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main.go
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main.go
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package problem
import (
"context"
"net/http"
"github.com/stellar/go/support/context/requestid"
"github.com/stellar/go/support/render/problem"
)
// Inflate expands a problem with contextal information, including setting basic info.
// At present it adds the request's id as the problem's Instance, if available.
func Inflate(ctx context.Context, p *problem.P) {
problem.Inflate(p)
p.Instance = requestid.FromContext(ctx)
}
// Well-known and reused problems below:
var (
// RateLimitExceeded is a well-known problem type. Use it as a shortcut
// in your actions.
RateLimitExceeded = problem.P{
Type: "rate_limit_exceeded",
Title: "Rate limit exceeded",
Status: 429,
Detail: "The rate limit for the requesting IP address is over its alloted " +
"limit. The allowed limit and requests left per time period are " +
"communicated to clients via the http response headers 'X-RateLimit-*' " +
"headers.",
}
// NotImplemented is a well-known problem type. Use it as a shortcut
// in your actions.
NotImplemented = problem.P{
Type: "not_implemented",
Title: "Resource Not Yet Implemented",
Status: http.StatusNotFound,
Detail: "While the requested URL is expected to eventually point to a " +
"valid resource, the work to implement the resource has not yet " +
"been completed.",
}
// NotAcceptable is a well-known problem type. Use it as a shortcut
// in your actions.
NotAcceptable = problem.P{
Type: "not_acceptable",
Title: "An acceptable response content-type could not be provided for " +
"this request",
Status: http.StatusNotAcceptable,
}
// ServerOverCapacity is a well-known problem type. Use it as a shortcut
// in your actions.
ServerOverCapacity = problem.P{
Type: "server_over_capacity",
Title: "Server Over Capacity",
Status: http.StatusServiceUnavailable,
Detail: "This horizon server is currently overloaded. Please wait for " +
"several minutes before trying your request again.",
}
// Timeout is a well-known problem type. Use it as a shortcut
// in your actions.
Timeout = problem.P{
Type: "timeout",
Title: "Timeout",
Status: http.StatusGatewayTimeout,
Detail: "Your request timed out before completing. Please try your " +
"request again. If you are submitting a transaction make sure you are " +
"sending exactly the same transaction (with the same sequence number).",
}
// UnsupportedMediaType is a well-known problem type. Use it as a shortcut
// in your actions.
UnsupportedMediaType = problem.P{
Type: "unsupported_media_type",
Title: "Unsupported Media Type",
Status: http.StatusUnsupportedMediaType,
Detail: "The request has an unsupported content type. Presently, the " +
"only supported content type is application/x-www-form-urlencoded.",
}
// BeforeHistory is a well-known problem type. Use it as a shortcut
// in your actions.
BeforeHistory = problem.P{
Type: "before_history",
Title: "Data Requested Is Before Recorded History",
Status: http.StatusGone,
Detail: "This horizon instance is configured to only track a " +
"portion of the stellar network's latest history. This request " +
"is asking for results prior to the recorded history known to " +
"this horizon instance.",
}
// StaleHistory is a well-known problem type. Use it as a shortcut
// in your actions.
StaleHistory = problem.P{
Type: "stale_history",
Title: "Historical DB Is Too Stale",
Status: http.StatusServiceUnavailable,
Detail: "This horizon instance is configured to reject client requests " +
"when it can determine that the history database is lagging too far " +
"behind the connected instance of stellar-core. If you operate this " +
"server, please ensure that the ingestion system is properly running.",
}
)