get() — spring-boot Function Reference

Architecture documentation for the get() function in CredentialHelper.java from the spring-boot codebase.

Function java BuildpackPlatform DockerTransport calls 4 called by 1

Entity Profile

BuildpackPlatform→ DockerTransport→ get() — spring-boot Function Reference

Dependency Diagram

graph TD
  ea7dd240_64b2_516a_7f44_d256146da8e4["get()"]
  33361459_d9b3_4592_0ecf_ac24ca2f8da3["start()"]
  33361459_d9b3_4592_0ecf_ac24ca2f8da3 -->|calls| ea7dd240_64b2_516a_7f44_d256146da8e4
  58994152_b05e_a16f_283c_b6dc2c064895["get()"]
  ea7dd240_64b2_516a_7f44_d256146da8e4 -->|calls| 58994152_b05e_a16f_283c_b6dc2c064895
  33162b7b_807b_4420_6f22_261dc4902526["processBuilder()"]
  ea7dd240_64b2_516a_7f44_d256146da8e4 -->|calls| 33162b7b_807b_4420_6f22_261dc4902526
  33361459_d9b3_4592_0ecf_ac24ca2f8da3["start()"]
  ea7dd240_64b2_516a_7f44_d256146da8e4 -->|calls| 33361459_d9b3_4592_0ecf_ac24ca2f8da3
  a61dd912_52fc_910c_8319_e8a1fabcf9c1["isCredentialsNotFoundError()"]
  ea7dd240_64b2_516a_7f44_d256146da8e4 -->|calls| a61dd912_52fc_910c_8319_e8a1fabcf9c1
  style ea7dd240_64b2_516a_7f44_d256146da8e4 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

buildpack/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/docker/configuration/CredentialHelper.java lines 53–76

	@Nullable Credential get(String serverUrl) throws IOException {
		ProcessBuilder processBuilder = processBuilder("get");
		Process process = start(processBuilder);
		try (OutputStream request = process.getOutputStream()) {
			request.write(serverUrl.getBytes(StandardCharsets.UTF_8));
		}
		try {
			int exitCode = process.waitFor();
			try (InputStream response = process.getInputStream()) {
				if (exitCode == 0) {
					return new Credential(SharedJsonMapper.get().readTree(response));
				}
				String errorMessage = new String(response.readAllBytes(), StandardCharsets.UTF_8);
				if (!isCredentialsNotFoundError(errorMessage)) {
					throw new IOException("%s' exited with code %d: %s".formatted(process, exitCode, errorMessage));
				}
				return null;
			}
		}
		catch (InterruptedException ex) {
			Thread.currentThread().interrupt();
			return null;
		}
	}