59 lines
1.8 KiB
Java
59 lines
1.8 KiB
Java
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package com.amazon.SellingPartnerAPIAA;
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import com.google.gson.Gson;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParser;
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import com.squareup.okhttp.MediaType;
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import com.squareup.okhttp.OkHttpClient;
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import com.squareup.okhttp.Request;
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import com.squareup.okhttp.RequestBody;
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import com.squareup.okhttp.Response;
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import lombok.AccessLevel;
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import lombok.Getter;
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import lombok.Setter;
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import java.io.IOException;
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class LWAClient {
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private static final String ACCESS_TOKEN_KEY = "access_token";
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private static final MediaType JSON_MEDIA_TYPE = MediaType.parse("application/json; charset=utf-8");
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@Getter
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private String endpoint;
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@Setter(AccessLevel.PACKAGE)
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private OkHttpClient okHttpClient;
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LWAClient(String endpoint) {
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okHttpClient = new OkHttpClient();
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this.endpoint = endpoint;
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}
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String getAccessToken(LWAAccessTokenRequestMeta lwaAccessTokenRequestMeta) {
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RequestBody requestBody = RequestBody.create(JSON_MEDIA_TYPE,
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new Gson().toJson(lwaAccessTokenRequestMeta));
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Request accessTokenRequest = new Request.Builder()
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.url(endpoint)
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.post(requestBody)
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.build();
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String accessToken;
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try {
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Response response = okHttpClient.newCall(accessTokenRequest).execute();
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if (!response.isSuccessful()) {
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throw new IOException("Unsuccessful LWA token exchange");
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}
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JsonObject responseJson = new JsonParser()
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.parse(response.body().string())
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.getAsJsonObject();
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accessToken = responseJson.get(ACCESS_TOKEN_KEY).getAsString();
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} catch (Exception e) {
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throw new RuntimeException("Error getting LWA Access Token", e);
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}
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return accessToken;
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}
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}
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