛެ։͠·ͨ͠ʂ
http://hack-it-iron.hatenablog.com/entry/
2016/04/20/124823
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http://shinobu-apk.connpass.com/event/40202/
Join!!
shinobu.apk #3
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JSON-RPC??
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JSON-RPC
“JSON-RPC is a stateless, light-weight
remote procedure call (RPC) protocol.”
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JSON-RPC spec
http://www.jsonrpc.org/specification
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RPC
• gRPC
• http://www.grpc.io/
• Go Conference 2016 SpringͰgRPCͷݱঢ়ʹ͍ͭͯ
ൃද͖ͯ͠·ͨ͠
• http://tech.mercari.com/entry/
2016/04/27/145227
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JSON-RPC 2.0
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JSON-RPC
HTTP bodyͷJSONͰϦΫΤετΛهड़͢Δ
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JSON-RPC Request
{
"jsonrpc": "2.0",
"method": "subtract",
"params": [
42,
23
],
"id": 1
}
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JSON-RPC Response
{
"jsonrpc": "2.0",
"result": 19,
"id": 1
}
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JSON-RPC Batch
1ճͷ௨৴ͰෳͷϦΫΤετΛૹΕΔ
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JSON-RPC Request
[
{
"id": 1,
"jsonrpc": "2.0",
"method": "shibuya.apk",
"params": { ... }
},
{
"id": 2,
"jsonrpc": "2.0",
"method": "shinobu.apk",
"params": { ... }
}
]
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JSON-RPC Response
[
{
"id": 1,
"jsonrpc": "2.0",
"result": { ... }
},
{
"id": 2,
"jsonrpc": "2.0",
"result": { ... }
}
]
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Կʹ͏ͷ??
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Կʹ͏ͷ??
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Կʹ͏ͷ??
• λΠϜϥΠϯͷߘΛऔಘ
• ݱࡏͷ࠲ඪΛॅॴʹม͢Δ
• όφʔΛऔಘ͢Δ
ҎԼͷϦΫΤετ͕1ճͷϦΫΤετͰͰ͖Δ
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GET /home??
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ෳͷॲཧΛ·ͱΊͨAPI
༷͕յΕ͍͢
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JSON-RPC Batch
• APIݸʑͷॲཧΛϝιουͱͯ͠ఆٛ
• ΫϥΠΞϯτଆͰݸʑͷॲཧΛ1ͭͷ
ϦΫΤετʹ·ͱΊͯݺͼग़͢
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JSON-RPC Request
[
{
"id": 1,
"jsonrpc": "2.0",
"method": "GetTimeline",
"params": { ... }
},
{
"id": 2,
"jsonrpc": "2.0",
"method": "GetBanner",
"params": { ... }
}
]
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JSON-RPC Response
[
{
"id": 1,
"jsonrpc": "2.0",
"result": { ... }
},
{
"id": 2,
"jsonrpc": "2.0",
"result": { ... }
}
]
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Αͦ͞͏!!
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͡ΌAndroidͰ࣮͢Δ͔!!
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OkHttpͬͯॻ͍ͯΈΔ Request
OkHttpClient client;
JSONObject json = new JSONObject();
JsonArray params = new JsonArray();
json.put("method","subtract");
params.put(42);
params.put(23);
json.put("params",params);
RequestBody requestBody = RequestBody.create(MEDIA_TYPE,
json.toString().getBytes());
Request request = new Request.Builder()
.url("https://....")
.post(requestBody)
.build();
Response response = client.newCall(request).execute();
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OkHttpͬͯॻ͍ͯΈΔ Response
Response response = client.newCall(request).execute();
// ... isSuccessfulͷνΣοΫͱ͔...
ResponseBody value = response.body();
JSONObject j = new JSONObject(value.string());
int result = j.getInt("result");// return 19
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͜ΕΠέͯ·͔͢Ͷʁʁ
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Πέͯͳ͍Ͱ͢ΑͶ...
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͍͍ײ͡ͷLibrary͋ΔΜ͡ΌͶ…
ݕࡧݕࡧ
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͋·Γͳ͍??
• jsonrpc4j
• https://github.com/briandilley/jsonrpc4j
• BatchʹରԠͯ͠ͳ͍??
• retrofit-jsonrpc
• https://github.com/segmentio/retrofit-jsonrpc
• BatchʹରԠͯ͠ͳ͍??
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్ํʹΕΔʑ...
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͋ʔͳΜͰ͜ΜͳAPIʹ
ͳͬͯΔΜͩ...
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͏͎…ΘΔ͘ͳ͍...
(ɻ-ω-)
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ͦ͏ݴͬͯΒΕͳ͍...
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ͦ͏ͩʂ
ࣗͰ࡞Ε͍͍Μͩʂ
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࡞ͬͯΈͨ
※·Ͱʹίʔυ͕ެ։Ͱ͖·ͤΜͰͨ͠
͍͢·ͤΜ
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࡞Δલʹߟ͑ͨ͜ͱ
• ຖճಉ͡ॲཧॻ͖ͨ͘ͳ͍
• ϦΫΤετͷܕ͕ܾ·ΕϨεϙϯεͷܕ͕ܾ·Δ
• ϦΫΤετͱϨεϙϯεΛܕͰఆٛ
• Batch ϦΫΤετΛ͍͍ײ͡ʹड͚औΓ͍ͨ
• Rxͱ͔ͬͪΌ͏ʁʁ
• ಛఆͷ௨৴ϥΠϒϥϦʹґଘ͠ͳ͍
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JSON-RPCͷΫϥΠΞϯτ࣮Ͱେมͩͬͨ͜ͱ
• Batch ϦΫΤετͷड͚औΓํ
• ΤϥʔϋϯυϦϯά
• RetrofitͷԸܙ͕ड͚ΒΕͳ͍…
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Ϩεϙϯεͷύλʔϯ
• OK 1ͭͷϨεϙϯε
• OK ෳͷϨεϙϯε(2,3ͭ)
• NG શϨεϙϯεΤϥʔ
• NG Ұ෦ͷϨεϙϯεΤϥʔ
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Batch ϦΫΤετͷड͚औΓํ
• ෳͷϦΫΤετΛ࡞Δ
• ࡞ͬͨϦΫΤετΛ·ͱΊͯAPIʹ͛Δ
• ෳͷϨεϙϯε͕ฦͬͯ͘Δ
• ϋϯυϦϯάͯ͠ϨεϙϯεΛ௨͢Δ
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ෳͷϨεϙϯε...??
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ෳͷϨεϙϯε...??
• List ??
• List> ??
• List ??
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ͲΕΠέͯͳ͍
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ͦ͏ͩ...Tupleͩʂʂ
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No content
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ے 2ͭ
@Getter
public class Pair {
private final F first;
private final S second;
private Pair(F first, S second) {
this.first = first;
this.second = second;
}
public static Pair create(F first, S second) {
return new Pair<>(first, second);
}
}
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ے 3ͭ
@Getter
public class Triplet {
private final F first;
private final S second;
private final T thread;
private Triplet(F first, S second, T thread) {
this.first = first;
this.second = second;
this.thread = thread;
}
public static Triplet create(F first, S second, T
thread) {
return new Triplet<>(first, second, thread);
}
}
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ෳͷϦΫΤετΛ࡞Δ
// ϦΫΤετͱϨεϙϯεΛΫϥεͱͯ͠ఆٛ
// ϦΫΤετ : GetBanner Ϩεϙϯε : GetBanner
class GetBannerResponse {
String url;
}
// ϦΫΤετͷܕ͕ܾ·ΕϨεϙϯεͷܕ͕ܾ·Δ = RequestType<Ϩεϙϯεͷܕ>
class GetBanner extends RequestType {
@Override
public String getMethod() {
return "GetBanner";
}
@Override
protected Class getResponseType() {
return GetBannerResponse.class;
}
}
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ෳͷϦΫΤετΛ࡞Δ
// ಉ͡Α͏ʹผAPIͷϦΫΤετͱϨεϙϯεΛΫϥεͱͯ͠ఆٛ
// ϦΫΤετ : GetTimeline Ϩεϙϯε : GetTimelineResponse
class GetTimelineResponse {
List items;
}
class GetTimeline extends RequestType {
private final long timelineId;
GetTimeline(long timelineId) {
this.timelineId = timelineId;
}
@Override
public String getMethod() {
return "GetTimeline";
}
@Override
protected Class getResponseType() {
return GetTimelineResponse.class;
}
}
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࡞ͬͨϦΫΤετΛ·ͱΊͯAPIʹ͛Δ
GetTimeline getTimeline = new GetTimeline(1);
GetBanner getBanner = new GetBanner();
RxApiClient rxApiClient = new RxApiClient();
// Observable>
͕ฦͬͯ͘Δ
rxApiClient.responseFrom(getTimeline,getBanner)
....
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ϦΫΤετͷΫϥεJSONʹͳͬͯ
HTTP bodyʹઃఆ͞ΕΔ
[
{
"params": {
"timelineId": 1
},
"method": "GetTimeline",
"jsonrpc": "2.0",
"id": "1"
},
{
"params": {},
"method": "GetBanner",
"jsonrpc": "2.0",
"id": "2"
}
]
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ෳͷϨεϙϯε͕ฦͬͯ͘Δ +
ϋϯυϦϯάͯ͠ϨεϙϯεΛ௨͢Δ
// ෳͷϨεϙϯεTupleʹแΜͰRxʹྲྀ͢
// responseFromͰTupleʹแΉॲཧΛͯ͠Δ
rxApiClient.responseFrom(getTimeline, getBanner)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Action1>() {
@Override
public void call(Pair pair) {
// Tuple͔ΒϨεϙϯεΛऔΓग़͢
pair.getFirst(); // return GetTimelineResponse
pair.getSecond(); // retrun GetBannerResponse
}
});
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Thanks!