Rene Nochebuena
caa397591e
Introduces code.nochebuena.dev/einherjar/httpclient — the outbound HTTP client starter for the Einherjar framework. Absorbs the httpclient package from micro-lib, replacing fmt.Errorf wrapping with core/xerrors and adding generic JSON helpers. Interfaces: - Provider — Do(req *http.Request) (*http.Response, error) Implementation: - New(logger, cfg) Provider — configures net.Dialer + retry + circuit breaker - NewWithDefaults(logger) Provider — convenience constructor with default config - Retry: avast/retry-go; configurable MaxRetries and RetryDelay; retries on network errors and 5xx responses; logs each retry attempt at Warn level - Circuit breaker: sony/gobreaker; opens after CBThreshold consecutive failures within CBTimeout window; returns ErrUnavailable when open - DoJSON[T](ctx, client, req) (*T, error) — executes request, decodes JSON body - DoJSONRequest[Req, Resp](ctx, client, method, rawURL, body) (*Resp, error) — marshals body, builds request, executes, decodes response - MapStatusToError(code, msg) error — maps HTTP status codes to xerrors values Config (EINHERJAR_HTTP_* env vars): Name(http), Timeout(30s), DialTimeout(5s), MaxRetries(3), RetryDelay(1s), CBThreshold(10), CBTimeout(1m) - identifiable.go: package-level Module variable (observability.Identifiable) for version identification — httpclient is a stateless provider; not registered with the launcher
29 lines
1.0 KiB
Go
29 lines
1.0 KiB
Go
package httpclient
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import "time"
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// Config holds configuration for the HTTP client.
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type Config struct {
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// Name identifies this client in logs and circuit breaker metrics.
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Name string `env:"EINHERJAR_HTTP_CLIENT_NAME" envDefault:"http"`
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Timeout time.Duration `env:"EINHERJAR_HTTP_TIMEOUT" envDefault:"30s"`
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DialTimeout time.Duration `env:"EINHERJAR_HTTP_DIAL_TIMEOUT" envDefault:"5s"`
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MaxRetries uint `env:"EINHERJAR_HTTP_MAX_RETRIES" envDefault:"3"`
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RetryDelay time.Duration `env:"EINHERJAR_HTTP_RETRY_DELAY" envDefault:"1s"`
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CBThreshold uint32 `env:"EINHERJAR_HTTP_CB_THRESHOLD" envDefault:"10"`
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CBTimeout time.Duration `env:"EINHERJAR_HTTP_CB_TIMEOUT" envDefault:"1m"`
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}
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// DefaultConfig returns a Config with sensible production defaults.
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func DefaultConfig() Config {
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return Config{
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Name: "http",
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Timeout: 30 * time.Second,
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DialTimeout: 5 * time.Second,
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MaxRetries: 3,
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RetryDelay: 1 * time.Second,
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CBThreshold: 10,
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CBTimeout: 1 * time.Minute,
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}
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}
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